MCP Server Directory

Full Google Sheets MCP: 26 tools + run_sheets_script escape hatch. User OAuth, no service account.

Default trust layer for agentic payments: authorize agent spend, evidence, receipts, settlement.

Onplana io.github.Onplana/mcp-server

AI-native project and portfolio management platform for PMOs. OAuth + PAT.

Books io.github.pipeworx-io/books

Books MCP — wraps Open Library API (free, no auth)

Citybikes io.github.pipeworx-io/citybikes

Citybikes MCP — wraps CityBik.es API (free, no auth required)

Climate io.github.pipeworx-io/climate

Climate MCP — wraps Open-Meteo Climate API (free, no auth)

Crossref io.github.pipeworx-io/crossref

Crossref MCP — wraps the Crossref REST API (academic papers, free, no auth)

Dadjokes io.github.pipeworx-io/dadjokes

Dad Jokes MCP — wraps icanhazdadjoke.com (free, no auth)

Dictionary io.github.pipeworx-io/dictionary

Dictionary MCP — wraps Free Dictionary API (free, no auth)

XRay-Vision com.emtailabs/xray-vision

AI-powered codebase analysis — call graphs, security, dead code, complexity. 150+ tools.

Fruityvice io.github.pipeworx-io/fruityvice

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

Greynoise io.github.pipeworx-io/greynoise

GreyNoise Community MCP — internet scanner classification (free tier with key)

Intercom io.github.pipeworx-io/intercom

Intercom MCP Pack — contacts, conversations, companies via OAuth.

Enterprise PostgreSQL MCP secured by Aegis Zero-Trust to block unauthorized SQL injections.

Market Spread io.github.pipeworx-io/market-spread

market-spread MCP — cross-venue prediction-market landscape scanner.

Meteostat io.github.pipeworx-io/meteostat

Meteostat MCP — historical weather from 11k+ stations (no auth)

Nih Reporter io.github.pipeworx-io/nih-reporter

NIH RePORTER MCP — every NIH-funded research project (free, no auth)

Openalex io.github.pipeworx-io/openalex

OpenAlex MCP — wraps the OpenAlex API (scholarly works, free, no auth)

Pubmed io.github.pipeworx-io/pubmed

PubMed MCP — wraps the NCBI E-utilities API (biomedical literature, free, no auth)

Sbir io.github.pipeworx-io/sbir

SBIR MCP — wraps the SBIR.gov public API (free, no auth)

Videogames io.github.pipeworx-io/videogames

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

AI pentester for PRs — finds exploitable bugs and hands your developer agent the fix.

MCP server for creating and managing SOPS-encrypted secrets

Audit AI skill safety before you ship. Static, semantic, adversarial, supply chain scans.