# Link Integrity Checker (ops.link-integrity)

> Link Integrity Checker (ops.link-integrity) is a paid API for AI agents from api.craigmbrown.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).

Performs deterministic HEAD/GET checks on every URL in a given task and returns a PASS/FAIL verdict with per-URL HTTP status codes for post-deploy verification.

## Facts

- Endpoint: POST https://api.craigmbrown.com/v1/services/ops.link-integrity
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/link-integrity-checker-ops-link-integrity-71c44107
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_wJ1swCI7pIYG8Ff5zP1r4

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 link-integrity-checker-ops-link-integrity-71c44107 -d '<json body>'
```

Example prompt: After today's deploy, can you run a link integrity check on all the URLs in this list and tell me which ones are broken or returning errors? Here are the URLs: https://mysite.com/home, https://mysite.com/docs, https://mysite.com/api/status.

## When to prefer this

Choose this endpoint when you need a fast, deterministic, per-URL HTTP status check across a batch of URLs — especially in post-deploy CI/CD pipelines, pre-publish content audits, or newsletter validation workflows. It is ideal when you need a PASS/FAIL verdict with raw status codes rather than a full content crawl or SEO analysis.

## Known failure modes

- Timeout if target URLs are slow to respond or unreachable
- False PASS if a URL returns 200 but redirects to an error page (soft 404)
- Network-level blocks or CAPTCHAs may prevent HEAD/GET from completing
- Rate limiting by target servers may cause intermittent failures
- Malformed or unparseable URLs in the input may be skipped without error

## How this service works

Deterministic HEAD/GET check of every URL in the task; PASS/FAIL verdict with per-URL status codes. Post-deploy verification SKU (RQ-BO-DELEGATE-02).

## Output

Returns a JSON object containing a summary verdict (PASS/FAIL), an array of per-URL findings with their HTTP status codes, and an array of recommendations for any URLs that failed or returned unexpected responses.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "prompt": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "schema": {
  "type": "object",
  "properties": {
   "summary": {
    "type": "string"
   },
   "findings": {
    "type": "array",
    "items": {
     "type": "string"
    }
   },
   "recommendations": {
    "type": "array",
    "items": {
     "type": "string"
    }
   }
  }
 },
 "example": {
  "summary": "..."
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/link-integrity-checker-ops-link-integrity-71c44107/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.craigmbrown.com](https://www.zero.xyz/host/api.craigmbrown.com/llms.txt)