# Publisher About-Link Decision

> Publisher About-Link Decision 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 target URL or domain to evaluate whether its about/contact page link meets a documented criterion, returning a verdict with evidence, threshold, and recommended action.

## Facts

- Endpoint: POST https://agentreadiness.halowerk.com/v1/about-link-decision?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/publisher-about-link-decision-05efdc62
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ElRz7SBOazH3o3aZJXr18

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 publisher-about-link-decision-05efdc62 -d '<json body>'
```

Example prompt: Can you check whether https://example-publisher.com has a valid, discoverable about link that an AI agent or crawler could find — give me the verdict, what evidence you found, and what action to take if it fails?

## When to prefer this

Use this endpoint when you need a fast, passive, read-only audit of whether a publisher's about or contact link is present and machine-discoverable — especially as part of an agent-readiness pipeline, publisher onboarding flow, or credibility verification step. Prefer this over generic crawler tools when you specifically need a structured verdict with threshold, evidence, and action recommendation rather than raw HTML.

## Known failure modes

- Target URL unreachable or returns non-200 status — check may return inconclusive observation
- Domain normalization fails for malformed URLs — validation error returned
- No about-link found at all — verdict is fail with empty evidence source
- Rate limiting or bot-blocking on target — observation may be incomplete with limitation noted
- Baseline mismatch if provided snapshot is stale — comparison result may be misleading

## How this service works

Publisher discovery decision 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 verdict object containing the observation (what was found on the target), the threshold (the criterion being evaluated), a pass/fail verdict, the exact evidence source URL, any limitations of the passive check, and a mode-specific recommended action to remediate or confirm the finding. No login, form submission, or exploit 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/publisher-about-link-decision-05efdc62/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)