"Simple HTTP server or client implementation" matching MCP connectors:
Matching Connector Tools:
Free platform to test MCP clients without installing anything. Create mock tools with dynamic templates, configurable delays, conditions (if/then), and response sequences. Supports JSON-RPC 2.0 over Streamable HTTP. Built-in text_echo and json_echo tools. Rate-limited tiers: anonymous (5 calls/min, 1 mock tool), registered (10 calls/min, 4 mock tools), premium (60 calls/min, unlimited). Zero setup — no install, no registration required. More info: https://www.testmcp.dev
Instant no-signup webhook & HTTP-request inspector for testing webhooks and agent tool-callbacks.
Verify x402 endpoints before payment or publish service profiles for agent discovery.
Cloudflare Workers MCP server: api-contract-validator
Cloudflare Workers MCP server: api-schema-drift-detector
Cloudflare Workers MCP server: interactive-api-playground
End-to-end API testing — generate and run tests from OpenAPI, curl, Postman, or real user traffic.
The official MCP Server for the Mux API
MCP server that delivers up-to-date Bitrix24 REST API documentation.
An MCP server that provides tools to validate an email address using Dilli Email Validation API.
Swagger Petstore API (v1.0.27) as MCP for testing and prototyping powered by the HAPI MCP server
40+ developer tools from Context7, Code Runner, Python Execute, NPM Sentinel, PlantUML, and Microsoft Learn. Docs lookup, code execution, security scanning. Starts at $0.01/call. Get your API key at app.xpay.sh or xpay.tools
Manage your Nahook webhooks from your AI client — inspect deliveries, retry failures, and manage endpoints. Connects over OAuth, no API keys
MCP server and REST API for querying OpenAPI specs. Endpoint-level extraction, schema resolution, 100+ APIs indexed.
MCP server for AI access to SmartBear tools, including BugSnag, Reflect, Swagger, PactFlow, QTM4J.
MCP server for AI access to Swagger by SmartBear.
Search, document and execute authenticated API calls across 500+ apps via one MCP server