# Footer Semantics Audit

> Footer Semantics Audit 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 inspects a public URL's footer and evaluates its semantic structure, returning an observation, verdict, evidence source, and recommended action.

## Facts

- Endpoint: POST https://agentreadiness.halowerk.com/v1/footer-semantics-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/footer-semantics-audit-7fdfa9a8
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_6eoaOikimtEs3OISKb5SP

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 footer-semantics-audit-7fdfa9a8 -d '<json body>'
```

Example prompt: Can you run a footer semantics audit on example.com and tell me whether the footer passes, what evidence was found, and what I should fix?

## When to prefer this

Choose this endpoint when you need a passive, non-invasive semantic audit of a public website's footer for AI agent readiness or discoverability signals. It is ideal for pre-launch compliance checks, ongoing monitoring pipelines, or benchmarking against a baseline or comparison URL. Prefer it over general SEO crawlers when the specific concern is footer-level semantic structure as evaluated against agent-readiness criteria rather than broad site health.

## Known failure modes

- Target URL is unreachable or returns non-200 status — audit cannot proceed
- Target requires authentication — passive check cannot access gated content
- Footer content is rendered only via JavaScript and not available in static HTML — evidence may be incomplete
- Malformed or overly short target URL fails schema validation (minLength:3)
- Rate limiting or blocking by the target server prevents fetching

## How this service works

Footer semantics 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 report containing: the observed footer state, the evaluated criterion, a pass/fail verdict against a defined threshold, the exact public evidence source used, any limitations of the passive check, and a mode-specific recommended action — no login, injection, or intrusive testing is performed.

## 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/footer-semantics-audit-7fdfa9a8/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)