"addy.io" matching MCP connectors:
GET /v1/connectors – MCP directory API referencePublish your API docs so AI assistants can look up endpoints and call your API correctly.
JSON Schema validation MCP.
Email inboxes, webhook URLs, mock APIs and 170+ tools for coding agents over one MCP connection.
Email, webhooks, mocks and 170 tools for AI coding agents, over one MCP connection.
JSONPlaceholder MCP — wraps JSONPlaceholder fake REST API (free, no auth)
Free agent-service discovery, OpenAPI document checks, and receipt verification. No API key needed.
Send and debug webhooks — applications, endpoints, messages, delivery attempts and replays.
always-seven MCP — wraps StupidAPIs (keyless — no credential needed)
npm MCP — wraps the npm Registry API (free, no auth)
excuse MCP — wraps StupidAPIs (keyless — no credential needed)
apology MCP — wraps StupidAPIs (keyless — no credential needed)
mercury-number MCP — wraps StupidAPIs (keyless — no credential needed)
chaos-index MCP — wraps StupidAPIs (keyless — no credential needed)
corporate-apology MCP — wraps StupidAPIs (keyless — no credential needed)
schrodingers-boolean MCP — wraps StupidAPIs (keyless — no credential needed)
ship-on-friday MCP — wraps StupidAPIs (keyless — no credential needed)
passive-aggression MCP — wraps StupidAPIs (keyless — no credential needed)
yc-rejection MCP — wraps StupidAPIs (keyless — no credential needed)
victorian-complaint MCP — wraps StupidAPIs (keyless — no credential needed)
the-committee MCP — wraps StupidAPIs (keyless — no credential needed)
End-to-end API testing — generate and run tests from OpenAPI, curl, Postman, or real user traffic.
Webhook capture and replay, delivery pipes, and signed multi-agent rooms. No signup to start.
