# GPT-5.5 Code Review via x402

> GPT-5.5 Code Review via x402 is a paid API for AI agents from gpt55.558686.xyz, paid per call via x402, $0.00293/call, status unknown (last checked 2026-09-15).

Performs AI-powered code review on submitted source code, returning concise findings and suggestions, billed per-call in USDC via x402 on Base.

## Facts

- Endpoint: POST https://gpt55.558686.xyz/v1/tools/code-review
- Price: $0.00293/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/gpt-5-5-code-review-via-x402-80bbd6ab
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_zZyNnaOJ21Wnp_4Ty0FMU

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-code-review-via-x402-80bbd6ab -d '<json body>'
```

Example prompt: Can you do a code review on this Python function I wrote — focus on security issues, and keep the response under 500 tokens: def login(user, pwd): return db.query(f'SELECT * FROM users WHERE user={user} AND pwd={pwd}')

## When to prefer this

Choose this endpoint when you need on-demand, pay-per-call code review without a subscription, especially for agents that review code infrequently or need cost control. Prefer over subscription-based code review APIs when handling variable workloads billed per review. Use when you want GPT-5.5 quality analysis with micro-payment pricing in USDC on Base.

## Known failure modes

- Code exceeds 700,000 character limit — request rejected
- max_tokens out of range 1-4096 — validation error
- temperature out of range 0-2 — validation error
- Missing required 'code' field — 400 error
- x402 payment failure or insufficient USDC balance — 402 response
- Model unavailable or upstream GPT-5.5 outage — 5xx error

## How this service works

Review a short code snippet or diff for bugs, edge cases, security issues, maintainability, and missing tests. Designed for agents and developers that need a quick second pass before merging. Pay up to $0.003 per request with x402 USDC on Base. Public paid calls are limited to 1500 input characters and 128 output tokens.

## Output

Returns a JSON object with a 'text' field containing concise code review findings, bug reports, improvement suggestions, and quality observations about the submitted code.

## 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
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "text": "Concise code review findings."
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/gpt-5-5-code-review-via-x402-80bbd6ab/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)