Stripe Clinic — API

Paste the payment code, get a structured go-live review.

API tokens Open the app

Review your Stripe integration from your own scripts

Send your payment source — one file or several, each preceded by a // file: name.js comment — and get back one JSON object: a go-live posture, the inventory of every payment call, webhook event, route and client construction with its role, prioritized findings across security, correctness, idempotency, webhooks, lifecycle and maintainability, each with a corrected fragment in your SDK's language, 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 billing. Wire it into whatever guards your payment code: a required check on payments/, a pre-release audit before a live key is switched on, 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 stripe-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 payment code 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":"stripe-clinic"}' | jq -r '.data.token'
token = api("POST", "/guest", {"slug": "stripe-clinic"})["token"]
const { token } = await api("POST", "/guest", { slug: "stripe-clinic" });
var guest struct{ Token string `json:"token"` }
err := call("POST", "/guest", map[string]string{"slug": "stripe-clinic"}, &guest)
String envelope = api("POST", "/guest", """
    {"slug":"stripe-clinic"}""");
// token is at data.token in the returned JSON
token = api("POST", "/guest", { slug: "stripe-clinic" })["token"]
$token = api("POST", "/guest", ["slug" => "stripe-clinic"])["token"];
var guest = await SkillSafe.ApiAsync(HttpMethod.Post, "/guest",
    new { slug = "stripe-clinic" });
var token = guest.GetProperty("token").GetString();

The app stores this browser's token under the localStorage key skillsafe_app_token:stripe-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 bundle.

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 payments/ directory in and want a ceiling before spending credits.

Input fieldTypeNotes
codestring, requiredThe payment source: the client construction, the checkout or payment-intent route, the webhook handler, subscription helpers, browser-side confirmation code. One file or several concatenated, each preceded by a // file: name.js comment. This is the model's only evidence — nothing is executed and no call is made to any payment provider. 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.
stackstringnode | python | ruby | php | go | java | dotnet | mixed | unknown — the language and SDK the corrected snippets must match, down to the naming convention (stripe.paymentIntents.create in Node, stripe.PaymentIntent.create in Python, Stripe::PaymentIntent.create in Ruby).
concernstringgeneral | security | webhooks | subscriptions | reliability — 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: SDK and API version, hosting, how much real money has run through this, incidents already seen (double charges, paid customers without access, webhook retries piling up), what is handled outside the pasted files, and any gap you have already chosen to accept. Clipped at 20,000 characters.
prescan_factsobject, optionalWhat a client-side scanner mechanically matched in the code: {"resources": [], "flags": []}. Each entry is {id, label}. Resource ids look like res:call/checkout-session.create, res:event/checkout.session.completed, res:route/post-webhooks-stripe or res:webhook/verify; flag ids are <check>:<name>hardcoded-key:sk-live-6, no-verify:handler, raw-body:json-middleware, no-idempotency:paymentintents.create, amount-decimal:unit_amount-21, client-amount:amount-35, no-webhook:none, no-dedupe:event-id, no-sca:requires-action, card-data:38, no-version-pin:client, no-error-handling:none, no-currency:35, sub-lifecycle:none. Every flag id you send comes back in coverage_check. The web UI fills this from its own scan, with every key-shaped literal masked before it leaves the browser; API callers may omit the field 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 > webhook.js <<'CODE'
app.post("/webhooks/stripe", (req, res) => {
  const event = req.body;
  if (event.type === "checkout.session.completed") grantPro(event.data.object.customer_email);
  res.sendStatus(200);
});
CODE

jq -n --rawfile code webhook.js \
  '{code: $code,
    stack: "node",
    concern: "webhooks",
    context: "Node 20 / Express 4, live since June, three tickets from customers who paid and got nothing.",
    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'
CODE = """app.post("/webhooks/stripe", (req, res) => {
  const event = req.body;
  if (event.type === "checkout.session.completed") grantPro(event.data.object.customer_email);
  res.sendStatus(200);
});
"""

payload = {
    "code": CODE,
    "stack": "node",
    "concern": "webhooks",
    "context": "Node 20 / Express 4, live since June, three tickets from customers who paid and got nothing.",
    "prescan_facts": {"resources": [], "flags": []},
}

est = api("POST", "/estimate", payload)
print("worst case:", est.get("hold_credits", est.get("credits")), "credits")
const code = [
  'app.post("/webhooks/stripe", (req, res) => {',
  '  const event = req.body;',
  '  if (event.type === "checkout.session.completed") grantPro(event.data.object.customer_email);',
  '  res.sendStatus(200);',
  '});',
].join("\n");

const payload = {
  code,
  stack: "node",
  concern: "webhooks",
  context: "Node 20 / Express 4, live since June, three tickets from customers who paid and got nothing.",
  prescan_facts: { resources: [], flags: [] },
};

const est = await api("POST", "/estimate", payload);
console.log("worst case:", est.hold_credits ?? est.credits, "credits");
const code = `app.post("/webhooks/stripe", (req, res) => {
  const event = req.body;
  if (event.type === "checkout.session.completed") grantPro(event.data.object.customer_email);
  res.sendStatus(200);
});`

payload := map[string]any{
	"code":    code,
	"stack":   "node",
	"concern": "webhooks",
	"context": "Node 20 / Express 4, live since June, three tickets from customers who paid and got nothing.",
	"prescan_facts": map[string]any{
		"resources": []any{}, "flags": []any{},
	},
}

var est struct{ HoldCredits int64 `json:"hold_credits"` }
err := call("POST", "/estimate", payload, &est)
String code = """
    app.post("/webhooks/stripe", (req, res) => {
      const event = req.body;
      if (event.type === "checkout.session.completed") grantPro(event.data.object.customer_email);
      res.sendStatus(200);
    });
    """;

String jsonPayload = """
    {"code": %s,
     "stack": "node",
     "concern": "webhooks",
     "context": "Node 20 / Express 4, live since June, three tickets from customers who paid and got nothing.",
     "prescan_facts": {"resources": [], "flags": []}}
    """.formatted(toJsonString(code));

String envelope = api("POST", "/estimate", jsonPayload);
// worst-case cost is at data.hold_credits
CODE = <<~JS
  app.post("/webhooks/stripe", (req, res) => {
    const event = req.body;
    if (event.type === "checkout.session.completed") grantPro(event.data.object.customer_email);
    res.sendStatus(200);
  });
JS

payload = { code: CODE,
            stack: "node",
            concern: "webhooks",
            context: "Node 20 / Express 4, live since June, three tickets from customers who paid and got nothing.",
            prescan_facts: { resources: [], flags: [] } }

est = api("POST", "/estimate", payload)
puts "worst case: #{est["hold_credits"] || est["credits"]} credits"
$code = <<<'JS'
app.post("/webhooks/stripe", (req, res) => {
  const event = req.body;
  if (event.type === "checkout.session.completed") grantPro(event.data.object.customer_email);
  res.sendStatus(200);
});
JS;

$payload = [
    "code"          => $code,
    "stack"         => "node",
    "concern"       => "webhooks",
    "context"       => "Node 20 / Express 4, live since June, three tickets from customers who paid and got nothing.",
    "prescan_facts" => ["resources" => [], "flags" => []],
];

$est = api("POST", "/estimate", $payload);
echo "worst case: " . ($est["hold_credits"] ?? $est["credits"]) . " credits\n";
var code = """
    app.post("/webhooks/stripe", (req, res) => {
      const event = req.body;
      if (event.type === "checkout.session.completed") grantPro(event.data.object.customer_email);
      res.sendStatus(200);
    });
    """;

var payload = new {
    code,
    stack = "node",
    concern = "webhooks",
    context = "Node 20 / Express 4, live since June, three tickets from customers who paid and got nothing.",
    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:route/post-webhooks-stripe", "label": "Route/POST /webhooks/stripe"}], "flags": [{"id": "no-verify:handler", "label": "webhook events accepted without verifying the signature"}]} 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. Never send a real key or signing secret in code: replace it with a placeholder first, exactly as the web UI's prescan does before it shows one back to you.

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 code fragment). 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 focus areas, then save the whole object to review.json.

JOB_ID=$(curl -s -X POST "$API/run" \
  -H "Authorization: Bearer $TOKEN" -H "Content-Type: application/json" \
  -H "Idempotency-Key: sc-$(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)"),
  "",
  "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": "sc-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 "-":<16} {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 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}`);
}
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"`
	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 _, 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),
// 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["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["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")} " +
                      $"(L:{f.GetProperty("likelihood")}/S:{f.GetProperty("severity")})");
}
foreach (var a in review.GetProperty("focus_areas").EnumerateArray())
{
    Console.WriteLine($"  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 source alone: findings cite only calls, routes, events and files that actually appear in code, and a construct that is simply absent (no webhook at all, no idempotency key anywhere, no requires_action branch) is reported against the closest real construct or against (missing from the integration). Where the code is 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 integration — a well-built one may honestly yield two or three, and findings is never empty. No secret value is echoed back: a key found in the paste is described and located, never reprinted.

FieldTypeMeaning
review_namestringA short title naming the integration, taken from the code's own naming — e.g. orbitbilling checkout — payments review.
posturestringproduction-ready | hardening-recommended | payment-risk. 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 integration.
assumptionsstring[]Explicit assumptions filling gaps the code 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 Call, Event, Route, Webhook, Config and Product the review parsed out of the code and the part it plays. scope is the file it is defined in.
findingsarrayThe prioritized findings table — ids SC-001, SC-002, … in sequence, at least one entry. Columns are listed below.
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 before the live key is switched on, and what risk remains after that.

The three posture values:

postureWhat it means
production-readyThe integration holds up as written: keys resolved outside the source, webhooks verified and safe to replay, amounts server-resolved integers, the lifecycle handled. Findings still exist, but they are additions and refinements — proration, the billing portal, dunning copy, payout reconciliation, disputes — not blockers. Genuinely well-built integrations land here rather than having severity manufactured for them.
hardening-recommendedThe shape is right, but named gaps should be closed before more volume runs through it — no idempotency key on a charging call, no event de-duplication, an unpinned API version, a decline path that reads as a bug.
payment-riskAt least one pattern will, as written, charge a customer twice, lose a paid order, accept a forged event or expose account credentials: an unverified webhook, a committed live key, an amount taken from the client, raw card data on the server.

Each entry in findings:

ColumnMeaning
idSequential SC-001, SC-002, … — the stable handle referenced from focus_areas[].finding_ids.
categorysecurity | correctness | idempotency | webhooks | lifecycle | maintainability. Weighted by the concern you sent, but never restricted to it.
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 loses money or leaks account authority as written (an unverified webhook, a committed live key, a client-supplied amount, a charging call that can be retried into a second charge), so sort on this field and work top-down. This is also the field to gate a pipeline on.
resourceThe Call/checkout.sessions.create, Route/POST /webhooks/stripe, Event/invoice.paid or file this is about — always something that appears in code, or the literal (missing from the integration) when the finding is about an absent construct.
problemWhat is wrong, in this code specifically.
impactWhat it costs — in money, in support load, in compliance exposure.
fixThe concrete change to make — not "add validation".
snippetA corrected fragment you can paste, in the language of the stack you sent: the fixed block, correctly indented, not the whole file. Empty string when a snippet would add nothing. Secret values are never echoed — a configuration lookup appears instead.

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 integration (a test-mode key in a fixture file, a missing currency on a call that inherits it from a Price id).
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 snippet above, trimmed for length:

{
  "review_name": "orbit webhook — payments review",
  "posture": "payment-risk",
  "verdict": "The handler grants a paid plan from an unverified request body, so anyone who
              learns the URL can grant themselves Pro — verify the signature before anything
              else.",
  "exec_summary": "One Express route is the whole fulfillment path: it reads req.body, matches
                   checkout.session.completed and grants the Pro entitlement. Nothing checks
                   that the request came from the payment provider.

                   The second problem is quieter. The handler is not keyed on event.id, and
                   delivery is at-least-once, so a redelivered event grants the entitlement
                   twice. Both problems are in the same six lines and both are cheap to fix.",
  "assumptions": [
    "The signing secret is available to the process as configuration, since it is not in the paste.",
    "grantPro is idempotent at the database level was NOT assumed — nothing in the paste shows that."
  ],
  "open_questions": [
    "Is the endpoint URL referenced anywhere a customer could read it (a client bundle, a docs page)?",
    "Does grantPro already de-duplicate by customer, or would a second call extend the plan twice?"
  ],
  "inventory": [
    { "kind": "Route", "name": "POST /webhooks/stripe", "scope": "webhook.js",
      "role": "The only fulfillment path: grants the Pro entitlement on checkout completion." },
    { "kind": "Event", "name": "checkout.session.completed", "scope": "webhook.js",
      "role": "The single event type the handler acts on." }
  ],
  "findings": [
    { "id": "SC-001", "category": "webhooks",
      "severity": "high", "likelihood": "high", "priority": "critical",
      "resource": "Route/POST /webhooks/stripe",
      "problem": "The handler assigns req.body straight to event and never calls
                 stripe.webhooks.constructEvent, so the Stripe-Signature header is never
                 checked.",
      "impact": "Anyone who learns the endpoint URL can POST a fabricated
                 checkout.session.completed and receive a paid entitlement for free, and there
                 is no way afterwards to tell forged grants from real ones.",
      "fix": "Mount the raw body for this route only and verify the signature before touching
              the payload; return 400 when verification fails.",
      "snippet": "app.post(\n  \"/webhooks/stripe\",\n  express.raw({ type: \"application/json\" }),\n  (req, res) => {\n    let event;\n    try {\n      event = stripe.webhooks.constructEvent(\n        req.body,\n        req.headers[\"stripe-signature\"],\n        secrets.STRIPE_WEBHOOK_SECRET\n      );\n    } catch (err) {\n      return res.status(400).send(\"invalid signature\");\n    }\n    // ... handle event.type here\n  }\n);" },
    { "id": "SC-002", "category": "idempotency",
      "severity": "medium", "likelihood": "high", "priority": "high",
      "resource": "Route/POST /webhooks/stripe",
      "problem": "The handler never reads event.id, so it cannot tell a first delivery from a
                 redelivery.",
      "impact": "Webhook delivery is at-least-once: a timeout on your side means the same
                 checkout.session.completed arrives again and grantPro runs twice, which
                 double-extends the plan and double-sends the welcome email.",
      "fix": "Record processed event ids and return 200 early when one repeats; write the
              record only after the side effect succeeds.",
      "snippet": "if (await wasEventProcessed(event.id)) return res.sendStatus(200);\nawait grantPro(event.data.object.customer_email);\nawait markEventProcessed(event.id);\nres.sendStatus(200);" }
  ],
  "coverage_check": [
    { "id": "no-verify:handler", "addressed": true, "note": "SC-001." },
    { "id": "no-dedupe:event-id", "addressed": true, "note": "SC-002." }
  ],
  "quick_wins": [
    "Mount express.raw for this route and verify the signature before reading the event.",
    "Return 400, not 200, when verification fails — a 2xx tells the provider a forged event was accepted."
  ],
  "focus_areas": [
    { "area": "Webhook trust",
      "why": "The only critical finding is an unverified endpoint that grants entitlements.",
      "finding_ids": ["SC-001"] },
    { "area": "Safe replay",
      "why": "At-least-once delivery makes a non-idempotent handler a double-grant waiting to happen.",
      "finding_ids": ["SC-002"] }
  ],
  "summary": "Verify the signature before this takes any more traffic, then key the handler on
              event.id so a redelivery cannot grant the same plan twice. After those two changes
              the remaining risk is what is not in the paste at all: nothing here handles
              customer.subscription.deleted, so a cancelled customer keeps Pro."
}

This is an AI-generated review of source text, not a security audit, a PCI assessment or a release sign-off: it sees only what you sent, never your live dashboard configuration, your real traffic or the rest of the codebase. Check assumptions and open_questions before you act on the rankings, run every snippet through your own tests in test mode, and keep a human reviewer in the loop. Not affiliated with or endorsed by Stripe, Inc.

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 code 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", "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 $TOKEN" -H "Content-Type: application/json" \
  -H "Idempotency-Key: sc-$(date +%s)" \
  -d @input.json

# event: job
# data: {"job_id":"job_...","status":"running"}
#
# event: delta
# data: {"text":"{\"review_name\":\"web"}
# ...
# event: done
# data: {"job_id":"job_...","status":"succeeded","charged_credits":612,"output":{"output":"{...}"}}
import json, requests

result = None
with requests.post(
    API + "/run-stream",
    headers={"Authorization": f"Bearer {TOKEN}",
             "Idempotency-Key": "sc-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", "sc-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", "sc-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[], 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"] = "sc-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 $TOKEN",
        "Content-Type: application/json",
        "Idempotency-Key: sc-001",
    ],
    CURLOPT_POSTFIELDS => json_encode($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", "sc-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.