"A tool or application for creating a to-do list" matching MCP connectors:
GET /v1/connectors — MCP directory API referenceMatching Connector Tools:
Conformance checker for MCP servers. Free, no key, verdicts recomputable and re-measured daily.
Independent health, price and history for x402/MPP endpoints. Metered over x402; free grade on web.
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
Discover, pay for, execute, and publish APIs through Apiosk.
Experimental MCP server for current empirical verification of explicit public HTTPS endpoint claims.
Guide developers from setup through a verified, policy-aware, audited Alter API call.
Webhook capture bins for agents: get a URL, wait for webhooks, set replies, verify signatures.
Lint any MCP endpoint you name: handshake, tool schemas, error conformance. Free, no key.
SqueezeOS MCP for live machine discovery and x402-paid USDC APIs on Base.
Production proofs for breaking JSON Schema/MCP changes; UNKNOWN/NO_WITNESS_FOUND not compatible.
Read-only ArcadeOps discovery for developer docs, OAuth, OpenAPI and synthetic sandbox.
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.
Ephemeral mailboxes and a mock OAuth IdP for testing email and auth flows — 39 API-driven tools covering mailboxes, mails, attachments, domains, teams, and mock identities.
MCP tool observatory: do registry servers answer, and are their answers true? No key.
Check an MCP endpoint resolves: liveness, live tool list, schema drift. Free.
Anonymous webhook capture, inspection, waiting, and response configuration for AI agents.
Verify x402 endpoints before payment or publish service profiles for agent discovery.
Deterministic validation for AI-generated artifacts: JSON Schema, OpenAPI response, SQL syntax.
API governance for AI agents. Detects breaking changes, scores blast radius, blocks unsafe calls.
Remote MCP for 1,500+ APIs. Vault-managed credentials; OAuth or API key. Search, load, and execute.
