# GPT-5.5 Professional Code Review

> GPT-5.5 Professional Code Review is a paid API for AI agents from gpt55.558686.xyz, paid per call via x402, $0.211/call, status unknown (last checked 2026-09-16).

Performs professional-grade AI code review covering security vulnerabilities, architecture, test coverage, and production risk using GPT-5.5

## Facts

- Endpoint: POST https://gpt55.558686.xyz/v1/tools/code-review/professional
- Price: $0.211/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/gpt-5-5-professional-code-review-11465845
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_rnGi7aaMXu_qXCmxmGj-s

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability gpt-5-5-professional-code-review-11465845 -d '<json body>'
```

Example prompt: Can you do a professional code review of this JavaScript authentication module — focus on security vulnerabilities and production risk, and give me up to 4096 tokens of detailed feedback?

## When to prefer this

Choose this endpoint when you need a thorough, professional-tier code review that goes beyond syntax checking — specifically when security auditing, architectural assessment, test coverage evaluation, or production readiness are the priority. Prefer this over cheaper tiers when code quality stakes are high (pre-deployment, security-sensitive code, or mission-critical systems). It uses GPT-5.5 at the professional model tier, making it more capable than standard or basic review endpoints on the same host.

## Known failure modes

- Input code exceeds 700,000 character limit — returns 400 or truncation error
- Payment of $0.211 USDC on Base not authorized — returns 402 Payment Required
- Invalid language or focus parameters — may degrade review quality
- Temperature out of range [0,2] — returns validation error
- max_tokens exceeds 4096 — returns validation error
- Upstream GPT-5.5 model unavailable — returns 503 or timeout

## How this service works

Professional code review for security, architecture, tests, and production risk. Model tier: professional; upstream model: gpt-5.5. Price is derived from official OpenAI relative token costs with a local margin and floor. Pay up to $0.211 per request with x402 USDC on Base. Public paid calls are limited to 700000 input characters and 4096 output tokens.

## Output

A structured professional code review report covering security vulnerabilities, architectural concerns, test coverage gaps, and production risk assessments, generated by GPT-5.5 with up to 4096 output tokens

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "code": {
   "type": "string",
   "maxLength": 700000,
   "minLength": 1
  },
  "focus": {
   "type": "string"
  },
  "language": {
   "type": "string"
  },
  "max_tokens": {
   "type": "integer",
   "maximum": 4096,
   "minimum": 1
  },
  "temperature": {
   "type": "number",
   "maximum": 2,
   "minimum": 0
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/gpt-5-5-professional-code-review-11465845/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from gpt55.558686.xyz](https://www.zero.xyz/host/gpt55.558686.xyz/llms.txt)