Sec Lens — API

Paste the code, get a senior security review and a hardened rewrite.

API tokens Open the app

Security-review your code from your own scripts

Send code — an API endpoint, a module, a diff, a config file, or a whole grab-bag — and get back one JSON object: an honest ship / fix-first / block verdict, a health check across five security areas, findings ranked by severity each with corrected code, a twelve-item pre-deploy checklist scored against the paste, and a complete hardened rewrite of what you pasted. Everything this app does goes through the SkillSafe App API — plain JSON over HTTPS — so you can wire review into a CI gate, a pull-request bot, or a pre-deploy check that refuses to ship a query built by string concatenation. Every code step below is shown in cURL, Python, JavaScript, Go, Java, Ruby, PHP and C#; pick a language once and the whole page follows.

Basics

Base URL: https://api.skillsafe.ai/v1/app-api, app slug sec-lens. 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 paste 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":"sec-lens"}' | jq -r '.data.token'
token = api("POST", "/guest", {"slug": "sec-lens"})["token"]
const { token } = await api("POST", "/guest", { slug: "sec-lens" });
var guest struct{ Token string `json:"token"` }
err := call("POST", "/guest", map[string]string{"slug": "sec-lens"}, &guest)
String envelope = api("POST", "/guest", """
    {"slug":"sec-lens"}""");
// token is at data.token in the returned JSON
token = api("POST", "/guest", { slug: "sec-lens" })["token"]
$token = api("POST", "/guest", ["slug" => "sec-lens"])["token"];
var guest = await SkillSafe.ApiAsync(HttpMethod.Post, "/guest",
    new { slug = "sec-lens" });
var token = guest.GetProperty("token").GetString();

The app stores this browser's token under the localStorage key skillsafe_app_token:sec-lens, 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 feeding in a whole diff or a directory of route handlers and want a ceiling before spending credits.

Input fieldTypeNotes
codestring, requiredThe code to review: an API endpoint, a module, a diff, a config file, or several files concatenated with file-name comment headers. Any language. Very long pastes may be clipped middle-out, with a [... clipped ...] marker showing where.
stackstringnode | python | go | java | ruby | php | other — calibrates idioms and fixes (parameterized queries via $1 placeholders vs cursor params vs prepared statements).
surfacestringapi (backend code), web (browser code) or fullstack. On web, XSS, token storage and CSP dominate; on api, injection, authorization and rate limiting do.
frameworkstring, optionalThe framework, verbatim — e.g. express, nextjs, django, supabase. Its native security mechanisms are used in the fixes. Left empty, the advice stays generic.
notesstring, optionalExtra context: what the code does, what data it touches, what is already handled elsewhere.
prescan_factsobject, optionalWhat a client-side prescan mechanically detected in the code: {"antipatterns": [], "endpoints": [], "signals": []}. Each entry is {id, label} — keyword-matched danger patterns (ap:sql-concat), route or handler definitions found (endpoint:post /login) and attack-surface signals (sig:db, sig:auth, sig:upload). Every id you send comes back in coverage_check. The web UI fills this from its own scan; API callers may omit the field or send the three 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 > handler.js <<'JS'
app.get("/api/orders/:id", async (req, res) => {
  try {
    const rows = await db.query("SELECT * FROM orders WHERE id = " + req.params.id);
    res.json(rows);
  } catch (err) {
    res.status(500).json({ error: err.stack });
  }
});
JS

jq -n --rawfile c handler.js \
  '{code: $c, stack: "node", surface: "api", framework: "express", notes: "",
    prescan_facts: {antipatterns: [], endpoints: [], signals: []}}' > 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.get("/api/orders/:id", async (req, res) => {
  try {
    const rows = await db.query("SELECT * FROM orders WHERE id = " + req.params.id);
    res.json(rows);
  } catch (err) {
    res.status(500).json({ error: err.stack });
  }
});"""

payload = {
    "code": CODE,
    "stack": "node",
    "surface": "api",
    "framework": "express",
    "notes": "",
    "prescan_facts": {"antipatterns": [], "endpoints": [], "signals": []},
}

est = api("POST", "/estimate", payload)
print("worst case:", est.get("hold_credits", est.get("credits")), "credits")
const code = `app.get("/api/orders/:id", async (req, res) => {
  try {
    const rows = await db.query("SELECT * FROM orders WHERE id = " + req.params.id);
    res.json(rows);
  } catch (err) {
    res.status(500).json({ error: err.stack });
  }
});`;

const payload = {
  code,
  stack: "node",
  surface: "api",
  framework: "express",
  notes: "",
  prescan_facts: { antipatterns: [], endpoints: [], signals: [] },
};

const est = await api("POST", "/estimate", payload);
console.log("worst case:", est.hold_credits ?? est.credits, "credits");
const code = `app.get("/api/orders/:id", async (req, res) => {
  try {
    const rows = await db.query("SELECT * FROM orders WHERE id = " + req.params.id);
    res.json(rows);
  } catch (err) {
    res.status(500).json({ error: err.stack });
  }
});`

payload := map[string]any{
	"code":      code,
	"stack":     "node",
	"surface":   "api",
	"framework": "express",
	"notes":     "",
	"prescan_facts": map[string]any{
		"antipatterns": []any{}, "endpoints": []any{}, "signals": []any{},
	},
}

var est struct{ HoldCredits int64 `json:"hold_credits"` }
err := call("POST", "/estimate", payload, &est)
String code = """
    app.get("/api/orders/:id", async (req, res) => {
      try {
        const rows = await db.query("SELECT * FROM orders WHERE id = " + req.params.id);
        res.json(rows);
      } catch (err) {
        res.status(500).json({ error: err.stack });
      }
    });""";

String jsonPayload = """
    {"code": %s, "stack": "node", "surface": "api", "framework": "express",
     "notes": "",
     "prescan_facts": {"antipatterns": [], "endpoints": [], "signals": []}}
    """.formatted(toJsonString(code));

String envelope = api("POST", "/estimate", jsonPayload);
// worst-case cost is at data.hold_credits
CODE_TEXT = <<~'JS'
  app.get("/api/orders/:id", async (req, res) => {
    try {
      const rows = await db.query("SELECT * FROM orders WHERE id = " + req.params.id);
      res.json(rows);
    } catch (err) {
      res.status(500).json({ error: err.stack });
    }
  });
JS

payload = { code: CODE_TEXT, stack: "node", surface: "api", framework: "express",
            notes: "",
            prescan_facts: { antipatterns: [], endpoints: [], signals: [] } }

est = api("POST", "/estimate", payload)
puts "worst case: #{est["hold_credits"] || est["credits"]} credits"
$code = <<<'JS'
app.get("/api/orders/:id", async (req, res) => {
  try {
    const rows = await db.query("SELECT * FROM orders WHERE id = " + req.params.id);
    res.json(rows);
  } catch (err) {
    res.status(500).json({ error: err.stack });
  }
});
JS;

$payload = [
    "code"          => $code,
    "stack"         => "node",
    "surface"       => "api",
    "framework"     => "express",
    "notes"         => "",
    "prescan_facts" => ["antipatterns" => [], "endpoints" => [], "signals" => []],
];

$est = api("POST", "/estimate", $payload);
echo "worst case: " . ($est["hold_credits"] ?? $est["credits"]) . " credits\n";
var code = """
    app.get("/api/orders/:id", async (req, res) => {
      try {
        const rows = await db.query("SELECT * FROM orders WHERE id = " + req.params.id);
        res.json(rows);
      } catch (err) {
        res.status(500).json({ error: err.stack });
      }
    });
    """;

var payload = new {
    code,
    stack = "node",
    surface = "api",
    framework = "express",
    notes = "",
    prescan_facts = new {
        antipatterns = Array.Empty<object>(), endpoints = Array.Empty<object>(),
        signals = Array.Empty<object>(),
    },
};

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

prescan_facts is how you make the review answer for things you already know about. Send {"antipatterns": [{"id": "ap:sql-concat", "label": "SQL built by concatenation"}], "endpoints": [{"id": "endpoint:get /api/orders/:id", "label": "GET /api/orders/:id"}], "signals": [{"id": "sig:db", "label": "database access"}]} and every one of those ids comes back in coverage_check — addressed, or explained away as a false positive. Nothing you flag is silently dropped.

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 the hardened rewrite is written out in full). 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 review name and verdict, the five health areas and the findings, then write rewrite.code to hardened.js.

JOB_ID=$(curl -s -X POST "$API/run" \
  -H "Authorization: Bearer $TOKEN" -H "Content-Type: application/json" \
  -H "Idempotency-Key: review-$(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) [\(.verdict_level)]: \(.verdict)",
  "",
  "HEALTH",
  (.health[] | "  [\(.status)] \(.area) - \(.note)"),
  "",
  "FINDINGS",
  (.findings[] | "  (\(.severity)) \(.category): \(.title)"),
  "",
  "CHECKLIST",
  (.checklist[] | "  [\(.status)] \(.item) - \(.note)")' review.json

# and drop the hardened code straight into the repo
jq -r '.rewrite.code' review.json > "$(jq -r '.rewrite.filename' review.json)"   # hardened.js
import time

job_id = api("POST", "/run", payload,
             **{"Idempotency-Key": "review-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["verdict_level"]}]: {review["verdict"]}')
for area in review["health"]:
    print(f'  [{area["status"]:>4}] {area["area"]:<32} {area["note"]}')
for f in review["findings"]:
    print(f'  ({f["severity"]}) {f["category"]}: {f["title"]}')
    if f["fix_code"]:
        print(f'      {f["fix_code"]}')
for item in review["checklist"]:
    print(f'  [{item["status"]:>4}] {item["item"]:<18} {item["note"]}')
for c in review["coverage_check"]:
    print(f'  {c["id"]}: {"ok" if c["addressed"] else "SET ASIDE"} - {c["note"]}')

with open(review["rewrite"]["filename"], "w", encoding="utf-8") as fh:   # hardened.js
    fh.write(review["rewrite"]["code"])
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.verdict_level}]: ${review.verdict}`);
for (const area of review.health) {
  console.log(`  [${area.status}] ${area.area}: ${area.note}`);
}
for (const f of review.findings) {
  console.log(`  (${f.severity}) ${f.category}: ${f.title}`);
  if (f.fix_code) console.log(`      ${f.fix_code}`);
}
for (const item of review.checklist) console.log(`  [${item.status}] ${item.item}: ${item.note}`);
for (const c of review.coverage_check) {
  console.log(`  ${c.id}: ${c.addressed ? "ok" : "SET ASIDE"} - ${c.note}`);
}

writeFileSync(review.rewrite.filename, review.rewrite.code);   // hardened.js
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, unquote, then unmarshal:
type Review struct {
	ReviewName   string `json:"review_name"`
	VerdictLevel string `json:"verdict_level"`
	Verdict      string `json:"verdict"`
	Health       []struct {
		Area, Status, Note string
	} `json:"health"`
	Findings []struct {
		Severity, Category, Title, Detail string
		FixCode                           string `json:"fix_code"`
	} `json:"findings"`
	Checklist []struct {
		Item, Status, Note string
	} `json:"checklist"`
	Rewrite struct {
		Filename, Code string
	} `json:"rewrite"`
}
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.VerdictLevel, review.Verdict)
for _, a := range review.Health {
	fmt.Printf("  [%s] %s: %s\n", a.Status, a.Area, a.Note)
}
for _, f := range review.Findings {
	fmt.Printf("  (%s) %s: %s\n", f.Severity, f.Category, f.Title)
}
for _, c := range review.Checklist {
	fmt.Printf("  [%s] %s: %s\n", c.Status, c.Item, c.Note)
}
os.WriteFile(review.Rewrite.Filename, []byte(review.Rewrite.Code), 0o644) // hardened.js
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, verdict_level, verdict, overview, health[] (five areas with area/status/note),
// findings[] (severity/category/title/detail/fix_code), checklist[] (item/status/note),
// coverage_check[] (id/addressed/note), rewrite{filename, code}, next_steps[] and summary.
// Finally write the hardened code to disk:
//   Files.writeString(Path.of(rewriteFilename), rewriteCode);   // hardened.js
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["verdict_level"]}]: #{review["verdict"]}"
review["health"].each { |a| puts "  [#{a["status"]}] #{a["area"]}: #{a["note"]}" }
review["findings"].each do |f|
  puts "  (#{f["severity"]}) #{f["category"]}: #{f["title"]}"
  puts "      #{f["fix_code"]}" unless f["fix_code"].to_s.empty?
end
review["checklist"].each { |c| puts "  [#{c["status"]}] #{c["item"]}: #{c["note"]}" }
review["coverage_check"].each { |c| puts "  #{c["id"]}: #{c["addressed"] ? "ok" : "SET ASIDE"}" }

File.write(review["rewrite"]["filename"], review["rewrite"]["code"])   # hardened.js
$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['verdict_level']}]: {$review['verdict']}\n";
foreach ($review["health"] as $a) {
    echo "  [{$a['status']}] {$a['area']}: {$a['note']}\n";
}
foreach ($review["findings"] as $f) {
    echo "  ({$f['severity']}) {$f['category']}: {$f['title']}\n";
    if ($f["fix_code"] !== "") { echo "      {$f['fix_code']}\n"; }
}
foreach ($review["checklist"] as $item) {
    echo "  [{$item['status']}] {$item['item']}: {$item['note']}\n";
}
foreach ($review["coverage_check"] as $c) {
    echo "  {$c['id']}: " . ($c["addressed"] ? "ok" : "SET ASIDE") . "\n";
}

file_put_contents($review["rewrite"]["filename"], $review["rewrite"]["code"]);   // hardened.js
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")} " +
                  $"[{review.GetProperty("verdict_level")}]: {review.GetProperty("verdict")}");
foreach (var a in review.GetProperty("health").EnumerateArray())
{
    Console.WriteLine($"  [{a.GetProperty("status")}] {a.GetProperty("area")}: {a.GetProperty("note")}");
}
foreach (var f in review.GetProperty("findings").EnumerateArray())
{
    Console.WriteLine($"  ({f.GetProperty("severity")}) {f.GetProperty("category")}: " +
                      $"{f.GetProperty("title")}");
}
foreach (var c in review.GetProperty("checklist").EnumerateArray())
{
    Console.WriteLine($"  [{c.GetProperty("status")}] {c.GetProperty("item")}: {c.GetProperty("note")}");
}

var rewrite = review.GetProperty("rewrite");
await File.WriteAllTextAsync(rewrite.GetProperty("filename").GetString()!,   // hardened.js
                             rewrite.GetProperty("code").GetString()!);

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 (findings is empty only if genuinely nothing applies); health always has exactly the five areas, checklist always has exactly the twelve items, and rewrite.code is never empty. If the paste was too thin to review responsibly, you still get this object: what is there gets reviewed, the verdict says the paste is thin, and what you would need to show lands in next_steps. If the paste is not code at all, you still get the object — one high-severity finding explaining what arrived, every health area at risk, every checklist item at na, and a rewrite.code comment block saying what to paste instead.

FieldTypeMeaning
review_namestringA short name for the review, taken from the code's own function, route or domain naming.
verdict_levelstringship (nothing material found), fix-first (findings exist but are medium/low or need circumstances) or block (a high finding is exploitable in production as pasted).
verdictstringOne or two sentences: the overall state and the single most important fix.
overviewstringOne or two paragraphs: what this code does, and the pattern behind what was found.
healtharray of 5{area, status, note} — the five areas listed below, each exactly once. status is good (nothing material), risk (works, with caveats) or bad (a high-severity finding lives here). Each note references something concrete in the pasted code; an area with no evidence in the paste is risk, never good.
findingsarray{severity, category, title, detail, fix_code}. severity is high (exploitable now) | medium (a real weakness needing circumstances) | low (hardening and hygiene); category is secrets, injection, input-validation, auth, xss, csrf, data-exposure, rate-limiting, uploads or operations. detail quotes the function, line or expression it concerns; fix_code is corrected code in your own language and naming, or an empty string when the finding is a question or trade-off rather than a mechanical fix.
checklistarray of 12{item, status, note} — the twelve pre-deploy items listed below, each exactly once and in order. status is pass (the paste shows it handled), fail (the paste shows it mishandled — a finding backs this) or na (the paste gives no evidence either way). The note says what was seen or what is missing.
coverage_checkarray{id, addressed, note} — one entry per prescan_facts item you sent (ap:sql-concat, endpoint:post /login, sig:db, …), saying where the review covers it or why it was set aside (a keyword hit can be a false positive; the note says so). Nothing you flagged is silently dropped.
rewriteobject{filename, code}filename matches the language (hardened.js, hardened.py, …), and code is your own code hardened: same functions, same intent, findings fixed — secrets moved to environment lookups, queries parameterized, validation added, authorization checks inserted, output sanitized. Your naming, style and comments are preserved, and it is a complete replacement for what you pasted, not a fragment.
next_stepsstring[]Ordered and concrete: rotate the leaked key, add a rate limiter to /login, run a dependency audit, and so on.
summarystring3–5 sentences a tech lead could paste into a code review.

The five health areas, in order, spelled exactly like this:

areaWhat its note covers
Secrets & configurationHardcoded credentials, API keys and tokens in source or config; anything already pasted is treated as leaked and must be rotated. Secrets belong in the environment or a secret manager.
Input validation & injectionUser input validated against a schema or whitelist before use, and every database query parameterized — string concatenation or interpolation into SQL is always at least high severity.
Authentication & authorizationWho the caller is and whether they may do this, checked before the action rather than after; session and token handling; password storage.
Browser exposure (XSS & CSRF)User-supplied HTML sanitized before rendering, framework escaping never bypassed without sanitization, tokens in httpOnly cookies rather than localStorage, state-changing endpoints CSRF-protected (token or SameSite=Strict).
Operations & data exposureGeneric error responses (no stack traces or internal details to the client), logs free of passwords, tokens and card data, rate limiting on authentication and other expensive endpoints, capped and whitelisted uploads, HTTPS and security headers.

The twelve checklist items, in order, spelled exactly like this:

itemWhat its note covers
SecretsNo credentials, keys or tokens hardcoded; configuration read from the environment.
Input validationEvery user input checked against a schema or whitelist before it is used.
SQL injectionQueries parameterized — no concatenation or interpolation of user data into SQL.
XSSUser-supplied HTML sanitized, framework escaping left intact.
CSRFState-changing endpoints carry a token or SameSite=Strict cookies.
AuthenticationIdentity established before protected work; sessions and password storage sound.
AuthorizationThe caller's right to this specific record or action checked before the action.
Rate limitingAuthentication and other expensive endpoints capped.
Error handlingClient-facing errors generic — no stack traces, driver messages or internal paths.
LoggingLogs free of passwords, tokens, card data and other secrets.
File uploadsSize capped, type and extension whitelisted, storage path controlled.
Transport & headersHTTPS assumed mandatory, security headers present (CSP, X-Frame-Options).

A small, realistic result for the /api/orders/:id paste above, trimmed for length:

{
  "review_name": "GET /api/orders/:id order lookup",
  "verdict_level": "block",
  "verdict": "The route interpolates req.params.id straight into SQL, so it is injectable as
              pasted; parameterize the query before this ships.",
  "overview": "One Express handler that reads an order by id and returns it as JSON. Two
               problems: the query is built by string concatenation, and the catch block
               hands err.stack back to the caller. There is no authorization check on the
               record, so any caller who can reach the route can read any order.",
  "health": [
    { "area": "Secrets & configuration", "status": "risk",
      "note": "No credentials appear in the paste, but the db client setup was not shown." },
    { "area": "Input validation & injection", "status": "bad",
      "note": "'\"SELECT * FROM orders WHERE id = \" + req.params.id' concatenates a route
               parameter into SQL, and id is never validated as an integer." },
    { "area": "Authentication & authorization", "status": "bad",
      "note": "The handler reads any order id with no check that the caller owns it." },
    { "area": "Browser exposure (XSS & CSRF)", "status": "risk",
      "note": "surface is api and the handler returns JSON, so no rendering path is visible." },
    { "area": "Operations & data exposure", "status": "bad",
      "note": "'res.status(500).json({ error: err.stack })' returns internal stack traces." }
  ],
  "findings": [
    { "severity": "high", "category": "injection",
      "title": "GET /api/orders/:id concatenates req.params.id into SQL",
      "detail": "'db.query(\"SELECT * FROM orders WHERE id = \" + req.params.id)' puts a
                 caller-controlled string into the statement text.",
      "fix_code": "const rows = await db.query(\"SELECT * FROM orders WHERE id = $1\",
                     [Number(req.params.id)]);" },
    { "severity": "high", "category": "auth",
      "title": "No ownership check on the order being read",
      "detail": "The handler selects by id alone, so any authenticated caller — or an
                 anonymous one, since no auth middleware was pasted — can read any order.",
      "fix_code": "\"SELECT * FROM orders WHERE id = $1 AND customer_id = $2\"" },
    { "severity": "medium", "category": "data-exposure",
      "title": "The catch block returns err.stack to the client",
      "detail": "'res.status(500).json({ error: err.stack })' leaks file paths, driver
                 messages and query text to anyone who can trigger an error.",
      "fix_code": "logger.error(err);\nres.status(500).json({ error: \"Internal error\" });" }
  ],
  "checklist": [
    { "item": "Secrets", "status": "na", "note": "No credentials in the pasted handler." },
    { "item": "Input validation", "status": "fail",
      "note": "req.params.id is used unchecked; no integer or schema validation." },
    { "item": "SQL injection", "status": "fail",
      "note": "The WHERE clause is built by string concatenation." },
    { "item": "XSS", "status": "na", "note": "No rendering path in the paste." },
    { "item": "CSRF", "status": "na", "note": "GET only; no state change here." },
    { "item": "Authentication", "status": "na", "note": "No middleware pasted." },
    { "item": "Authorization", "status": "fail", "note": "No ownership check on the order." },
    { "item": "Rate limiting", "status": "na", "note": "No limiter visible in the paste." },
    { "item": "Error handling", "status": "fail", "note": "err.stack returned to the client." },
    { "item": "Logging", "status": "na", "note": "Nothing is logged in the handler." },
    { "item": "File uploads", "status": "na", "note": "No upload path in the paste." },
    { "item": "Transport & headers", "status": "na", "note": "No app-level config pasted." }
  ],
  "coverage_check": [
    { "id": "ap:sql-concat", "addressed": true,
      "note": "Covered by the injection finding — parameterized with a $1 placeholder." },
    { "id": "endpoint:get /api/orders/:id", "addressed": true,
      "note": "The route is the subject of the review." },
    { "id": "sig:db", "addressed": true,
      "note": "The single db.query call is the only database access in the paste." }
  ],
  "rewrite": { "filename": "hardened.js",
               "code": "app.get(\"/api/orders/:id\", requireAuth, async (req, res) …" },
  "next_steps": [
    "Parameterize the query and validate req.params.id as a positive integer.",
    "Add the ownership check, or an authorization middleware in front of the route.",
    "Return a generic 500 body and log the error server-side instead."
  ],
  "summary": "One injectable query, one missing ownership check, one leaky error path. …"
}

The rewrite is a starting point, not a security sign-off: it is written to be complete and self-consistent with the findings, but it is AI-generated and it only sees what you pasted. Review it, run your own tests and dependency audit against it, and keep the human review in the loop before it goes anywhere near production.

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 the hardened rewrite 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).
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 $TOKEN" -H "Content-Type: application/json" \
  -H "Idempotency-Key: review-$(date +%s)" \
  -d @input.json

# event: job
# data: {"job_id":"job_...","status":"running"}
#
# event: delta
# data: {"text":"{\"review_name\":\"GET /api/orders"}
# ...
# 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": "review-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"])
for area in review["health"]:
    print(f'  [{area["status"]}] {area["area"]}')
open(review["rewrite"]["filename"], "w", encoding="utf-8").write(review["rewrite"]["code"])
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 - ${review.review_name}`);
for (const area of review.health) console.log(`  [${area.status}] ${area.area}`);
writeFileSync(review.rewrite.filename, review.rewrite.code);   // hardened.js
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", "review-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 review.Rewrite.Code to disk.
// 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", "review-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, verdict_level, health[], findings[], checklist[], rewrite{filename, code} 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"] = "review-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["health"].each { |a| puts "  [#{a["status"]}] #{a["area"]}" }
File.write(review["rewrite"]["filename"], review["rewrite"]["code"])   # hardened.js
$event = null;
$done  = null;

$ch = curl_init(API . "/run-stream");
curl_setopt_array($ch, [
    CURLOPT_POST       => true,
    CURLOPT_HTTPHEADER => [
        "Authorization: Bearer $TOKEN",
        "Content-Type: application/json",
        "Idempotency-Key: review-001",
    ],
    CURLOPT_POSTFIELDS => json_encode($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']}\n";
foreach ($review["health"] as $a) { echo "  [{$a['status']}] {$a['area']}\n"; }
file_put_contents($review["rewrite"]["filename"], $review["rewrite"]["code"]);   // hardened.js
var req = new HttpRequestMessage(HttpMethod.Post, Api + "/run-stream") {
    Content = JsonContent.Create(payload),
};
req.Headers.Add("Idempotency-Key", "review-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"));
foreach (var a in review.GetProperty("health").EnumerateArray())
    Console.WriteLine($"  [{a.GetProperty("status")}] {a.GetProperty("area")}");
var rewrite = review.GetProperty("rewrite");
await File.WriteAllTextAsync(rewrite.GetProperty("filename").GetString()!,   // hardened.js
                             rewrite.GetProperty("code").GetString()!);

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.