Next Clinic — API

Paste the build surface, get a structured Next.js build review.

API tokens Open the app

Review your Next.js build surface from your own scripts

Send the build surface — next.config, package.json, the output of next build, and any route, layout or component source, each file preceded by a // file: next.config.ts comment — and get back one JSON object: a build posture, the inventory of every config, script, route, dependency and component with its role, prioritized findings across compatibility, dev speed, bundle size, correctness, caching and hygiene, each with a corrected fragment, the ordered migration and tuning plan, quick wins, and the focus areas to work through first. Everything this app does goes through the SkillSafe App API — plain JSON over HTTPS — so you can hang a review off any pull request that touches next.config.ts or the dev scripts. Wire it into whatever builds your app: a pre-merge check, a scheduled build-weight audit, or an editor command. Pick a language once and the whole page follows.

Basics

Base URL: https://api.skillsafe.ai/v1/app-api, app slug next-clinic. Every request sends Authorization: Bearer <token> and JSON bodies with Content-Type: application/json. Responses are wrapped in an envelope: {"data": …} on success, {"error": {"code", "message"}} on failure. The review itself is produced by the gpt-terra model. Estimates are free; runs are metered against your credit balance. There is a single run task — one bundle of project files in, one review out, no follow-up calls and no session state to carry.

StatusMeaning
401Missing or expired token — create a new session.
402Not enough credits — top up at skillsafe.ai/account/credits.
403The token isn't allowed to do this (e.g. a guest reviewing a very large paste).
404Unknown job or record id.
5xxTransient platform error — retry with backoff.

Browsers enforce CORS for this API, so run these examples from a server, script or terminal — not from another website's frontend.

Step 0 — A tiny client

Every task below is a single HTTP call, so start with a short helper that adds the auth header, sends JSON and unwraps the data envelope. The later steps reuse it.

export API="https://api.skillsafe.ai/v1/app-api"
export TOKEN="YOUR_TOKEN"      # see step 1

# every call looks like:
#   curl -s "$API/..." -H "Authorization: Bearer $TOKEN" [-d '{json}']
# jq is used below to pull fields out of the {"data": ...} envelope
import json, requests

API = "https://api.skillsafe.ai/v1/app-api"
TOKEN = "YOUR_TOKEN"  # see step 1 — read it from your shell environment in real code

def api(method, path, body=None, **headers):
    res = requests.request(method, API + path, json=body,
                           headers={"Authorization": f"Bearer {TOKEN}", **headers})
    payload = res.json()
    if not res.ok:
        raise RuntimeError(payload.get("error", {}).get("message", res.reason))
    return payload["data"]
// Node 18+ (built-in fetch)
const API = "https://api.skillsafe.ai/v1/app-api";
const TOKEN = "YOUR_TOKEN"; // see step 1 — read it from your shell environment in real code

async function api(method, path, body, extraHeaders = {}) {
  const res = await fetch(API + path, {
    method,
    headers: { Authorization: `Bearer ${TOKEN}`, "Content-Type": "application/json", ...extraHeaders },
    body: body === undefined ? undefined : JSON.stringify(body),
  });
  const json = await res.json();
  if (!res.ok) throw new Error(json.error?.message ?? res.statusText);
  return json.data;
}
package main

import (
	"bytes"
	"encoding/json"
	"fmt"
	"net/http"
	"os"
)

const API = "https://api.skillsafe.ai/v1/app-api"

var token = os.Getenv("SKILLSAFE_TOKEN") // see step 1

func call(method, path string, body, out any) error {
	var buf bytes.Buffer
	if body != nil {
		json.NewEncoder(&buf).Encode(body)
	}
	req, _ := http.NewRequest(method, API+path, &buf)
	req.Header.Set("Authorization", "Bearer "+token)
	req.Header.Set("Content-Type", "application/json")
	res, err := http.DefaultClient.Do(req)
	if err != nil {
		return err
	}
	defer res.Body.Close()
	var env struct {
		Data  json.RawMessage `json:"data"`
		Error *struct{ Message string `json:"message"` } `json:"error"`
	}
	json.NewDecoder(res.Body).Decode(&env)
	if res.StatusCode >= 400 {
		return fmt.Errorf("api %s %s: %s", method, path, env.Error.Message)
	}
	if out == nil {
		return nil
	}
	return json.Unmarshal(env.Data, out)
}
// Java 17+, no dependencies. Pair with your JSON library (Jackson, Gson…)
// to read fields out of the returned envelope.
import java.net.URI;
import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;

public class SkillSafe {
    static final String API = "https://api.skillsafe.ai/v1/app-api";
    static final String TOKEN = System.getenv("SKILLSAFE_TOKEN"); // see step 1
    static final HttpClient HTTP = HttpClient.newHttpClient();

    static String api(String method, String path, String jsonBody) throws Exception {
        var req = HttpRequest.newBuilder(URI.create(API + path))
            .header("Authorization", "Bearer " + TOKEN)
            .header("Content-Type", "application/json")
            .method(method, jsonBody == null
                ? HttpRequest.BodyPublishers.noBody()
                : HttpRequest.BodyPublishers.ofString(jsonBody))
            .build();
        var res = HTTP.send(req, HttpResponse.BodyHandlers.ofString());
        if (res.statusCode() >= 400) throw new RuntimeException(res.body());
        return res.body(); // envelope: {"data": …}
    }
}
require "net/http"
require "json"

API = "https://api.skillsafe.ai/v1/app-api"
TOKEN = ENV.fetch("SKILLSAFE_TOKEN") # see step 1

def api(method, path, body = nil)
  uri = URI(API + path)
  req = Net::HTTP.const_get(method.capitalize).new(uri)
  req["Authorization"] = "Bearer #{TOKEN}"
  req["Content-Type"] = "application/json"
  req.body = body.to_json if body
  res = Net::HTTP.start(uri.host, uri.port, use_ssl: true) { |h| h.request(req) }
  payload = JSON.parse(res.body)
  raise (payload.dig("error", "message") || res.message) unless res.is_a?(Net::HTTPSuccess)
  payload["data"]
end
<?php
const API = "https://api.skillsafe.ai/v1/app-api";
$TOKEN = getenv("SKILLSAFE_TOKEN"); // see step 1

function api(string $method, string $path, ?array $body = null): mixed {
    global $TOKEN;
    $ch = curl_init(API . $path);
    curl_setopt_array($ch, [
        CURLOPT_CUSTOMREQUEST  => $method,
        CURLOPT_RETURNTRANSFER => true,
        CURLOPT_HTTPHEADER     => [
            "Authorization: Bearer $TOKEN",
            "Content-Type: application/json",
        ],
        CURLOPT_POSTFIELDS     => $body === null ? null : json_encode($body),
    ]);
    $payload = json_decode(curl_exec($ch), true);
    $status  = curl_getinfo($ch, CURLINFO_RESPONSE_CODE);
    curl_close($ch);
    if ($status >= 400) {
        throw new Exception($payload["error"]["message"] ?? "HTTP $status");
    }
    return $payload["data"];
}
// .NET 8+
using System.Net.Http.Json;
using System.Text.Json;

static class SkillSafe
{
    const string Api = "https://api.skillsafe.ai/v1/app-api";
    static readonly HttpClient Http = new();

    static SkillSafe() =>
        Http.DefaultRequestHeaders.Authorization =
            new("Bearer", Environment.GetEnvironmentVariable("SKILLSAFE_TOKEN")); // see step 1

    public static async Task<JsonElement> ApiAsync(HttpMethod method, string path, object? body = null)
    {
        var req = new HttpRequestMessage(method, Api + path);
        if (body != null) req.Content = JsonContent.Create(body);
        var res = await Http.SendAsync(req);
        var json = await res.Content.ReadFromJsonAsync<JsonElement>();
        if (!res.IsSuccessStatusCode)
            throw new Exception(json.GetProperty("error").GetProperty("message").GetString());
        return json.GetProperty("data");
    }
}

Step 1 — Get a token

POST /guest

A guest token lets you check balances and estimate costs for free. For metered review runs billed to your own account, use your personal token: open the token page, sign in with SkillSafe, and press Copy shell export — it puts export SKILLSAFE_TOKEN="…" on your clipboard, which every example below reads. Treat the token like a password: it can spend your credits. For fully headless scripts, POST /guest mints a guest token with no browser involved.

curl -s -X POST "$API/guest" \
  -H "Content-Type: application/json" \
  -d '{"slug":"next-clinic"}' | jq -r '.data.token'
token = api("POST", "/guest", {"slug": "next-clinic"})["token"]
const { token } = await api("POST", "/guest", { slug: "next-clinic" });
var guest struct{ Token string `json:"token"` }
err := call("POST", "/guest", map[string]string{"slug": "next-clinic"}, &guest)
String envelope = api("POST", "/guest", """
    {"slug":"next-clinic"}""");
// token is at data.token in the returned JSON
token = api("POST", "/guest", { slug: "next-clinic" })["token"]
$token = api("POST", "/guest", ["slug" => "next-clinic"])["token"];
var guest = await SkillSafe.ApiAsync(HttpMethod.Post, "/guest",
    new { slug = "next-clinic" });
var token = guest.GetProperty("token").GetString();

The app stores this browser's token under the localStorage key skillsafe_app_token:next-clinic, on the app's own origin. The token page reads and manages it for you — you never need to open developer tools.

Step 2 — Check who you are and your balance

GET /me

Returns subject_type ("user" or "guest"), subject_id and your credits balance. Check this before reviewing a large paste.

curl -s "$API/me" -H "Authorization: Bearer $TOKEN" | jq '.data'
me = api("GET", "/me")
print(me["subject_type"], me["credits"])
const me = await api("GET", "/me");
console.log(me.subject_type, me.credits);
var me struct {
	SubjectType string `json:"subject_type"`
	Credits     int64  `json:"credits"`
}
err := call("GET", "/me", nil, &me)
String envelope = api("GET", "/me", null);
// data.subject_type, data.credits
me = api("GET", "/me")
puts "#{me["subject_type"]}: #{me["credits"]} credits"
$me = api("GET", "/me");
echo "{$me['subject_type']}: {$me['credits']} credits\n";
var me = await SkillSafe.ApiAsync(HttpMethod.Get, "/me");
Console.WriteLine($"{me.GetProperty("subject_type")}: {me.GetProperty("credits")} credits");

Step 3 — Estimate the cost

POST /estimate

Send exactly the input you would send to /run; the response's hold_credits is the worst-case cost. Nothing is charged and no job is created, so estimating is free — useful when you are piping a whole build log plus every next.config in a monorepo and want a ceiling before spending credits.

Input fieldTypeNotes
sourcesstring, requiredThe pasted build surface: next.config.ts/.js/.mjs, package.json, the output of next build, tsconfig.json, and any route, layout or component source you want looked at. One file or several concatenated, each preceded by a // file: next.config.ts comment. This is the model's only evidence — nothing is installed, built or executed. Inputs longer than 100,000 characters are clipped middle-out, with a // [... clipped ...] comment showing where. At least 60 characters are needed for a review.
next_versionstring16 | 15 | 14-or-earlier | unknown — changes what is idiomatic and what is an error: on 16 Turbopack is the dev default and a synchronously-read params throws; on 15 the same code only warns; on 14 and earlier Turbopack is opt-in and incomplete.
concernstringgeneral | dev-speed | build-size | migration | caching — the review emphasis. It weights the findings and the summary, but it is emphasis and not exclusivity: a high-severity finding from another category is never suppressed.
contextstring, optionalExtra context: monorepo layout and workspace packages, CI provider, deploy target, what next dev startup and hot updates actually measure today, what has already been tried, and any constraint you cannot move (a plugin you must keep, a pinned Node version). Clipped at 20,000 characters.
prescan_factsobject, optionalWhat a client-side scanner mechanically matched in the files: {"resources": [], "flags": []}. Each entry is {id, label}. Resource ids look like res:config/next.config.ts, res:script/dev, res:route//dashboard or res:dependency/next; flag ids are <check>:<name>custom-webpack:next.config.ts, force-webpack:dev, cache-wipe:dev, babel-config:.babelrc, legacy-next:15, removed-option:swcminify, heavy-route:/dashboard, heavy-shared:all, client-boundary:app/dashboard/page.tsx, sync-dynamic-api:params, barrel-import:lodash, public-secret:next-public-api-secret, img-tag:app/page.tsx-42. Every flag id you send comes back in coverage_check. The web UI fills this from its own prescan; API callers may omit the field entirely (then coverage_check simply comes back empty) or send the two empty arrays.
retry_notestring, optionalOnly set by the app's automatic reformat retry when a first reply was not valid JSON. Leave it out.
cat > sources.txt <<'FILES'
// file: next.config.ts
import type { NextConfig } from "next";

const nextConfig: NextConfig = {
  swcMinify: true,
  webpack(config) {
    config.module.rules.push({ test: /\.svg$/, use: ["@svgr/webpack"] });
    return config;
  },
};
export default nextConfig;

// file: package.json
{
  "scripts": {
    "dev": "rm -rf .next && next dev --webpack",
    "build": "next build"
  },
  "dependencies": { "next": "16.0.1", "react": "19.0.0" }
}
FILES

jq -n --rawfile sources sources.txt \
  '{sources: $sources,
    next_version: "16",
    concern: "migration",
    context: "pnpm monorepo, deploys to Vercel; next dev takes about 14s to first paint.",
    prescan_facts: {resources: [], flags: []}}' > input.json

curl -s -X POST "$API/estimate" \
  -H "Authorization: Bearer $TOKEN" -H "Content-Type: application/json" \
  -d @input.json | jq '.data.hold_credits'
SOURCES = r"""// file: next.config.ts
import type { NextConfig } from "next";

const nextConfig: NextConfig = {
  swcMinify: true,
  webpack(config) {
    config.module.rules.push({ test: /\.svg$/, use: ["@svgr/webpack"] });
    return config;
  },
};
export default nextConfig;

// file: package.json
{
  "scripts": {
    "dev": "rm -rf .next && next dev --webpack",
    "build": "next build"
  },
  "dependencies": { "next": "16.0.1", "react": "19.0.0" }
}
"""

payload = {
    "sources": SOURCES,
    "next_version": "16",
    "concern": "migration",
    "context": "pnpm monorepo, deploys to Vercel; next dev takes about 14s to first paint.",
    "prescan_facts": {"resources": [], "flags": []},
}

est = api("POST", "/estimate", payload)
print("worst case:", est.get("hold_credits", est.get("credits")), "credits")
// String.raw keeps the backslash in the SVG rule's regex intact
const sources = String.raw`// file: next.config.ts
import type { NextConfig } from "next";

const nextConfig: NextConfig = {
  swcMinify: true,
  webpack(config) {
    config.module.rules.push({ test: /\.svg$/, use: ["@svgr/webpack"] });
    return config;
  },
};
export default nextConfig;

// file: package.json
{
  "scripts": {
    "dev": "rm -rf .next && next dev --webpack",
    "build": "next build"
  },
  "dependencies": { "next": "16.0.1", "react": "19.0.0" }
}
`;

const payload = {
  sources,
  next_version: "16",
  concern: "migration",
  context: "pnpm monorepo, deploys to Vercel; next dev takes about 14s to first paint.",
  prescan_facts: { resources: [], flags: [] },
};

const est = await api("POST", "/estimate", payload);
console.log("worst case:", est.hold_credits ?? est.credits, "credits");
const sources = `// file: next.config.ts
import type { NextConfig } from "next";

const nextConfig: NextConfig = {
  swcMinify: true,
  webpack(config) {
    config.module.rules.push({ test: /\.svg$/, use: ["@svgr/webpack"] });
    return config;
  },
};
export default nextConfig;

// file: package.json
{
  "scripts": {
    "dev": "rm -rf .next && next dev --webpack",
    "build": "next build"
  },
  "dependencies": { "next": "16.0.1", "react": "19.0.0" }
}
`

payload := map[string]any{
	"sources":      sources,
	"next_version": "16",
	"concern":      "migration",
	"context":      "pnpm monorepo, deploys to Vercel; next dev takes about 14s to first paint.",
	"prescan_facts": map[string]any{
		"resources": []any{}, "flags": []any{},
	},
}

var est struct{ HoldCredits int64 `json:"hold_credits"` }
err := call("POST", "/estimate", payload, &est)
// In a text block \\. produces the single backslash the regex needs.
String sources = """
    // file: next.config.ts
    import type { NextConfig } from "next";

    const nextConfig: NextConfig = {
      swcMinify: true,
      webpack(config) {
        config.module.rules.push({ test: /\\.svg$/, use: ["@svgr/webpack"] });
        return config;
      },
    };
    export default nextConfig;

    // file: package.json
    {
      "scripts": {
        "dev": "rm -rf .next && next dev --webpack",
        "build": "next build"
      },
      "dependencies": { "next": "16.0.1", "react": "19.0.0" }
    }
    """;

String jsonPayload = """
    {"sources": %s,
     "next_version": "16",
     "concern": "migration",
     "context": "pnpm monorepo, deploys to Vercel; next dev takes about 14s to first paint.",
     "prescan_facts": {"resources": [], "flags": []}}
    """.formatted(toJsonString(sources));

String envelope = api("POST", "/estimate", jsonPayload);
// worst-case cost is at data.hold_credits
# the single-quoted heredoc keeps \. literal
SOURCES = <<~'FILES'
  // file: next.config.ts
  import type { NextConfig } from "next";

  const nextConfig: NextConfig = {
    swcMinify: true,
    webpack(config) {
      config.module.rules.push({ test: /\.svg$/, use: ["@svgr/webpack"] });
      return config;
    },
  };
  export default nextConfig;

  // file: package.json
  {
    "scripts": {
      "dev": "rm -rf .next && next dev --webpack",
      "build": "next build"
    },
    "dependencies": { "next": "16.0.1", "react": "19.0.0" }
  }
FILES

payload = { sources: SOURCES,
            next_version: "16",
            concern: "migration",
            context: "pnpm monorepo, deploys to Vercel; next dev takes about 14s to first paint.",
            prescan_facts: { resources: [], flags: [] } }

est = api("POST", "/estimate", payload)
puts "worst case: #{est["hold_credits"] || est["credits"]} credits"
$sources = <<<'FILES'
// file: next.config.ts
import type { NextConfig } from "next";

const nextConfig: NextConfig = {
  swcMinify: true,
  webpack(config) {
    config.module.rules.push({ test: /\.svg$/, use: ["@svgr/webpack"] });
    return config;
  },
};
export default nextConfig;

// file: package.json
{
  "scripts": {
    "dev": "rm -rf .next && next dev --webpack",
    "build": "next build"
  },
  "dependencies": { "next": "16.0.1", "react": "19.0.0" }
}
FILES;

$payload = [
    "sources"       => $sources,
    "next_version"  => "16",
    "concern"       => "migration",
    "context"       => "pnpm monorepo, deploys to Vercel; next dev takes about 14s to first paint.",
    "prescan_facts" => ["resources" => [], "flags" => []],
];

$est = api("POST", "/estimate", $payload);
echo "worst case: " . ($est["hold_credits"] ?? $est["credits"]) . " credits\n";
// a raw string literal keeps the backslash in /\.svg$/ as written
var sources = """
    // file: next.config.ts
    import type { NextConfig } from "next";

    const nextConfig: NextConfig = {
      swcMinify: true,
      webpack(config) {
        config.module.rules.push({ test: /\.svg$/, use: ["@svgr/webpack"] });
        return config;
      },
    };
    export default nextConfig;

    // file: package.json
    {
      "scripts": {
        "dev": "rm -rf .next && next dev --webpack",
        "build": "next build"
      },
      "dependencies": { "next": "16.0.1", "react": "19.0.0" }
    }
    """;

var payload = new {
    sources,
    next_version = "16",
    concern = "migration",
    context = "pnpm monorepo, deploys to Vercel; next dev takes about 14s to first paint.",
    prescan_facts = new {
        resources = Array.Empty<object>(), flags = Array.Empty<object>(),
    },
};

var est = await SkillSafe.ApiAsync(HttpMethod.Post, "/estimate", payload);
Console.WriteLine($"worst case: {est.GetProperty("hold_credits")} credits");

prescan_facts.flags is how you make the review answer for things you already know about. Send {"resources": [{"id": "res:script/dev", "label": "Script/dev"}], "flags": [{"id": "force-webpack:dev", "label": "the dev script passes --webpack"}]} and every flag id comes back in coverage_check — addressed by a finding, or set aside with the reason. Nothing you flag is silently dropped, which makes it the field to assert on in a CI check. Omit the field and coverage_check comes back empty; the rest of the review is unaffected.

Step 4 — Run the review and wait for the result

POST /run
GET /jobs/{job_id}

/run takes the same input as /estimate, places a credit hold and returns a job_id. Poll /jobs/{job_id} every 1–2 seconds until status is succeeded or failed (a run typically takes 30–90 s, since every finding carries a corrected config or code fragment and the plan is ordered afterwards). Always send an Idempotency-Key header so a network retry can't start a second, double-charged run. The review is in output — usually nested as output.output, and as a JSON string, so parse defensively. The samples below print the posture, the inventory, the prioritized findings and the ordered plan, then save the whole object to review.json.

JOB_ID=$(curl -s -X POST "$API/run" \
  -H "Authorization: Bearer $TOKEN" -H "Content-Type: application/json" \
  -H "Idempotency-Key: nc-$(date +%s)" \
  -d @input.json | jq -r '.data.job_id')

while :; do
  JOB=$(curl -s "$API/jobs/$JOB_ID" -H "Authorization: Bearer $TOKEN")
  STATUS=$(echo "$JOB" | jq -r '.data.status')
  [ "$STATUS" = "succeeded" ] || [ "$STATUS" = "failed" ] && break
  sleep 2
done

# unwrap the review once, then read it
echo "$JOB" | jq -r '.data.output.output' > review.json

jq -r '
  "\(.review_name) [\(.posture)]: \(.verdict)",
  "",
  "INVENTORY",
  (.inventory[] | "  \(.kind)/\(.name) in \(.scope) - \(.role)"),
  "",
  "FINDINGS",
  (.findings[] | "  [\(.priority)] \(.id) \(.category) \(.resource): \(.problem)"),
  "",
  "PLAN",
  (.migration_steps[] | "  \(.step) - \(.action) [\(.command)]"),
  "",
  "QUICK WINS",
  (.quick_wins[] | "  - \(.)"),
  "",
  "FOCUS AREAS",
  (.focus_areas[] | "  \(.area) - \(.why)"),
  "",
  "COVERAGE",
  (.coverage_check[] | "  \(.id): \(if .addressed then "ok" else "SET ASIDE" end) - \(.note)")' \
  review.json

# fail the pipeline on anything critical
jq -e '[.findings[] | select(.priority == "critical")] | length == 0' review.json > /dev/null \
  || { echo "critical findings present"; exit 1; }
import time

job_id = api("POST", "/run", payload,
             **{"Idempotency-Key": "nc-001"})["job_id"]

while True:
    job = api("GET", f"/jobs/{job_id}")
    if job["status"] in ("succeeded", "failed"):
        break
    time.sleep(1.5)

if job["status"] == "failed":
    raise RuntimeError(job.get("error", "run failed"))

raw = job["output"]
if isinstance(raw, dict) and "output" in raw:
    raw = raw["output"]
review = json.loads(raw) if isinstance(raw, str) else raw

print(f'{review["review_name"]} [{review["posture"]}]: {review["verdict"]}')
for r in review["inventory"]:
    print(f'  {r["kind"]}/{r["name"]:<24} in={r["scope"] or "-":<20} {r["role"]}')
for f in review["findings"]:
    print(f'  [{f["priority"]:>8}] {f["id"]} {f["category"]} {f["resource"]}')
    print(f'      L:{f["likelihood"]}/S:{f["severity"]} {f["problem"]}')
    print(f'      fix: {f["fix"]}')
    if f["snippet"]:
        print("      snippet:", f["snippet"].splitlines()[0], "...")
for i, s in enumerate(review["migration_steps"], 1):
    print(f'  {i}. {s["step"]} - {s["action"]}')
    if s["command"]:
        print(f'     $ {s["command"]}')
for w in review["quick_wins"]:
    print("  win:", w)
for a in review["focus_areas"]:
    print(f'  focus {a["area"]} {a["finding_ids"]} - {a["why"]}')
for c in review["coverage_check"]:
    print(f'  {c["id"]}: {"ok" if c["addressed"] else "SET ASIDE"} - {c["note"]}')

with open("review.json", "w", encoding="utf-8") as fh:
    json.dump(review, fh, indent=2)

critical = [f for f in review["findings"] if f["priority"] == "critical"]
if critical:
    raise SystemExit(f"{len(critical)} critical finding(s)")
import { writeFileSync } from "node:fs";

const { job_id } = await api("POST", "/run", payload,
  { "Idempotency-Key": crypto.randomUUID() });

let job;
do {
  await new Promise((r) => setTimeout(r, 1500));
  job = await api("GET", `/jobs/${job_id}`);
} while (job.status !== "succeeded" && job.status !== "failed");

if (job.status === "failed") throw new Error(job.error ?? "run failed");

const raw = job.output?.output ?? job.output;
const review = typeof raw === "string" ? JSON.parse(raw) : raw;

console.log(`${review.review_name} [${review.posture}]: ${review.verdict}`);
for (const r of review.inventory) {
  console.log(`  ${r.kind}/${r.name} (${r.scope || "-"}): ${r.role}`);
}
for (const f of review.findings) {
  console.log(`  [${f.priority}] ${f.id} ${f.category} ${f.resource}`);
  console.log(`      L:${f.likelihood}/S:${f.severity} - ${f.fix}`);
}
review.migration_steps.forEach((s, i) => {
  console.log(`  ${i + 1}. ${s.step} - ${s.action}${s.command ? `\n     $ ${s.command}` : ""}`);
});
for (const w of review.quick_wins) console.log(`  win: ${w}`);
for (const a of review.focus_areas) {
  console.log(`  focus ${a.area} (${a.finding_ids.join(", ")}): ${a.why}`);
}
for (const c of review.coverage_check) {
  console.log(`  ${c.id}: ${c.addressed ? "ok" : "SET ASIDE"} - ${c.note}`);
}

writeFileSync("review.json", JSON.stringify(review, null, 2));

const critical = review.findings.filter((f) => f.priority === "critical");
if (critical.length) process.exitCode = 1;
var started struct{ JobID string `json:"job_id"` }
if err := call("POST", "/run", payload, &started); err != nil {
	log.Fatal(err)
}

var job struct {
	Status string          `json:"status"`
	Error  string          `json:"error"`
	Output json.RawMessage `json:"output"`
}
for {
	if err := call("GET", "/jobs/"+started.JobID, nil, &job); err != nil {
		log.Fatal(err)
	}
	if job.Status == "succeeded" || job.Status == "failed" {
		break
	}
	time.Sleep(1500 * time.Millisecond)
}

// job.Output is {"output": "<json string>"} — unwrap, then unmarshal:
type Review struct {
	ReviewName  string `json:"review_name"`
	Posture     string `json:"posture"`
	Verdict     string `json:"verdict"`
	ExecSummary string `json:"exec_summary"`
	Assumptions   []string `json:"assumptions"`
	OpenQuestions []string `json:"open_questions"`
	Inventory []struct {
		Kind, Name, Scope, Role string
	} `json:"inventory"`
	Findings []struct {
		ID, Category, Severity, Likelihood, Priority string
		Resource, Problem, Impact, Fix, Snippet      string
	} `json:"findings"`
	MigrationSteps []struct {
		Step, Action, Why, Command string
	} `json:"migration_steps"`
	CoverageCheck []struct {
		ID, Note  string
		Addressed bool
	} `json:"coverage_check"`
	QuickWins  []string `json:"quick_wins"`
	FocusAreas []struct {
		Area, Why  string
		FindingIDs []string `json:"finding_ids"`
	} `json:"focus_areas"`
	Summary string `json:"summary"`
}
var wrapper struct{ Output string `json:"output"` }
json.Unmarshal(job.Output, &wrapper)
var review Review
json.Unmarshal([]byte(wrapper.Output), &review)

fmt.Printf("%s [%s]: %s\n", review.ReviewName, review.Posture, review.Verdict)
for _, r := range review.Inventory {
	fmt.Printf("  %s/%s (%s): %s\n", r.Kind, r.Name, r.Scope, r.Role)
}
for _, f := range review.Findings {
	fmt.Printf("  [%s] %s %s %s: %s\n", f.Priority, f.ID, f.Category, f.Resource, f.Problem)
}
for i, s := range review.MigrationSteps {
	fmt.Printf("  %d. %s - %s [%s]\n", i+1, s.Step, s.Action, s.Command)
}
for _, a := range review.FocusAreas {
	fmt.Printf("  focus %s %v: %s\n", a.Area, a.FindingIDs, a.Why)
}
os.WriteFile("review.json", []byte(wrapper.Output), 0o644)
String envelope = api("POST", "/run", jsonPayload);
String jobId = /* data.job_id via your JSON library */;

while (true) {
    String job = api("GET", "/jobs/" + jobId, null);
    String status = /* data.status */;
    if (status.equals("succeeded") || status.equals("failed")) break;
    Thread.sleep(1500);
}
// The review is at data.output.output as a JSON string — parse it again, then read
// review_name, posture, verdict, exec_summary, assumptions[], open_questions[],
// inventory[] (kind/name/scope/role),
// findings[] (id/category/severity/likelihood/priority/resource/problem/impact/fix/snippet),
// migration_steps[] (step/action/why/command), coverage_check[] (id/addressed/note),
// quick_wins[], focus_areas[] (area/why/finding_ids[]) and summary.
// Finally keep the review on disk:
//   Files.writeString(Path.of("review.json"), reviewJson);
started = api("POST", "/run", payload)

job = nil
loop do
  job = api("GET", "/jobs/#{started["job_id"]}")
  break if %w[succeeded failed].include?(job["status"])
  sleep 1.5
end
raise (job["error"] || "run failed") if job["status"] == "failed"

raw = job["output"].is_a?(Hash) ? job["output"].fetch("output", job["output"]) : job["output"]
review = raw.is_a?(String) ? JSON.parse(raw) : raw

puts "#{review["review_name"]} [#{review["posture"]}]: #{review["verdict"]}"
review["inventory"].each { |r| puts "  #{r["kind"]}/#{r["name"]} (#{r["scope"]}): #{r["role"]}" }
review["findings"].each do |f|
  puts "  [#{f["priority"]}] #{f["id"]} #{f["category"]} #{f["resource"]}"
  puts "      L:#{f["likelihood"]}/S:#{f["severity"]} - #{f["fix"]}"
end
review["migration_steps"].each_with_index do |s, i|
  puts "  #{i + 1}. #{s["step"]} - #{s["action"]}"
  puts "     $ #{s["command"]}" unless s["command"].to_s.empty?
end
review["quick_wins"].each { |w| puts "  win: #{w}" }
review["focus_areas"].each { |a| puts "  focus #{a["area"]} #{a["finding_ids"].join(", ")}" }
review["coverage_check"].each { |c| puts "  #{c["id"]}: #{c["addressed"] ? "ok" : "SET ASIDE"}" }

File.write("review.json", JSON.pretty_generate(review))
exit 1 if review["findings"].any? { |f| f["priority"] == "critical" }
$started = api("POST", "/run", $payload);

do {
    sleep(2);
    $job = api("GET", "/jobs/" . $started["job_id"]);
} while (!in_array($job["status"], ["succeeded", "failed"]));

if ($job["status"] === "failed") {
    throw new Exception($job["error"] ?? "run failed");
}

$raw = is_array($job["output"]) ? ($job["output"]["output"] ?? $job["output"]) : $job["output"];
$review = is_string($raw) ? json_decode($raw, true) : $raw;

echo "{$review['review_name']} [{$review['posture']}]: {$review['verdict']}\n";
foreach ($review["inventory"] as $r) {
    echo "  {$r['kind']}/{$r['name']} ({$r['scope']}): {$r['role']}\n";
}
foreach ($review["findings"] as $f) {
    echo "  [{$f['priority']}] {$f['id']} {$f['category']} {$f['resource']}\n";
    echo "      L:{$f['likelihood']}/S:{$f['severity']} - {$f['fix']}\n";
}
foreach ($review["migration_steps"] as $i => $s) {
    echo "  " . ($i + 1) . ". {$s['step']} - {$s['action']}\n";
    if ($s["command"] !== "") { echo "     $ {$s['command']}\n"; }
}
foreach ($review["quick_wins"] as $w) {
    echo "  win: $w\n";
}
foreach ($review["focus_areas"] as $a) {
    echo "  focus {$a['area']}: " . implode(", ", $a["finding_ids"]) . "\n";
}
foreach ($review["coverage_check"] as $c) {
    echo "  {$c['id']}: " . ($c["addressed"] ? "ok" : "SET ASIDE") . "\n";
}

file_put_contents("review.json", json_encode($review, JSON_PRETTY_PRINT));
var started = await SkillSafe.ApiAsync(HttpMethod.Post, "/run", payload);
var jobId = started.GetProperty("job_id").GetString();

JsonElement job;
while (true)
{
    job = await SkillSafe.ApiAsync(HttpMethod.Get, $"/jobs/{jobId}");
    var status = job.GetProperty("status").GetString();
    if (status is "succeeded" or "failed") break;
    await Task.Delay(1500);
}

var rawText = job.GetProperty("output").GetProperty("output").GetString();
using var doc = JsonDocument.Parse(rawText!);
var review = doc.RootElement;

Console.WriteLine($"{review.GetProperty("review_name")} " +
                  $"[{review.GetProperty("posture")}]: {review.GetProperty("verdict")}");
foreach (var r in review.GetProperty("inventory").EnumerateArray())
{
    Console.WriteLine($"  {r.GetProperty("kind")}/{r.GetProperty("name")}: {r.GetProperty("role")}");
}
foreach (var f in review.GetProperty("findings").EnumerateArray())
{
    Console.WriteLine($"  [{f.GetProperty("priority")}] {f.GetProperty("id")} " +
                      $"{f.GetProperty("category")} {f.GetProperty("resource")} " +
                      $"(L:{f.GetProperty("likelihood")}/S:{f.GetProperty("severity")})");
}
foreach (var s in review.GetProperty("migration_steps").EnumerateArray())
{
    Console.WriteLine($"  {s.GetProperty("step")}: {s.GetProperty("action")} " +
                      $"[{s.GetProperty("command")}]");
}
foreach (var a in review.GetProperty("focus_areas").EnumerateArray())
{
    Console.WriteLine($"  focus {a.GetProperty("area")}: {a.GetProperty("why")}");
}

await File.WriteAllTextAsync("review.json", rawText!);

The model is asked for one JSON object and nothing else, but a stray code fence or preamble is always possible. Strip a leading ```json fence, take the text between the first { and the last }, and only then parse — that is what the app does before it falls back to a retry_note reformat run.

The review object — output schema

One JSON object, always the same shape. Every array is present, and the review is grounded in the pasted files alone: findings cite only configs, scripts, routes, dependencies and components that actually appear in sources, and something that is simply absent (no bundle analyzer, no transpilePackages for a workspace package that is clearly imported, no build output to judge weight by) is reported against the closest real construct or against (missing from the pasted files). Where the files are silent on something that changes the verdict you get an entry in assumptions and, if it would change the ranking, in open_questions. Expect five to fifteen findings on a typical project — a well-tuned one may honestly yield two or three, and findings is never empty.

FieldTypeMeaning
review_namestringA short title naming the project, taken from the files' own naming — e.g. storefront — Next.js build review.
posturestringturbopack-ready | tuning-recommended | migration-blocked. See the table below.
verdictstringOne sentence justifying the posture and naming the single most important change.
exec_summarystringTwo or three paragraphs, separated by blank lines, on the dominant themes across the build surface.
assumptionsstring[]Explicit assumptions filling gaps the files left open. Read these first — a wrong assumption invalidates the findings built on it.
open_questionsstring[]Questions whose answers would change the ranking.
inventoryarray{kind, name, scope, role} — every Config, Script, Route, Dependency, Component, Asset and Cache the review parsed out of the files and the part it plays. scope is the file it is defined in.
findingsarrayThe prioritized findings table — ids NC-001, NC-002, … in sequence, at least one entry. Columns are listed below.
migration_stepsarray{step, action, why, command} — the ordered path from where the project is to where the review says it should be, first step first, each independently doable. Two to eight steps. For a turbopack-ready project these are the next improvements, not migration chores.
coverage_checkarray{id, addressed, note} — one entry per prescan_facts.flags id you sent, each appearing exactly once. See the semantics below.
quick_winsstring[]One-line changes worth doing immediately, ahead of any planning. May be empty when nothing here is a one-liner.
focus_areasarray{area, why, finding_ids} — what to work through first, one sentence tied to the review, and the finding ids that motivate it. Every id in finding_ids exists in findings.
summarystringClosing paragraph: what to fix first, and what risk remains after that.

The three posture values:

postureWhat it means
turbopack-readyDev already runs on Turbopack: no custom webpack() block, no Babel config, config keys current for the declared version. Findings still exist, but they are improvements — shrinking the shared chunk, running the analyzer, caching .next in CI, pushing client boundaries down — not blockers. Genuinely well-tuned projects land here rather than having severity manufactured for them.
tuning-recommendedNothing blocks the default Turbopack dev path, but named costs should be addressed: a heavy shared chunk every route pays for, a barrel import pulling a whole library in, a .next cache thrown away on every CI run, a page-level "use client" that ships a whole subtree.
migration-blockedSomething in the project actively prevents the default Turbopack dev path or breaks on the declared Next.js version: a webpack loader Turbopack cannot run, a Babel config that disables SWC, a dev script pinned to --webpack, a request API read synchronously on 16. This is the posture to gate a pipeline on.

Each entry in findings:

ColumnMeaning
idSequential NC-001, NC-002, … — the stable handle referenced from focus_areas[].finding_ids.
categorycompatibility | dev-speed | bundle-size | correctness | caching | hygiene. Weighted by the concern you sent, but never restricted to it. Dev speed and bundle size are kept apart on purpose: Turbopack is never offered as a fix for shipped kilobytes, and trimming a bundle is never offered as a fix for a slow next dev.
severitylow | medium | high — how bad it is when it bites.
likelihoodlow | medium | high — how likely it is to bite.
prioritycritical | high | medium | low — severity by likelihood. critical is reserved for something that breaks the build or the runtime on the version in use, or that exposes a secret to the browser, so sort on this field and work top-down. This is also a field to gate a pipeline on.
resourceThe Config/next.config.ts, Script/dev, Route//dashboard, Dependency/next or file this is about — always something that appears in sources, or the literal (missing from the pasted files) when the finding is about something absent.
problemWhat is wrong, in these files specifically.
impactWhat it costs — dev seconds, shipped kilobytes, a broken build, an exposed value.
fixThe concrete change to make — not "optimize the config".
snippetA corrected TypeScript / JavaScript / JSON / shell fragment you can paste: the fixed block, correctly indented, matching the file it belongs to, not the whole file. Empty string when a snippet would add nothing. Secret values are never echoed — a placeholder appears instead.

Each entry in migration_steps:

ColumnMeaning
stepThe short name of the step, e.g. Move the SVG loader to a Turbopack rule.
actionWhat to actually do, in this project's files.
whyOne sentence tying the step to the findings.
commandA real shell command when one exists (npm pkg set scripts.dev="next dev", npx @next/codemod@latest upgrade latest), and the empty string when the step is a file edit. This is what the app's "plan as a shell script" export is built from — file-edit steps become comments.

coverage_check semantics:

CaseWhat you get
Every flag id you sentEach prescan_facts.flags id appears in coverage_check exactly once. Nothing you flagged is silently dropped, which makes this the field to assert on in a CI check. Ids in prescan_facts.resources are not reconciled here — they shape the inventory instead.
addressed: trueThe flag is covered by the review; note names the finding id that covers it.
addressed: falseThe flag was deliberately set aside; note gives the reason — a check that fired but is not a real problem for this project (a .next wipe in a one-off clean script nobody runs in the dev loop, a raw <img> on a fixed-size inline SVG sprite).
Nothing sentOmit prescan_facts, or send the two empty arrays, and coverage_check comes back empty. The rest of the review is unaffected.

A small, realistic result for the input above, trimmed for length:

{
  "review_name": "storefront — Next.js build review",
  "posture": "migration-blocked",
  "verdict": "One SVG webpack loader keeps this project off the default Turbopack dev path;
              move it to a turbopack rule and the --webpack flag can go with it.",
  "exec_summary": "The project is on Next.js 16, where next dev runs Turbopack by default, but the
                   dev script opts out with --webpack. The reason is visible in the config: a
                   webpack() block registering @svgr/webpack, which Turbopack cannot run.

                   Two smaller things ride along. swcMinify was removed — minification is always
                   on now — and the dev script deletes .next on every start, which throws away the
                   file-system cache that makes warm starts fast. Both are one-line fixes.",
  "assumptions": [
    "No Babel config exists outside the files pasted here.",
    "The 14s dev startup was measured on a cold .next, since the dev script wipes it."
  ],
  "open_questions": [
    "How many SVG imports are there — enough to justify a loader over next/image?",
    "Does CI restore .next between builds, or is every build cold there too?"
  ],
  "inventory": [
    { "kind": "Config", "name": "next.config.ts", "scope": "next.config.ts",
      "role": "Registers the SVG webpack loader and sets swcMinify; nothing else." },
    { "kind": "Script", "name": "dev", "scope": "package.json",
      "role": "Wipes .next, then starts next dev pinned to the webpack bundler." },
    { "kind": "Dependency", "name": "next", "scope": "package.json",
      "role": "16.0.1 — Turbopack is the dev default on this major." }
  ],
  "findings": [
    { "id": "NC-001", "category": "compatibility",
      "severity": "high", "likelihood": "high", "priority": "high",
      "resource": "Config/next.config.ts",
      "problem": "webpack(config) registers @svgr/webpack, which Turbopack cannot run, so the dev
                 script pins itself to --webpack.",
      "impact": "Every developer pays a cold webpack dev start and slower hot updates — on the
                 measured 14s startup, most of it — for one loader.",
      "fix": "Declare the SVG transform as a Turbopack rule and delete the webpack() block.",
      "snippet": "turbopack: {\n  rules: {\n    \"*.svg\": { loaders: [\"@svgr/webpack\"], as: \"*.js\" }\n  }\n}" },
    { "id": "NC-002", "category": "caching",
      "severity": "medium", "likelihood": "high", "priority": "high",
      "resource": "Script/dev",
      "problem": "The dev script runs rm -rf .next before every start, discarding Turbopack's
                 persistent file-system cache.",
      "impact": "Every start is a cold start; the warm-start path this project would gain from
                 NC-001 never happens.",
      "fix": "Drop the wipe from dev and keep it as a separate clean script for the rare case
              where the cache is actually suspect.",
      "snippet": "\"scripts\": {\n  \"dev\": \"next dev\",\n  \"clean\": \"rm -rf .next\"\n}" },
    { "id": "NC-003", "category": "hygiene",
      "severity": "low", "likelihood": "medium", "priority": "low",
      "resource": "Config/next.config.ts",
      "problem": "swcMinify is set, but the option was removed — minification is always on.",
      "impact": "No runtime effect; it signals a config that has not been re-read across a major
                 upgrade, which is where the other two findings came from.",
      "fix": "Delete the swcMinify line.",
      "snippet": "" }
  ],
  "migration_steps": [
    { "step": "Move the SVG loader to a Turbopack rule",
      "action": "Replace the webpack() block in next.config.ts with the turbopack.rules entry
                 from NC-001, then run next dev once to confirm the SVG imports still resolve.",
      "why": "It is the only webpack-specific thing in the build surface.",
      "command": "" },
    { "step": "Drop the dev escape hatch",
      "action": "Remove --webpack and the rm -rf .next from the dev script.",
      "why": "Both blockers are gone once the rule is in place.",
      "command": "npm pkg set scripts.dev=\"next dev\"" },
    { "step": "Clean up the removed option",
      "action": "Delete swcMinify from next.config.ts.",
      "why": "It does nothing on 16 and hides which options are still load-bearing.",
      "command": "" }
  ],
  "coverage_check": [
    { "id": "custom-webpack:next.config.ts", "addressed": true, "note": "NC-001." },
    { "id": "force-webpack:dev", "addressed": true, "note": "NC-001 and step 2 of the plan." },
    { "id": "cache-wipe:dev", "addressed": true, "note": "NC-002." },
    { "id": "removed-option:swcminify", "addressed": true, "note": "NC-003." }
  ],
  "quick_wins": [
    "Delete swcMinify — it has been a no-op since the option was removed.",
    "Take rm -rf .next out of the dev script and give it its own clean script."
  ],
  "focus_areas": [
    { "area": "Getting onto the default dev path",
      "why": "A single loader is the only thing keeping this project on webpack.",
      "finding_ids": ["NC-001"] },
    { "area": "Stop throwing the cache away",
      "why": "The dev script guarantees a cold start even after the bundler is fixed.",
      "finding_ids": ["NC-002"] }
  ],
  "summary": "Move the one loader to a Turbopack rule, drop --webpack and the cache wipe, and this
              project is on the fast dev path within an afternoon. Nothing here affects the
              production bundle — no build output was pasted, so first-load weight is unjudged;
              send the next build route table if that is the question."
}

This is AI-generated review from source text, not a build sign-off: it sees only what you sent, never a real install, a real build or the rest of the repository. Check assumptions and open_questions before you act on the rankings, run every snippet through your own build and linter, and keep a human reviewer in the loop.

Step 5 — Stream the review as it is written

POST /run-stream

/run-stream takes exactly the same body as /run but answers with server-sent events, so you can show progress instead of a spinner — useful here because a full findings table with corrected config plus an ordered plan makes for a long reply. This app's own progress panel is this endpoint. Events are separated by a blank line; each has an event: line and a data: line carrying JSON.

EventPayloadMeaning
job{job_id, status}Sent once, when the job is accepted — show "starting".
delta{text}A chunk of the reply, in order. Append it; the accumulated length is your only progress signal (the total is not known in advance). The app advances its step list by watching for the "review_name", "inventory", "findings", "migration_steps", "coverage_check" and "focus_areas" keys as they arrive.
done{job_id, status, charged_credits, output}The final, authoritative result — read the review from output.output rather than trusting concatenated deltas, and the settled price from charged_credits.
error{code, message}Replaces done when the run fails.
# -N disables buffering so events print as they arrive
curl -N -s -X POST "$API/run-stream" \
  -H "Authorization: Bearer $TOKEN" -H "Content-Type: application/json" \
  -H "Idempotency-Key: nc-$(date +%s)" \
  -d @input.json

# event: job
# data: {"job_id":"job_...","status":"running"}
#
# event: delta
# data: {"text":"{\"review_name\":\"store"}
# ...
# event: done
# data: {"job_id":"job_...","status":"succeeded","charged_credits":648,"output":{"output":"{...}"}}
import json, requests

result = None
with requests.post(
    API + "/run-stream",
    headers={"Authorization": f"Bearer {TOKEN}",
             "Idempotency-Key": "nc-001"},
    json=payload,
    stream=True,
) as r:
    r.raise_for_status()
    event = None
    for line in r.iter_lines(decode_unicode=True):
        if not line:
            continue
        if line.startswith("event:"):
            event = line[len("event:"):].strip()
        elif line.startswith("data:"):
            data = json.loads(line[len("data:"):].strip())
            if event == "delta":
                print(".", end="", flush=True)          # live progress
            elif event == "done":
                result = data
            elif event == "error":
                raise RuntimeError(data.get("message", "run failed"))

review = json.loads(result["output"]["output"])          # authoritative
print("charged:", result["charged_credits"], "-", review["review_name"])
print("posture:", review["posture"])
for f in review["findings"]:
    print(f'  [{f["priority"]}] {f["id"]} {f["resource"]}: {f["problem"]}')
with open("review.json", "w", encoding="utf-8") as fh:
    json.dump(review, fh, indent=2)
const res = await fetch(API + "/run-stream", {
  method: "POST",
  headers: {
    Authorization: `Bearer ${TOKEN}`,
    "Content-Type": "application/json",
    "Idempotency-Key": crypto.randomUUID(),
  },
  body: JSON.stringify(payload),
});

const reader = res.body.getReader();
const decoder = new TextDecoder();
let buf = "", done = null;

for (;;) {
  const chunk = await reader.read();
  if (chunk.done) break;
  buf += decoder.decode(chunk.value, { stream: true });
  const frames = buf.split("\n\n");
  buf = frames.pop();
  for (const frame of frames) {
    const name = /^event:\s*(.+)$/m.exec(frame)?.[1];
    const body = /^data:\s*(.+)$/m.exec(frame)?.[1];
    if (!name || !body) continue;
    const data = JSON.parse(body);
    if (name === "delta") process.stdout.write(".");   // live progress
    if (name === "done") done = data;
    if (name === "error") throw new Error(data.message ?? "run failed");
  }
}

const review = JSON.parse(done.output.output);
console.log(`\n${done.charged_credits} credits - ${review.review_name} [${review.posture}]`);
for (const f of review.findings) console.log(`  [${f.priority}] ${f.id} ${f.resource}`);
writeFileSync("review.json", JSON.stringify(review, null, 2));
body, _ := json.Marshal(payload)
req, _ := http.NewRequest("POST", API+"/run-stream", bytes.NewReader(body))
req.Header.Set("Authorization", "Bearer "+token)
req.Header.Set("Content-Type", "application/json")
req.Header.Set("Idempotency-Key", "nc-001")

res, err := http.DefaultClient.Do(req)
if err != nil {
	log.Fatal(err)
}
defer res.Body.Close()

var event string
var final map[string]any
sc := bufio.NewScanner(res.Body)
sc.Buffer(make([]byte, 0, 64*1024), 4*1024*1024)
for sc.Scan() {
	line := sc.Text()
	switch {
	case strings.HasPrefix(line, "event:"):
		event = strings.TrimSpace(strings.TrimPrefix(line, "event:"))
	case strings.HasPrefix(line, "data:"):
		var data map[string]any
		json.Unmarshal([]byte(strings.TrimPrefix(line, "data:")), &data)
		switch event {
		case "delta":
			fmt.Print(".") // live progress
		case "done":
			final = data
		case "error":
			log.Fatal(data["message"])
		}
	}
}
// final["output"].(map[string]any)["output"].(string) is the review JSON —
// unmarshal it into the Review struct from step 4, then write it to review.json.
// Java 17+ — read the stream line by line instead of buffering the body.
var req = HttpRequest.newBuilder(URI.create(API + "/run-stream"))
    .header("Authorization", "Bearer " + TOKEN)
    .header("Content-Type", "application/json")
    .header("Idempotency-Key", "nc-001")
    .POST(HttpRequest.BodyPublishers.ofString(jsonPayload))
    .build();

var res = HTTP.send(req, HttpResponse.BodyHandlers.ofLines());
String event = null, done = null;
for (String line : (Iterable<String>) res.body()::iterator) {
    if (line.startsWith("event:")) {
        event = line.substring(6).trim();
    } else if (line.startsWith("data:")) {
        String data = line.substring(5).trim();
        if ("delta".equals(event)) System.out.print(".");   // live progress
        else if ("done".equals(event)) done = data;
        else if ("error".equals(event)) throw new RuntimeException(data);
    }
}
// parse `done`, then parse data.output.output again — it is a JSON string holding
// review_name, posture, verdict, inventory[], findings[], migration_steps[],
// coverage_check[], quick_wins[], focus_areas[] and the rest.
require "net/http"
require "json"

uri = URI(API + "/run-stream")
req = Net::HTTP::Post.new(uri)
req["Authorization"] = "Bearer #{TOKEN}"
req["Content-Type"] = "application/json"
req["Idempotency-Key"] = "nc-001"
req.body = payload.to_json

event = nil
done = nil
Net::HTTP.start(uri.host, uri.port, use_ssl: true) do |http|
  http.request(req) do |res|
    res.read_body do |chunk|
      chunk.each_line do |line|
        line = line.strip
        if line.start_with?("event:")
          event = line.delete_prefix("event:").strip
        elsif line.start_with?("data:")
          data = JSON.parse(line.delete_prefix("data:").strip)
          case event
          when "delta" then print "."           # live progress
          when "done"  then done = data
          when "error" then raise (data["message"] || "run failed")
          end
        end
      end
    end
  end
end

review = JSON.parse(done["output"]["output"])
puts "\n#{done["charged_credits"]} credits - #{review["review_name"]} [#{review["posture"]}]"
review["findings"].each { |f| puts "  [#{f["priority"]}] #{f["id"]} #{f["resource"]}" }
File.write("review.json", JSON.pretty_generate(review))
$event = null;
$done  = null;

$ch = curl_init(API . "/run-stream");
curl_setopt_array($ch, [
    CURLOPT_POST       => true,
    CURLOPT_HTTPHEADER => [
        "Authorization: Bearer $TOKEN",
        "Content-Type: application/json",
        "Idempotency-Key: nc-001",
    ],
    CURLOPT_POSTFIELDS => json_encode($payload),
    CURLOPT_WRITEFUNCTION => function ($ch, $chunk) use (&$event, &$done) {
        foreach (explode("\n", $chunk) as $line) {
            $line = trim($line);
            if (str_starts_with($line, "event:")) {
                $event = trim(substr($line, 6));
            } elseif (str_starts_with($line, "data:")) {
                $data = json_decode(trim(substr($line, 5)), true);
                if ($event === "delta") { echo "."; }        // live progress
                elseif ($event === "done") { $done = $data; }
                elseif ($event === "error") { throw new Exception($data["message"] ?? "run failed"); }
            }
        }
        return strlen($chunk);
    },
]);
curl_exec($ch);
curl_close($ch);

$review = json_decode($done["output"]["output"], true);
echo "\n{$done['charged_credits']} credits - {$review['review_name']} [{$review['posture']}]\n";
foreach ($review["findings"] as $f) {
    echo "  [{$f['priority']}] {$f['id']} {$f['resource']}\n";
}
file_put_contents("review.json", json_encode($review, JSON_PRETTY_PRINT));
var req = new HttpRequestMessage(HttpMethod.Post, Api + "/run-stream") {
    Content = JsonContent.Create(payload),
};
req.Headers.Add("Idempotency-Key", "nc-001");

using var res = await Http.SendAsync(req, HttpCompletionOption.ResponseHeadersRead);
using var reader = new StreamReader(await res.Content.ReadAsStreamAsync());

string? evt = null, done = null;
while (await reader.ReadLineAsync() is { } line)
{
    if (line.StartsWith("event:")) evt = line[6..].Trim();
    else if (line.StartsWith("data:"))
    {
        var data = line[5..].Trim();
        if (evt == "delta") Console.Write(".");            // live progress
        else if (evt == "done") done = data;
        else if (evt == "error") throw new Exception(data);
    }
}

using var final = JsonDocument.Parse(done!);
var text = final.RootElement.GetProperty("output").GetProperty("output").GetString();
using var reviewDoc = JsonDocument.Parse(text!);
var review = reviewDoc.RootElement;
Console.WriteLine($"{review.GetProperty("review_name")} [{review.GetProperty("posture")}]");
foreach (var f in review.GetProperty("findings").EnumerateArray())
    Console.WriteLine($"  [{f.GetProperty("priority")}] {f.GetProperty("id")} {f.GetProperty("resource")}");
await File.WriteAllTextAsync("review.json", text!);

In a browser, the native EventSource only speaks GET, and this endpoint is a POST — read the fetch response body incrementally, as the JavaScript sample above does. On an idempotent replay the server may answer with a plain JSON envelope instead of an event stream; check the Content-Type before you start parsing frames.

Step 6 — A CI gate on the posture

The last mile: read the review JSON and turn it into an exit code. The rule below fails the job when posture is migration-blocked — something in the project actively prevents the default Turbopack dev path or breaks on the declared version — or when any finding is critical, and warns without failing on tuning-recommended. If you send prescan_facts.flags, also assert that every id you sent came back in coverage_check: that is your guarantee that nothing you already knew about was quietly dropped.

The Idempotency-Key here is derived from the input — a hash of the exact payload — rather than a timestamp or a random UUID. The same next.config and package.json therefore produce the same key, so a re-run of a red CI job, a retried flaky step or two jobs racing on the same commit all replay the first result instead of paying for a second review. Change a byte of the input and the key changes with it, which is exactly when you do want a fresh run.

# input.json is the payload built in step 3
KEY="nc-$(shasum -a 256 input.json | cut -c1-32)"   # same input, same key, no double charge

JOB_ID=$(curl -s -X POST "$API/run" \
  -H "Authorization: Bearer $TOKEN" -H "Content-Type: application/json" \
  -H "Idempotency-Key: $KEY" \
  -d @input.json | jq -r '.data.job_id')

while :; do
  JOB=$(curl -s "$API/jobs/$JOB_ID" -H "Authorization: Bearer $TOKEN")
  STATUS=$(echo "$JOB" | jq -r '.data.status')
  [ "$STATUS" = "succeeded" ] || [ "$STATUS" = "failed" ] && break
  sleep 2
done
[ "$STATUS" = "succeeded" ] || { echo "run failed"; exit 2; }

echo "$JOB" | jq -r '.data.output.output' > review.json

POSTURE=$(jq -r '.posture' review.json)
CRIT=$(jq '[.findings[] | select(.priority == "critical")] | length' review.json)
UNSEEN=$(jq -r '[.coverage_check[] | select(.addressed | not) | .id] | join(", ")' review.json)

echo "posture: $POSTURE   critical: $CRIT"
[ -n "$UNSEEN" ] && echo "set aside: $UNSEEN"
jq -r '.migration_steps[] | "next: \(.step) - \(.action)"' review.json | head -3

if [ "$POSTURE" = "migration-blocked" ] || [ "$CRIT" -gt 0 ]; then
  jq -r '"BLOCKED: \(.verdict)"' review.json
  exit 1
fi
[ "$POSTURE" = "tuning-recommended" ] && jq -r '"warning: \(.verdict)"' review.json
exit 0
import hashlib, json, sys, time

# The key is a hash of the payload itself: identical input replays, changed input re-runs.
canonical = json.dumps(payload, sort_keys=True, separators=(",", ":"))
key = "nc-" + hashlib.sha256(canonical.encode("utf-8")).hexdigest()[:32]

job_id = api("POST", "/run", payload, **{"Idempotency-Key": key})["job_id"]
while True:
    job = api("GET", f"/jobs/{job_id}")
    if job["status"] in ("succeeded", "failed"):
        break
    time.sleep(1.5)
if job["status"] != "succeeded":
    sys.exit(2)

raw = job["output"]
if isinstance(raw, dict) and "output" in raw:
    raw = raw["output"]
review = json.loads(raw) if isinstance(raw, str) else raw

critical = [f for f in review["findings"] if f["priority"] == "critical"]
set_aside = [c["id"] for c in review["coverage_check"] if not c["addressed"]]
sent = {f["id"] for f in payload["prescan_facts"]["flags"]}
missing = sent - {c["id"] for c in review["coverage_check"]}

print(f'posture: {review["posture"]}   critical: {len(critical)}')
if set_aside:
    print("set aside:", ", ".join(set_aside))
if missing:
    print("NOT RECONCILED:", ", ".join(sorted(missing)))
for s in review["migration_steps"][:3]:
    print(f'next: {s["step"]} - {s["action"]}')

if review["posture"] == "migration-blocked" or critical or missing:
    sys.exit(f'BLOCKED: {review["verdict"]}')
if review["posture"] == "tuning-recommended":
    print("warning:", review["verdict"])
import { createHash } from "node:crypto";

// The key is a hash of the payload itself: identical input replays, changed input re-runs.
const canonical = JSON.stringify(payload, Object.keys(payload).sort());
const key = "nc-" + createHash("sha256").update(canonical).digest("hex").slice(0, 32);

const { job_id } = await api("POST", "/run", payload, { "Idempotency-Key": key });

let job;
do {
  await new Promise((r) => setTimeout(r, 1500));
  job = await api("GET", `/jobs/${job_id}`);
} while (job.status !== "succeeded" && job.status !== "failed");
if (job.status !== "succeeded") process.exit(2);

const raw = job.output?.output ?? job.output;
const review = typeof raw === "string" ? JSON.parse(raw) : raw;

const critical = review.findings.filter((f) => f.priority === "critical");
const setAside = review.coverage_check.filter((c) => !c.addressed).map((c) => c.id);
const seen = new Set(review.coverage_check.map((c) => c.id));
const missing = payload.prescan_facts.flags.map((f) => f.id).filter((id) => !seen.has(id));

console.log(`posture: ${review.posture}   critical: ${critical.length}`);
if (setAside.length) console.log("set aside:", setAside.join(", "));
if (missing.length) console.log("NOT RECONCILED:", missing.join(", "));
for (const s of review.migration_steps.slice(0, 3)) {
  console.log(`next: ${s.step} - ${s.action}`);
}

if (review.posture === "migration-blocked" || critical.length || missing.length) {
  console.error(`BLOCKED: ${review.verdict}`);
  process.exit(1);
}
if (review.posture === "tuning-recommended") console.warn(`warning: ${review.verdict}`);
// The key is a hash of the payload itself: identical input replays, changed input re-runs.
raw, _ := json.Marshal(payload)
sum := sha256.Sum256(raw)
key := "nc-" + hex.EncodeToString(sum[:])[:32]

body := bytes.NewReader(raw)
req, _ := http.NewRequest("POST", API+"/run", body)
req.Header.Set("Authorization", "Bearer "+token)
req.Header.Set("Content-Type", "application/json")
req.Header.Set("Idempotency-Key", key)
// ...send it, read data.job_id, then poll /jobs/{id} exactly as in step 4.

// review is the Review struct from step 4:
critical := 0
for _, f := range review.Findings {
	if f.Priority == "critical" {
		critical++
	}
}
for _, c := range review.CoverageCheck {
	if !c.Addressed {
		fmt.Println("set aside:", c.ID, "-", c.Note)
	}
}
fmt.Printf("posture: %s   critical: %d\n", review.Posture, critical)
for i, s := range review.MigrationSteps {
	if i < 3 {
		fmt.Printf("next: %s - %s\n", s.Step, s.Action)
	}
}
if review.Posture == "migration-blocked" || critical > 0 {
	fmt.Fprintln(os.Stderr, "BLOCKED: "+review.Verdict)
	os.Exit(1)
}
// The key is a hash of the payload itself: identical input replays, changed input re-runs.
import java.security.MessageDigest;
import java.util.HexFormat;

byte[] digest = MessageDigest.getInstance("SHA-256")
    .digest(jsonPayload.getBytes(java.nio.charset.StandardCharsets.UTF_8));
String key = "nc-" + HexFormat.of().formatHex(digest).substring(0, 32);

var req = HttpRequest.newBuilder(URI.create(API + "/run"))
    .header("Authorization", "Bearer " + TOKEN)
    .header("Content-Type", "application/json")
    .header("Idempotency-Key", key)
    .POST(HttpRequest.BodyPublishers.ofString(jsonPayload))
    .build();
// send it, read data.job_id, poll /jobs/{id} as in step 4, then parse data.output.output.

// With the review parsed (your JSON library of choice):
//   String posture = review.get("posture");
//   long critical  = count of findings[] whose priority equals "critical";
//   every coverage_check[] entry with addressed == false is a set-aside prescan flag.
// if (posture.equals("migration-blocked") || critical > 0) {
//     System.err.println("BLOCKED: " + review.get("verdict"));
//     System.exit(1);
// }
// migration_steps[] is the ordered to-do list to print above the failure.
require "digest"

# The key is a hash of the payload itself: identical input replays, changed input re-runs.
key = "nc-" + Digest::SHA256.hexdigest(JSON.generate(payload))[0, 32]

started = api("POST", "/run", payload) # add the header in your api() helper:
                                       #   req["Idempotency-Key"] = key
job = nil
loop do
  job = api("GET", "/jobs/#{started["job_id"]}")
  break if %w[succeeded failed].include?(job["status"])
  sleep 1.5
end
exit 2 unless job["status"] == "succeeded"

raw = job["output"].is_a?(Hash) ? job["output"].fetch("output", job["output"]) : job["output"]
review = raw.is_a?(String) ? JSON.parse(raw) : raw

critical  = review["findings"].count { |f| f["priority"] == "critical" }
set_aside = review["coverage_check"].reject { |c| c["addressed"] }.map { |c| c["id"] }
seen      = review["coverage_check"].map { |c| c["id"] }
missing   = payload[:prescan_facts][:flags].map { |f| f[:id] } - seen

puts "posture: #{review["posture"]}   critical: #{critical}"
puts "set aside: #{set_aside.join(", ")}" unless set_aside.empty?
puts "NOT RECONCILED: #{missing.join(", ")}" unless missing.empty?
review["migration_steps"].first(3).each { |s| puts "next: #{s["step"]} - #{s["action"]}" }

if review["posture"] == "migration-blocked" || critical > 0 || !missing.empty?
  warn "BLOCKED: #{review["verdict"]}"
  exit 1
end
warn "warning: #{review["verdict"]}" if review["posture"] == "tuning-recommended"
<?php
// The key is a hash of the payload itself: identical input replays, changed input re-runs.
$key = "nc-" . substr(hash("sha256", json_encode($payload)), 0, 32);

// pass $key through to the request as the Idempotency-Key header, then poll as in step 4
$started = api("POST", "/run", $payload);
do {
    sleep(2);
    $job = api("GET", "/jobs/" . $started["job_id"]);
} while (!in_array($job["status"], ["succeeded", "failed"]));
if ($job["status"] !== "succeeded") { exit(2); }

$raw = is_array($job["output"]) ? ($job["output"]["output"] ?? $job["output"]) : $job["output"];
$review = is_string($raw) ? json_decode($raw, true) : $raw;

$critical = count(array_filter($review["findings"], fn($f) => $f["priority"] === "critical"));
$setAside = array_column(array_filter($review["coverage_check"], fn($c) => !$c["addressed"]), "id");
$seen     = array_column($review["coverage_check"], "id");
$missing  = array_diff(array_column($payload["prescan_facts"]["flags"], "id"), $seen);

echo "posture: {$review['posture']}   critical: $critical\n";
if ($setAside) { echo "set aside: " . implode(", ", $setAside) . "\n"; }
if ($missing)  { echo "NOT RECONCILED: " . implode(", ", $missing) . "\n"; }
foreach (array_slice($review["migration_steps"], 0, 3) as $s) {
    echo "next: {$s['step']} - {$s['action']}\n";
}

if ($review["posture"] === "migration-blocked" || $critical > 0 || $missing) {
    fwrite(STDERR, "BLOCKED: {$review['verdict']}\n");
    exit(1);
}
if ($review["posture"] === "tuning-recommended") {
    fwrite(STDERR, "warning: {$review['verdict']}\n");
}
using System.Security.Cryptography;

// The key is a hash of the payload itself: identical input replays, changed input re-runs.
var bytes = JsonSerializer.SerializeToUtf8Bytes(payload);
var key = "nc-" + Convert.ToHexString(SHA256.HashData(bytes)).ToLowerInvariant()[..32];

var run = new HttpRequestMessage(HttpMethod.Post, Api + "/run") {
    Content = JsonContent.Create(payload),
};
run.Headers.Add("Idempotency-Key", key);
// send it, read data.job_id, poll /jobs/{id} as in step 4, then:

var reviewText = job.GetProperty("output").GetProperty("output").GetString();
using var reviewDoc = JsonDocument.Parse(reviewText!);
var review = reviewDoc.RootElement;

var posture = review.GetProperty("posture").GetString();
var critical = review.GetProperty("findings").EnumerateArray()
    .Count(f => f.GetProperty("priority").GetString() == "critical");

Console.WriteLine($"posture: {posture}   critical: {critical}");
foreach (var c in review.GetProperty("coverage_check").EnumerateArray())
    if (!c.GetProperty("addressed").GetBoolean())
        Console.WriteLine($"set aside: {c.GetProperty("id")} - {c.GetProperty("note")}");
foreach (var s in review.GetProperty("migration_steps").EnumerateArray().Take(3))
    Console.WriteLine($"next: {s.GetProperty("step")} - {s.GetProperty("action")}");

if (posture == "migration-blocked" || critical > 0)
{
    Console.Error.WriteLine($"BLOCKED: {review.GetProperty("verdict")}");
    Environment.Exit(1);
}

Gate on posture and priority, not on the finding count — a thorough review of a healthy project can list a dozen improvements and still be turbopack-ready. And keep the review artifact: review.json plus migration_steps is the ticket description for whatever the gate just blocked.