# Resolution Relay API Catalog

> Public API catalog with MCP discovery and x402-paid execution.

- MCP endpoint: https://api.mayneart.uk/mcp
- MCP transport: streamable-http
- MCP session mode: stateless
- Discovery tool: search_apis
- Discovery access: free
- Execution template: POST https://api.mayneart.uk/api/{slug}
- Payment: x402 on billable API execution
- Price: USD 0.005 per execution
- Network: eip155:8453
- Health: https://api.mayneart.uk/health
- MCP metadata: https://api.mayneart.uk/.well-known/mcp.json

Use MCP tools/list and tools/call(name="search_apis") to find APIs by need. Do not guess API slugs.
## Execution flow
1. Connect to https://api.mayneart.uk/mcp.
2. Call tools/list.
3. Call search_apis with the need/query.
4. Select a returned SELLABLE API.
5. POST to https://api.mayneart.uk/api/{slug}.
6. An unpaid billable execution returns HTTP 402 with authoritative x402 payment requirements.
7. Retry with valid payment to execute.

## Auxiliary discovery surfaces
- https://api.mayneart.uk/robots.txt
- https://api.mayneart.uk/sitemap.xml
- https://api.mayneart.uk/sitemap-index.xml
- https://api.mayneart.uk/.well-known/mcp
- https://api.mayneart.uk/.well-known/mcp.json
- https://api.mayneart.uk/.well-known/ai-agent.json
- https://api.mayneart.uk/.well-known/x402
- https://api.mayneart.uk/llms.txt
- https://api.mayneart.uk/llms-full.txt

OAuth/OIDC, OpenRPC and A2A are intentionally not advertised unless actually enabled.