What is an MCP server?

MCP (Model Context Protocol) is an open standard from Anthropic that lets AI assistants like Claude use external tools and data. An MCP server exposes a set of tools, for example "query this database" or "open this web page", that any MCP client (Claude Code, Claude Desktop, Cursor, VS Code, ChatGPT and others) can call.

What is the difference between local and remote MCP servers?

A local server runs on your machine and talks to the client over stdio; you install it with npx, uvx, Docker or from source. A remote server is hosted by the provider and you connect to it with a URL over Streamable HTTP, usually signing in with OAuth or an API key. Nothing to install.

Are MCP servers free?

Most MCP servers are free and open source. Many of them connect to a service that needs an account or API key (for example GitHub, Slack or a search API), and some hosted servers charge per call. Each listing here is labelled Free, Free server with account needed, or Paid service, estimated from its description.

How do I add an MCP server to Claude Code?

Use the claude mcp add command. For a remote server: claude mcp add --transport http . For a local npm package: claude mcp add -- npx -y . Every server page here has the exact command and an mcp.json snippet for other clients.

Where does this directory get its data?

It merges the official MCP Registry, the modelcontextprotocol/servers reference servers and the largest community lists (punkpeye/awesome-mcp-servers, awesome-remote-mcp-servers and wong2/awesome-mcp-servers), de-duplicated by repository, and is refreshed regularly.

How do I add my MCP server?

Submit it at claudecodeagents.com/mcp/submit, or have your agent POST it to /api/mcp/submit. Submissions are accepted automatically and go live straight away once a quick check confirms the repo or URL is a real MCP server.

MCP Server Directory: 45,000+ MCP Servers for Claude & AI Agents

20,069 servers

Us Auctions

pipeworx-io/mcp-us-auctions

US Auctions MCP — every live US auction lot in the consolidated index, government AND commercial…

Local + RemoteFreeOther Tools & Integrations

Us Code

pipeworx-io/mcp-us-code

US Code — the text of federal statutes, by citation.

Local + RemoteFreeDeveloper Tools

US Compliance

Ansvar-Systems/US_compliance_MCP

US compliance: HIPAA, CCPA, SOX, GLBA, FERPA, COPPA, FDA, EPA, FFIEC, NYDFS + 4 state privacy laws

LocalFreeOther Tools & Integrations

Us Elections

pipeworx-io/mcp-us-elections

us-elections -- U.S. election results by state, district, county and precinct (fleet #2952…

Local + RemoteFreeOther Tools & Integrations

US Freelancer Tax Calculator 2026

NarwhalThePong/freelance-tax-mcp

2026 US freelancer tax: quarterly estimates, SE tax, QBI, mileage, home office, SEP/401k, per diem.

LocalFreeOther Tools & Integrations

Us Gov Contracts

pipeworx-io/mcp-us-gov-contracts

US Government Contracts MCP — awarded state & local government contracts, normalized across…

Local + RemoteFreeOther Tools & Integrations

Us Iso Grid

pipeworx-io/mcp-us-iso-grid

US ISO Grid MCP — real-time electricity generation, fuel mix, demand, and locational marginal…

Local + RemoteFreeLocation & Travel

US Macro

hgus107/US-Macro-MCP

US macroeconomic data from FRED: inflation, employment, growth, housing, rates, recession signals.

LocalAccount neededOther Tools & Integrations

Us National Archives

pipeworx-io/mcp-us-national-archives

US National Archives Catalog (NARA): search the federal government's permanent records…

Local + RemoteFreeSearch & Web Scraping

US Places, Then

ianderso/us-places-mcp

US places then: county on a date, PLSS land, GNIS names, old topo maps, post offices.

LocalFreeLocation & Travel

Us Race Matchups

pipeworx-io/mcp-us-race-matchups

US race matchups — one call per federal race: who holds the seat, who is running, which of them…

Local + RemoteFreeOther Tools & Integrations

Usafiri

gabrielmahia/usafiri-mcp

Kenya transport guides: matatu fares, NTSA services, boda licensing, freight, passenger rights.

LocalFreeOther Tools & Integrations

usage

Rixtayz/mcp-usage

Find out which MCP servers you actually use: local, read-only audit of Claude Code transcripts.

LocalFreeMultimedia, Audio & Video

Usajobs

pipeworx-io/mcp-usajobs

USAJOBS.gov MCP — US federal job postings

Local + RemoteFreeOther Tools & Integrations

Usaspending

pipeworx-io/mcp-usaspending

USAspending MCP — Federal spending data from USAspending.gov API

Local + RemoteFreeDeveloper Tools

USB Servo Controller

ucandevices/UsbServoController

Drive 12 hobby servos on an open-hardware USB-C controller: moves, poses, sequences, rail current

LocalFreeOther Tools & Integrations

Usda Fdc

pipeworx-io/mcp-usda-fdc

USDA Food Data Central MCP

Local + RemoteFreeOther Tools & Integrations

Usda Market News

pipeworx-io/mcp-usda-market-news

USDA AMS Market News -- Livestock Mandatory Price Reporting (LMR).

Local + RemoteFreeOther Tools & Integrations

Usda Soil

pipeworx-io/mcp-usda-soil

USDA-NRCS Soil Data Access over SSURGO, the field-surveyed US soil map — the soil at any US…

Local + RemoteFreeLocation & Travel

Useagentpay

kar69-96/useagentpay

AI agent payments with human approval. Local-first, encrypted credentials, budget controls.

LocalFreeFinance, Fintech & Payments

UseHourly

Zontak-LLC/usehourly

Freelancer time tracking for AI assistants: log time, timers, timesheets, sign-off links, invoices.

Local + RemoteAccount neededFinance, Fintech & Payments

Uselessfacts

pipeworx-io/mcp-uselessfacts

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

Local + RemoteFreeSecurity & Identity

useqr

aaronte/useqr-mcp

Static QR PNG/SVG for agents. Designer and dynamic codes live at useqr.co.

Local + RemoteFreeAI Agents & Coding Agents

User Context Retrieval

Jacob-J-Thomas/user-context-retrieval-mcp-server

An MCP server that enables AI agents to ask users clarifying questions via pop-up terminal windows.

LocalFreeAI Agents & Coding Agents

User Intuition

Pen-and-Paper-AI/userintuition-mcpserver-ts

Run AI-moderated qualitative interviews with real people from any MCP client; cited findings.

Local + RemoteFreeOther Tools & Integrations

Userproof

GetUserProof/userproof

The top conversion fix from real visitor sessions, with file and line, checked after you ship.

LocalFreeOther Tools & Integrations

Usgs Critical Deposits

pipeworx-io/mcp-usgs-critical-deposits

USGS Critical Mineral Deposits of the United States — fleet #2823.

Local + RemoteFreeOther Tools & Integrations

Usgs Earthquakes

pipeworx-io/mcp-usgs-earthquakes

USGS Earthquake Catalog MCP (FDSNWS event API).

Local + RemoteFreeDeveloper Tools

Usgs Mineral Commodities

pipeworx-io/mcp-usgs-mineral-commodities

USGS Mineral Commodity Summaries (MCS) — U.S. production, imports, exports, consumption, price…

Local + RemoteFreeOther Tools & Integrations

Usgs Mrdata

pipeworx-io/mcp-usgs-mrdata

USGS MRData MCP — the Mineral Resources Data System (MRDS)

Local + RemoteFreeOther Tools & Integrations

Usgs National Map

pipeworx-io/mcp-usgs-national-map

USGS The National Map (TNM) Access API MCP

Local + RemoteFreeLocation & Travel

Usgs Volcano

pipeworx-io/mcp-usgs-volcano

USGS Volcano MCP — Volcano Hazards Program HANS-public feed (no auth)

Local + RemoteFreeSecurity & Identity

Usgs Water

mrfentmen/usgs-water-mcp

MCP server for USGS streamflow, gauge status, and water observations.

LocalFreeOther Tools & Integrations

Usgs Water

pipeworx-io/mcp-usgs-water

USGS Water Services (NWIS) MCP.

Local + RemoteFreeOther Tools & Integrations

Usitc Edis

pipeworx-io/mcp-usitc-edis

USITC IDS (Investigations Database System, ids.usitc.gov) — the CASE record for Section 337…

Local + RemoteFreeDatabases

Uspto Office Actions

pipeworx-io/mcp-uspto-office-actions

USPTO patent prosecution history: office action full text, examiner citations, claim-level…

Local + RemoteFreeOther Tools & Integrations

Uspto Ptab

pipeworx-io/mcp-uspto-ptab

USPTO PTAB MCP — wraps the USPTO Open Data Portal (ODP) PTAB APIs

Local + RemoteFreeDeveloper Tools

uta-shield

eddyflores100-lang/uta-shield

Provider-side MCP firewall: identity, threat-intel, barter, rate limits, DLP, audit.

Local + RemoteAccount neededSecurity & Identity

Utah Code

pipeworx-io/mcp-utah-code

Utah Code — state statutes by citation, plus topic search.

Local + RemoteFreeSearch & Web Scraping

Utilia Solana Transaction Evidence

mohamedkuch/utilia-solana-agent

Solana transaction diagnosis, simulation, token-risk evidence, and priority fees via x402 USDC.

Local + RemotePaid serviceFinance, Fintech & Payments

Utilitly PDF

utilitlyPDF/utilitly-mcp

Merge, split, rotate, delete, reorder and duplicate PDF pages on your computer. Nothing is uploaded.

LocalFreeOther Tools & Integrations

Utuh watcher

PugarHuda/utuh

Sweep bonded completeness claims on Creditcoin against Ethereum, and refute one that omits an event.

LocalFreeFinance, Fintech & Payments

Uuaid

uuaid/uuaid

Permanent identity + encrypted, quantum-ready memory that outlives the session, for any AI agent.

LocalFreeKnowledge, Memory & RAG

Uuid

mrfentmen/uuid-mcp

Generate UUIDs and validate formats locally. No network and no key.

LocalFreeOther Tools & Integrations

Uuid

pipeworx-io/mcp-uuid

UUID validation & generation MCP.

Local + RemoteFreeOther Tools & Integrations

Uuid AI

CSOAI-ORG/uuid-ai-mcp

AI-powered uuid ai MCP server for agents. Supports generate uuid, parse uuid, generate ulid. By

LocalFreeAI Agents & Coding Agents

UVC PTZ Camera

AbhijatSaxena/uvc-ptz-camera-mcp

Control a USB (UVC) pan/tilt/zoom camera, with every move confirmed from the picture.

LocalFreeOther Tools & Integrations

Uwarp

sherotree/uwarp-mcp

WCAG contrast checks, HSL palettes with :root CSS, and search of 500+ free Uwarp UI tools.

LocalFreeSearch & Web Scraping