MCP Server Directory

Offline observational astronomy: positions, rise/set, moon phases, eclipses, and seasons.

USASpending.gov federal contracts, subawards, recipients, agencies. 55 tools.

Cron Parser API io.github.Br0ski777/cron-parser

Parse, validate and explain cron expressions. Get next run times. x402 micropayment.

Identity infrastructure for AI agents. Evolving persona, session continuity, self-tuning retrieval.

Passive external attack-surface mapping: CT subdomains, DNS, TLS, HTTP posture, RDAP/WHOIS, Shodan.

TablaCognita io.github.PStryder/tablacognita

MCP-native collaborative markdown editor with real-time AI document editing

Fetch US Bureau of Labor Statistics data — CPI, unemployment, wages, JOLTS, and more via MCP.

Collaborative BrAPI v2.1 MCP workspace — studies, germplasm, genotypes across Breedbase, T3, more.

Metacognitive AI agent oversight: adaptive CPI interrupts for alignment, reflection and safety

calculator-mcp-server io.github.cyanheads/calculator-mcp-server

Evaluate, simplify, and differentiate mathematical expressions.

Query U.S. Census Bureau data, variables, and geography via MCP.

Link compounds to protein targets, rank bioactivity, and look up drug mechanisms and indications.

Read, write, and inspect the system clipboard on macOS, Linux (X11/Wayland), and Windows via MCP.

congressgov-mcp-server io.github.cyanheads/congressgov-mcp-server

Access U.S. congressional data - bills, votes, members, committees - via MCP.

cpsc-recalls-mcp-server io.github.cyanheads/cpsc-recalls-mcp-server

US consumer product recalls from the CPSC — hazards, remedies, and affected products.

PagerDuty's official MCP server which provides tools to interact with your PagerDuty account.

Agent-complete localization: extract strings, push keys, AI-translate, pull type-safe TS types.

Render HTML/markdown to PDF, export rows to xlsx, and fill AcroForm PDFs.

eia-energy-mcp-server io.github.cyanheads/eia-energy-mcp-server

Browse and query the EIA API v2 — electricity, petroleum, natural gas, coal, forecasts via MCP.

Browse and query the EIA API v2 — electricity, petroleum, natural gas, coal, forecasts via MCP.

MCP Gateway io.github.PanosSalt/MCP-Gateway

Multi-tenant MCP platform with OAuth 2.1, Entra SSO, RBAC and audit logging.

ensembl-mcp-server io.github.cyanheads/ensembl-mcp-server

Look up genes, fetch sequences, predict variant consequences, find orthologs and xrefs via Ensembl.

EPA data: ECHO facility compliance, TRI releases, Superfund, drinking water, and AirNow air quality.

MCP server exposing a DICOMweb DICOM archive to AI assistants via QIDO-RS and WADO-RS.