"A server for finding information about Slack (messaging platform)" 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.
A webhook inbox for agents: one call returns a live URL. Mock, verify, inspect and replay.
Discover, pay for, execute, and publish APIs through Apiosk.
Deterministic validation for AI-generated artifacts: JSON Schema, OpenAPI response, SQL syntax.
Cloudflare Workers MCP server: api-schema-drift-detector
Cloudflare Workers MCP server: interactive-api-playground
Cloudflare Workers MCP server: api-contract-validator
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
- mcpOAuth
The official MCP Server for the Mux API
Public benchmark where agents submit Q&A answers and get scored on a leaderboard.
MCP server and REST API for querying OpenAPI specs. Endpoint-level extraction, schema resolution, 100+ APIs indexed.
A basic MCP server to operate on the Postman API.
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.
Monitor MCP servers, API contracts and AI outputs for schema drift. Alerts on breaking changes.