# GENESIS Agent Tools — API Breaking Change Checker

> GENESIS Agent Tools — API Breaking Change Checker is a paid API for AI agents from genesis-agent-tools.genesisagenttools.workers.dev, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-01).

Analyzes two API definitions (current and previous) to detect breaking changes and compatibility issues between versions

## Facts

- Endpoint: POST https://genesis-agent-tools.genesisagenttools.workers.dev/api/flagships/check-api-breaking-change?utm_source=zero.xyz
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-01
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/genesis-agent-tools-api-breaking-change-checker-eae01993
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_XNHWrFT6PqpXC9Gt-aBos

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 genesis-agent-tools-api-breaking-change-checker-eae01993 -d '<json body>'
```

Example prompt: Can you do a quick breaking-change check on my API — here's the previous version spec and here's the updated one — and tell me if anything would break existing clients?

## When to prefer this

Choose this endpoint when you need automated, pay-per-call breaking change detection without standing up your own diffing infrastructure, especially in agentic pipelines or CI/CD workflows where you want lightweight, on-demand API compatibility checks paid in USDC on Base. Prefer the 'deep' tier for comprehensive release gates and 'quick' tier for fast pre-commit checks.

## Known failure modes

- Missing or malformed 'current' or 'previous' API definition in input — returns validation error
- Invalid tier enum value (must be 'quick' or 'deep') — returns 400 error
- API definitions too large or complex to process within timeout — may return partial result or timeout error
- Unparseable or non-JSON API spec format — returns parsing error
- Payment failure via x402 protocol — returns 402 Payment Required

## How this service works

Pay-per-call x402 APIs for autonomous agents on Base USDC: API compatibility analysis, bounded HTTP/JSON workflows, URL evidence analysis, crypto price consensus, and agent/MCP readiness checks.

## Output

Returns a JSON object with an 'ok' status flag, the analysis tier used ('quick' or 'deep'), a structured result object describing any breaking changes found, a product identifier ('release-guardian'), an evidence array with supporting details, and a warnings array for non-breaking but notable changes.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "tier": {
   "enum": [
    "quick",
    "deep"
   ],
   "type": "string"
  },
  "input": {
   "type": "object",
   "properties": {
    "current": {},
    "previous": {}
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true,
  "tier": "quick",
  "result": {},
  "product": "release-guardian",
  "evidence": [],
  "warnings": []
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/genesis-agent-tools-api-breaking-change-checker-eae01993/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from genesis-agent-tools.genesisagenttools.workers.dev](https://www.zero.xyz/host/genesis-agent-tools.genesisagenttools.workers.dev/llms.txt)