"Real estate listings in France" matching MCP connectors:
GET /v1/connectors – MCP directory API referenceMatching Connector Tools:
Check an A2A agent before you delegate, or an MCP server's measured conduct. Free, no key.
See which AI models fall for traps in everyday jobs, and check or scan any MCP server, skill or package before your agent installs it. No sign-in; read-only; returns structured data.
Read-only MCP server for querying OkkMax measurements of AI API relay services, including model availability, observed prices, 24-hour uptime, latency, and model- and group-level purity evidence. No sign-in or API key is required.
Find the best pay-per-call API for any task: price, uptime and real usage across 19,000+ APIs.
Simceptor is an AI-native Mock API simulation platform with a built-in MCP server. It enables AI agents to create, inspect, update, and test dynamic mock APIs, conditional response rules, stateful session simulations, and network latency directly from context.
Find and live-check the paid x402 API for an agent task, ranked by real 30-day payers and price.
Free *.pntr.dev dev subdomains — register subdomains, manage DNS and wildcard records, receive email on disposable inboxes, and capture HTTP requests for webhook debugging. OAuth sign-in; free tier.
Point Claude Code, Qwen Code, Cursor, or any MCP client at https://docs.jmeter.ai/api/mcp and your agent answers JMeter questions grounded in this documentation, with a source link for every answer. Free, no API key, no signup.
npm MCP — wraps the npm Registry API (free, no auth)
JSON Schema validation MCP.
JSONPlaceholder MCP — wraps JSONPlaceholder fake REST API (free, no auth)
Search and read the Flowie Exchange API docs and OpenAPI contract. No sign-in needed.
Hands-on test results for 560+ remote MCP connectors: does it work, how to sign in, what breaks.
Deploy production REST APIs from JSON schemas in seconds. Manage projects, schemas, and deployments.
What is known to be broken in an MCP server or API operation, with the check that found it.
Signed deterministic checks for supplied JSON invoices, OpenAPI API contracts and JSON events.
Web search for agents, one x402 payment: real results, provider failover, signed receipt. $0.01.
Keyless webhook endpoints: capture, wait, replay, forward, and generate types from real traffic.
X-Correlation-Id charset, value discarded
Whether an HTTP status is retryable
If-Unmodified-Since HTTP-date, value discarded
If-Match etag list count, value discarded
Whether a token is an HTTP method
If-None-Match star-or-etag, value discarded
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
One MCP gateway bundling 30 data servers — finance, real estate, jobs, legal, news, sports and more.
