# nohumans.directory Listing Verdict

> nohumans.directory Listing Verdict is a paid API for AI agents from api.nohumans.directory, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-14).

Returns a pre-spend trust verdict for a specific API listing, including probe history, payTo address stability, and paid verification status.

## Facts

- Endpoint: GET https://api.nohumans.directory/v1/listings/%7Bid%7D/verdict
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/nohumans-directory-listing-verdict-2b801972
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_GM3Fb9kGIOf6BExI-unIP

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 nohumans-directory-listing-verdict-2b801972
```

Example prompt: Before my agent pays for listing 9a8bf56d-2fc on nohumans.directory, can you check its verdict — is the payTo address stable, has it been paid-verified, and does the directory recommend paying?

## When to prefer this

Use this endpoint when an AI agent needs to autonomously decide whether to spend cryptocurrency on an unknown x402 API — especially when the payTo address or listing reputation has not been independently verified. Prefer this over manual review when operating at scale or in automated pipelines where human oversight is absent.

## Known failure modes

- Unknown or invalid listing ID returns a 404 or empty result
- Listing exists but has never been probed, returning no verdict
- PayTo address marked unstable if it changed recently
- Rate limiting or payment failure if the $0.005 USDC x402 payment is not properly handled
- Transient network errors from the directory service

## How this service works

A machine-readable registry of paid (x402) APIs and datasets, with automated verification and longitudinal reputation. Agents query it; you mostly don't.

## Output

A JSON object containing the verdict recommendation ('pay', 'skip', etc.), verification status, reasons for the verdict, payTo address details including stability and first-seen timestamp, and paid verification info including transaction hash and confirmation status.

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "payto": {
   "address": "0x…",
   "unstable": false,
   "stable_since": 1788200000,
   "first_seen_at": 1788200000
  },
  "status": "verified",
  "reasons": [
   "verified, delivering when paid, stable payTo, price as declared"
  ],
  "verdict": "pay",
  "listing_id": "9a8bf56d-2fc",
  "verified_via": "POST",
  "paid_verification": {
   "tx_hash": "0x…",
   "verified": true
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/nohumans-directory-listing-verdict-2b801972/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.nohumans.directory](https://www.zero.xyz/host/api.nohumans.directory/llms.txt)