# About Link Audit – Agent Readiness by Halowerk

> About Link Audit – Agent Readiness by Halowerk is a paid API for AI agents from agentreadiness.halowerk.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-14).

Passively audits a public URL or domain to evaluate whether its 'About' page link is discoverable, documented, and meets agent-readiness criteria, returning a verdict, evidence source, and recommended action.

## Facts

- Endpoint: POST https://agentreadiness.halowerk.com/v1/about-link-audit?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/about-link-audit-agent-readiness-by-halowerk-cd12de29
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_5Om5mTHLJ4KEdBb_684fo

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 about-link-audit-agent-readiness-by-halowerk-cd12de29 -d '<json body>'
```

Example prompt: Can you run a passive about-link audit on https://example.com and tell me whether their About page link is discoverable and meets agent-readiness standards — include the verdict, the exact evidence source, and any recommended action?

## When to prefer this

Use this endpoint when you need a lightweight, passive, zero-risk check of whether a publisher's About link is present and agent-readable — without any login, form submission, or active probing. Prefer it over generic site crawlers when you specifically need a structured verdict with evidence source and remediation guidance aligned to AI agent readiness standards.

## Known failure modes

- Target URL is unreachable or returns a non-200 status, resulting in an inconclusive or error verdict
- Domain cannot be normalized to a valid HTTPS URL, causing a validation error
- About link is behind authentication or JavaScript rendering, limiting passive detection
- Rate limiting or bot-blocking on the target may prevent evidence collection
- Baseline comparison fails if the previous snapshot schema is incompatible

## How this service works

Publisher discovery audit fetches current public evidence from the supplied target and evaluates the documented criterion. It returns the observation, threshold, verdict, exact evidence source, limitations and a mode-specific action. The check is passive: no login attempt, payload injection, exploit, purchase, form submission or load test is performed.

## Output

Returns a structured result containing: the observation (what was found on the target), the threshold (the criterion being evaluated), a verdict (pass/fail/warn), the exact evidence source (URL or element), any limitations of the passive check, and a mode-specific recommended action to remediate or confirm compliance.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "target": {
   "type": "string",
   "maxLength": 2048,
   "minLength": 3,
   "description": "Public HTTP(S) URL or domain to inspect. A bare domain is normalized to HTTPS."
  },
  "context": {
   "type": "object",
   "description": "Optional non-secret correlation labels returned unchanged only in the request lifecycle.",
   "maxProperties": 12,
   "additionalProperties": {
    "type": [
     "string",
     "number",
     "boolean",
     "null"
    ]
   }
  },
  "baseline": {
   "type": [
    "object",
    "null"
   ],
   "description": "Optional baseline returned by a previous snapshot call.",
   "additionalProperties": true
  },
  "compare_url": {
   "type": "string",
   "maxLength": 2048,
   "minLength": 3,
   "description": "Optional public comparison URL. Used by change and monitoring services."
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/about-link-audit-agent-readiness-by-halowerk-cd12de29/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agentreadiness.halowerk.com](https://www.zero.xyz/host/agentreadiness.halowerk.com/llms.txt)