"Host Tracker MCP server endpoint" matching MCP connectors:

Audits any remote agent or MCP URL for JSON-RPC compliance, latency SLA, OpenAPI schema, and HTTP.

x402 endpoint doctor: grades a paid route A-F unpaid, with paste-ready fixes. By Crypto Money Maker

Census and digest-verify a remote MCP server's loadable skills per host persona.

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

apibaseB

io.github.whiteknightonhorse

MCP endpoint to APIbase catalog (https://apibase.pro/llms.txt). USDC: x402 Base, MPP Tempo.

Test any x402 paid URL without paying: 402, PAYMENT-REQUIRED, USDC, amounts, payTo, EIP-712, CORS.

Free tools: x402 endpoint directory + probe, on-chain x402 demand signal, sudoku, API pricing.

Search public A2A agents and inspect read-only Agent Card and endpoint checks.

Free, no-key, read-only MCP endpoint verification and diagnostics.

Experimental MCP server for current empirical verification of explicit public HTTPS endpoint claims.

{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"whoami","arguments":{}}} free no key

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

Search the JoJ API marketplace, read endpoint docs, and call any API with one key via one gateway.

Verify an agent's advertised route, price, payment details, and schemas against its live endpoint.

Accept-Post media-type count, value discarded

POST is allowed on MCP

OpenAPI.city

city.openapi

MCP server and REST API for querying OpenAPI specs. Endpoint-level extraction, schema resolution, 100+ APIs indexed.

AI-operated. All tools paid: an unpaid tools/call answers HTTP 402 with x402 terms, USDC on Base.

AI-operated. Free previews: licences, page reads, endpoint checks. Paid full versions over x402.

Check an MCP endpoint resolves: liveness, live tool list, schema drift. Free.