# GPT-5.5 Pro Code Review

> GPT-5.5 Pro 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 deep professional-grade code review covering security vulnerabilities, architecture quality, test coverage, and actionable patch suggestions using GPT-5.5.

## Facts

- Endpoint: POST https://gpt55.558686.xyz/v1/tools/code-review/pro
- 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-pro-code-review-f2233ba7
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_zKka4-gZKZhD3B_HKHvJ4

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-pro-code-review-f2233ba7 -d '<json body>'
```

Example prompt: Can you do a deep professional code review of this Python authentication module — focus on security vulnerabilities and architecture issues, and give me concrete patch suggestions? Here's the code: [paste code here].

## When to prefer this

Choose this endpoint when you need thorough, professional-grade code review that goes beyond quick triage — specifically when security auditing, architectural assessment, test gap analysis, and actionable patch suggestions are all required. Prefer this over the standard or mini tiers when code quality stakes are high (e.g., pre-release, security-sensitive systems, or production infrastructure). Best for codebases up to 700,000 characters where GPT-5.5's full capability is warranted and the $0.211 per-call cost is acceptable.

## Known failure modes

- Code input exceeds 700,000 character limit — request rejected
- Missing required 'code' field — validation error
- Payment of $0.211 USDC not authorized via x402 — 402 Payment Required
- Invalid language or focus parameter format — may degrade review quality
- Temperature or max_tokens out of allowed range — parameter validation error

## How this service works

Deeper code review for security, architecture, tests, and patch suggestions. 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 detailed professional code review covering security vulnerabilities, architectural concerns, missing or inadequate tests, and specific patch suggestions, returned as text up to 4096 tokens from GPT-5.5.

## 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-pro-code-review-f2233ba7/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)