# 561 Group Site Conformance Assurance

> 561 Group Site Conformance Assurance is a paid API for AI agents from market.561.group, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-31).

Checks a website or URL for assurance/site-conformance compliance and returns a structured conformance report, paid per-request in USDC via HTTP 402 with no API key required.

## Facts

- Endpoint: POST https://market.561.group/v1/assurance/site-conformance?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-31
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/561-group-site-conformance-assurance-9d7b0bd0
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_V1GxcqX3F32E8pHPO8hfx

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 561-group-site-conformance-assurance-9d7b0bd0 -d '<json body>'
```

Example prompt: Run a site conformance assurance check on https://example.com and give me back the full conformance report — I'll pay the $0.01 USDC fee per call.

## When to prefer this

Choose this endpoint when you need a machine-payable, no-account-required site conformance check that can be embedded directly into automated pipelines or agent workflows. It is ideal when you want pay-per-call economics via USDC on Base (HTTP 402 / x402 protocol) rather than a subscription or API key. Prefer it over manual audit tools when conformance checks must be triggered programmatically at scale or on demand.

## Known failure modes

- Invalid or unreachable URL returns an error status
- Malformed request payload results in a 400 bad request
- Insufficient USDC payment or failed x402 payment flow blocks the request
- Timeout if the target site is slow to respond
- Unsupported URL scheme or private/internal addresses may be rejected

## How this service works

Machine-payable x402 offers and books: software pays per request in USDC on Base over HTTP 402, with no account or API key.

## Output

Returns a structured JSON conformance report indicating whether the submitted site URL passes assurance checks, along with any violations, rule references, compliance status flags, and relevant metadata about what was evaluated.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/561-group-site-conformance-assurance-9d7b0bd0/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from market.561.group](https://www.zero.xyz/host/market.561.group/llms.txt)