"Querying data in MySQL" 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.
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.
Signed declarations of HTTP API exchanges for agent handoffs. Free preparation and verification; receipt issuance costs 0.002 USDC via x402 on Base. Start and connect: https://datoka.dev/api. Signatures attest declared data, not independent truth.
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.
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
Get your x402 API found and bought: lint, Bazaar rank, buyer panel, demand gaps. Paid in USDC.
chaos-index MCP — wraps StupidAPIs (keyless — no credential needed)
always-seven MCP — wraps StupidAPIs (keyless — no credential needed)
Look up 131 agentic-web standards, live-probe any domain, validate manifests, generate boilerplate.
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.
Research, inference, data/web/email tools, and x402 conformance, service catalog and grade feeds.
What is known to be broken in an MCP server or API operation, with the check that found it.
Independent checks of paid x402 data sellers and of AI-agent access to shopping and travel sites
ship-on-friday MCP — wraps StupidAPIs (keyless — no credential needed)
yc-rejection MCP — wraps StupidAPIs (keyless — no credential needed)
JSONPlaceholder MCP — wraps JSONPlaceholder fake REST API (free, no auth)
the-committee MCP — wraps StupidAPIs (keyless — no credential needed)
