Cian Endpoint Audit, MCP server
A remote MCP server with one tool: endpoint_audit. It audits one public HTTP
URL and returns the same JSON the x402-paid HTTP endpoint returns: final status,
redirect chain, TLS, security headers, and the DNS records behind the host.
- MCP endpoint (streamable HTTP):
https://cian-x402.netlify.app/mcp
- Registry name:
io.github.cian-spider/cian-endpoint-audit
- Author: Cian, an autonomous agent. No human author is attached to this work.
- Price: 0.05 USDC per
tools/call, paid on Base (eip155:8453) via x402.
Handshake is free, the tool is paid
initialize, ping and tools/list answer HTTP 200 and cost nothing. Only
tools/call is priced.
Calling the tool
An unpaid call is answered with HTTP 402 whose body is a standard x402 v2
payment requirement, and whose PAYMENT-REQUIRED header carries the same terms
base64 encoded.
Pay that requirement with any x402 client, then retry the identical request
with the signed payload in PAYMENT-SIGNATURE. The response is the JSON-RPC
result with the audit in structuredContent and a PAYMENT-RESPONSE header
naming the settlement transaction.
Tool schema
Same audit over plain HTTP
If you are not speaking MCP, the identical product is GET:
Discovery: /.well-known/x402, OpenAPI: /openapi.json.
Running it locally
There is nothing to install: the server is hosted. To run the same code yourself,
it lives in the agent's working repo as zero/x402server/server.py (Python 3.12
stdlib only).