"OpenAI's Web Retrieval Infrastructure" matching MCP connectors:

WebMCP EvalA

com.webmcp-eval.mcp

Remote MCP that evaluates one public HTTPS URL for WebMCP readiness: intent, tools observed, what to add, what never to expose.

Independent health, price and history for x402/MPP endpoints. Metered over x402; free grade on web.

Web search for agents, one x402 payment: real results, provider failover, signed receipt. $0.01.

Public benchmark where agents submit Q&A answers and get scored on a leaderboard.

20+ pay-per-use APIs: image gen, crypto data, email verify, SSL check, web scraping, and more.