MCP Server Directory

uselessfacts io.github.pipeworx-io/uselessfacts

Uselessfacts MCP — wraps uselessfacts.jsph.pl API (free, no auth)

usgswater io.github.pipeworx-io/usgswater

USGS Water MCP — wraps USGS National Water Information System (NWIS) REST services (free, no auth)

videogames io.github.pipeworx-io/videogames

Videogames MCP — wraps Free-to-Play Games API (freetogame.com, free, no auth)

wger io.github.pipeworx-io/wger

Wger MCP — wraps wger Workout Manager REST API (free, no auth for read)

arifOS — Constitutional AI Governance io.github.ariffazil/arifosmcp

Constitutional AI governance: 11 mega-tools, 13 floors, VAULT999 ledger. Human-in-loop by design.

wikifeed io.github.pipeworx-io/wikifeed

Wikifeed MCP — wraps Wikimedia Feed API (free, no auth)

wikipedia io.github.pipeworx-io/wikipedia

Wikipedia MCP — wraps Wikipedia REST API (free, no auth)

wikiviews io.github.pipeworx-io/wikiviews

Wikiviews MCP — wraps the Wikimedia Pageviews API (free, no auth)

words io.github.pipeworx-io/words

Words MCP — wraps Datamuse API (free, no auth required)

worlduank io.github.pipeworx-io/worldbank

World Bank MCP — wraps the World Bank Data API v2 (free, no auth)

xkcd io.github.pipeworx-io/xkcd

XKCD MCP — wraps xkcd.com JSON API (free, no auth)

Zendesk io.github.pipeworx-io/zendesk

Zendesk MCP Pack — tickets, users, organizations via OAuth.

zenquotes io.github.pipeworx-io/zenquotes

ZenQuotes MCP — wraps ZenQuotes API (free, no auth)

zippopotam io.github.pipeworx-io/zippopotam

Zippopotam MCP — wraps Zippopotam.us ZIP/postal code API (free, no auth)

Ybe Check – security and compliance orchestrator for AI-generated repositories.

Stop AI coding agents from leaking API keys. Local proxy swaps real secrets for phm_ tokens.

Scans MCP servers for prompt injection, data exfiltration, and privilege escalation.

NeuroStack io.github.raphasouthall/neurostack

Token-efficient MCP memory for Markdown vaults. Tiered search, GraphRAG, AI memories.

AI agent tools for Open Security Controls Assessment Language (OSCAL)

Wolfpack Intelligence io.github.rok-labs/wolfpack-intelligence

On-chain security and market intelligence for trading agents on Base.

138-tool MCP server for AI agent firms: security, A2A, Hebbian memory, fleet mgmt

MCP server for the Spanish AEMPS CIMA pharmaceutical registry (20,000+ authorised medicines).

iptables for MCP — blocks dangerous tool calls, scans for secrets, logs everything.

SlateHut io.github.sandeep1995/form2web

AI website builder (Wix/Framer alt). SlateHut MCP over HTTP: tools, schemas. Bearer auth.