MCP Server Directory

Mailcannon

AI-powered email outreach platform — send campaigns with deliverability tracking.

io.github.cr7258/elasticsearch-mcp-server

MCP server for interacting with Elasticsearch

io.github.JonesRobM/physbound

Physical Layer Linter — validates RF link budgets, Shannon capacity, and noise floors.

Québec land intelligence: municipal decisions, zoning, assessment roll, registry, permits.

MCP AutoMem

Graph-vector memory for AI assistants using FalkorDB and Qdrant

io.github.Hyg900928/mcp-weather-server

An MCP server for weather information.

caruon

Carbon MCP — UK Carbon Intensity API (free, no auth)

io.github.sathergate/flagpost

Feature flags for Next.js. One file, full control with A/B testing.

com.seanwinslow/intent-engineering

Audit, scaffold, and triage agent intent specs against a 9-section template.

GetABrain

Real human judgment as agent tools — ask a question, get a structured human answer back.

ShadowCrawl

Rust MCP stealth scraper: anti-bot search/scrape with CDP fallback + HITL non-robot.

io.github.zekebuilds-lab/mcp-pay-gate

Dual-rail Lightning paywall for MCP servers: accepts L402 and x402 bip122/exact, one LNBits backend.

Proxy Doctor

Diagnose proxy misconfigurations that break AI coding tools (Cursor, VS Code, Windsurf)

Domain & Company Intel MCP

Domain intel for AI agents: RDAP registration, DNS, email deliverability, tech stack.

catfacts

Cat Facts MCP — wraps Cat Facts API (free, no auth)

io.github.Nano-Nimbus/locus

Hierarchical markdown memory palace for AI agents — structured palace navigation via MCP tools.

io.github.KoyoYeager/pystub

Auto-detect stubbable packages for Python exe builds and generate minimal stub code

io.github.mdfifty50-boop/qc-validator

Output quality control and validation for AI agents

Semantic document memory using Redis vector store. Save and recall files with natural language.

io.github.sunsiyuan/human-survey

Feedback collection for AI agents. Create surveys, collect responses, get results.

io.github.dominic-righthere/envibe

Secure permission layer between AI agents and your .env files

io.github.peturgeorgievv-factory/postfast-mcp

MCP server for the PostFast API — schedule and manage social media posts via AI tools

chucknorris

Chuck Norris MCP — wraps chucknorris.io (free, no auth)

io.github.DiegoBr4nd/godot-gut-mcp

Servidor MCP que permite ejecutar tests de Godot con GUT desde cualquier IA