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

Numguard

ipezygj/numguard

Verify a number before an agent asserts it — evals, backtests (Deflated Sharpe), signed receipts.

LocalFreeAI Agents & Coding Agents

NumProof

projecttron/numproof

Deterministic signed verification of numeric & financial claims for AI agents & spreadsheets.

Local + RemoteFreeProductivity & Project Management

Numpy

daedalus/mcp-numpy

An MCP server that exposes NumPy functionality

LocalFreeOther Tools & Integrations

NumRadar

numradar/mcp

Check whether phone numbers are registered on WhatsApp, from your AI agent.

Local + RemoteAccount neededCommunication

Numverify

pipeworx-io/mcp-numverify

Numverify MCP — wraps the Numverify phone-number validation API (APILayer)

Local + RemoteFreeDeveloper Tools

Nutanix Prism Central

WYRE-AI/nutanix-mcp

Multitenant Streamable HTTP bridge over Nutanix's official v4 API MCP server (Prism Central).

LocalFreeDeveloper Tools

Nutanix Prism Central

wyre-technology/nutanix-mcp

Multitenant Streamable HTTP bridge over Nutanix's official v4 API MCP server (Prism Central).

LocalFreeDeveloper Tools

nuthatch

nightswatchhq/nuthatch

Query an EVM contract's indexed history with SQL, via a local nuthatch nest and nuthatch dev.

LocalFreeDatabases

Nutrition Tracker AI

CSOAI-ORG/nutrition-tracker-ai-mcp

Nutrition Tracker Ai MCP Server by MEOK AI Labs

LocalFreeOther Tools & Integrations

NUX MG-30

voronkovd/nux-mg30-mcp

Control a NUX MG-30 guitar processor over USB MIDI: amps, effects, knobs and presets.

LocalFreeOther Tools & Integrations

Nvd

pipeworx-io/mcp-nvd

NVD MCP — wraps the NIST National Vulnerability Database API.…

Local + RemoteFreeDatabases

NVIDIA AI CKG

Yarmoluk/ckg-nvidia-ai

NVIDIA AI knowledge graphs — 20 domains. 4x F1, 11x fewer tokens, SHA-256 provenance. MCP-native.

Local + RemoteFreeKnowledge, Memory & RAG

NVIDIA NemoClaw CKG

Yarmoluk/ckg-nvidia-nemoclaw

NVIDIA NemoClaw knowledge graph — 55 nodes, F1 0.576 (+269% vs RAG), 11x fewer tokens. MCP-native.

Local + RemoteFreeKnowledge, Memory & RAG

Nws

pipeworx-io/mcp-nws

NWS MCP — US National Weather Service (no auth)

Local + RemoteFreeSecurity & Identity

Ny Authority Debt

pipeworx-io/mcp-ny-authority-debt

ny-authority-debt — New York public authority debt issuance. Fleet #1001.

Local + RemoteFreeSecurity & Identity

Ny Dmv

pipeworx-io/mcp-ny-dmv

New York State DMV MCP — registered vehicles and EV adoption by county/ZIP/make, DMV office…

Local + RemoteFreeOther Tools & Integrations

Ny Omig Exclusions

pipeworx-io/mcp-ny-omig-exclusions

New York State OMIG Medicaid provider exclusion screening — fleet #2788.

Local + RemoteFreeOther Tools & Integrations

Ny Procurement

pipeworx-io/mcp-ny-procurement

New York State Procurement MCP — State contract awards & procurement (keyless).

Local + RemoteFreeOther Tools & Integrations

Nyambot

GabMJ23/nyambot-mcp

L'administration française pour vos agents IA : communes, géocodage, risques, DPE.

LocalFreeAI Agents & Coding Agents

NYC FHV Intelligence API

MATCHUP-LABS/nycfhv

Real-time NYC TLC for-hire vehicle license verification and renewal-window lead lookups via MCP.

LocalAccount neededDeveloper Tools

NYC Property & Venue API

MATCHUP-LABS/nycapi

NYC property intelligence, building violations, and restaurant/venue compliance via MCP.

LocalAccount neededDeveloper Tools

Nyfed Markets

pipeworx-io/mcp-nyfed-markets

New York Fed Markets Data APIs — markets.newyorkfed.org, keyless JSON, no auth wall.…

Local + RemoteFreeSecurity & Identity

Nyumba

gabrielmahia/nyumba-mcp

Kenya housing guides: rents, tenant rights, permits, affordable housing, mortgage estimate.

LocalFreeOther Tools & Integrations

Nyx5

Nicoiakl/nyx5

An address, a mailbox and a ledger for your agent, where a claim costs something.

LocalFreeAI Agents & Coding Agents

Nyxmix

0453

Open-Cosmic-Software/nyxmix

Agent-first multitrack audio editor: edit sessions live with a human watching.

LocalFreeMultimedia, Audio & Video

nyxory

com.nyxory/nyxory

Agent-to-agent cloud service: deploys and runs your apps and services — domains, logs, real status.

Local + RemoteFreeMonitoring & Observability

O Process

UncleTIM-GZ/O-Process

AI-native process classification. 2436 processes + 3284 KPIs from APQC, ITIL, SCOR.

LocalFreeOther Tools & Integrations

Oakstack

dev.oakstack/oakstack

Cron jobs with retries, webhook relay, HTML-to-PDF, and transactional email for your app.

Local + RemoteAccount neededCommunication

Obis

pipeworx-io/mcp-obis

OBIS (Ocean Biodiversity Information System) MCP.

Local + RemoteFreeOther Tools & Integrations

Objekt Upload

0xLighthouse/objekt-mcp-upload

Public file storage for AI agents. Upload files and get a permalink back.

LocalAccount neededAI Agents & Coding Agents

Oblique Lawyer

148

edgardomunoznajar/oblique-lawyer

Search 529K US statute sections. 50 states + USC + CFR. Semantic search, citation graph, MCP.

LocalFreeSearch & Web Scraping

Obol

superbigroach/obol-mcp

Find, pay for & call APIs in USDC from AI agents - gasless, sub-cent, 0% commission.

LocalPaid serviceAI Agents & Coding Agents

Obolus

inviti8/Obolus

Disposable Algorand wallet for AI agents. Pay x402 resources in USDC, no human provisioning.

LocalPaid serviceFinance, Fintech & Payments

Obra Cfo

0141

lilycip/obra-cfo

Local-first MCP that runs an investment committee on your pitch and scores funding readiness.

LocalFreeOther Tools & Integrations

Obra Cto

0172

lilycip/obra-cto

Local-first MCP that scores your codebase's build readiness. Your code never leaves your machine.

LocalFreeDeveloper Tools

Obris

obris-dev/obris-mcp

Stop re-explaining yourself to AI. Save knowledge once, use it in every conversation.

Local + RemoteAccount neededKnowledge, Memory & RAG

Obscuraai

madeinphantom/obscuraai-mcp-server

Generate visual AI automation workflows from any MCP client. No API key required.

LocalFreeDeveloper Tools

Obscurify.ai

Obscurify-ai/obscurify-mcp

Ask 200+ AI models privately from your agent: one-shot, chat, second opinions, prices, images.

LocalAccount neededCommunication

Observability

gagandeeppra/mcp-observability-server

MCP server for querying logs from observability platforms with unified search and tracing

LocalFreeSearch & Web Scraping

Observability AIops

AIops-tools/Observability-AIops

Governed Prometheus + Grafana ops: PromQL, alerts, dashboards, RCA; 39 tools.

LocalFreeMonitoring & Observability

Observe Instrument

alanzha2/observe-instrument-mcp

Add OpenTelemetry tracing to Python AI agents. Supports LangGraph, LlamaIndex, CrewAI, OpenAI SDK.

LocalFreeAI Agents & Coding Agents

Obsidian

afable702/obsidian-mcp-server

Complete Obsidian vault MCP server. 35 tools: notes, search, graph, tags, canvas.

LocalFreeSearch & Web Scraping

Obsidian

tylern91/obsidian-mcp-server

Filesystem-based MCP server for Obsidian vaults — read, search, and edit notes, no app required.

LocalFreeSearch & Web Scraping

Obsidian CLI

DariusCorvus/obsidian-cli-mcp

Local MCP server for Obsidian Desktop via the official Obsidian CLI.

LocalFreeKnowledge, Memory & RAG

ObsidianCorps Umami Analytics

obsidiancorps/umami-mcp

Umami v3 MCP for Cloud or self-hosted analytics, with read-only, privacy-conscious defaults.

LocalFreeKnowledge, Memory & RAG

obsify

Formative-Sum41/obsify

Local, privacy-preserving PII toolkit over MCP — shape to the model, substance stays local.

LocalFreeAI Agents & Coding Agents

OCL Context Layer

Nantiai/ocl-standard

Reference MCP server for OCL, an open standard giving AI agents scoped business meaning for Odoo.

LocalFreeAI Agents & Coding Agents

Ocm

sandeepbazar/ocm-mcp-server

Guardrailed fleet ops for AI agents: multi-cluster Kubernetes via OCM with policy, approval, audit.

LocalFreeCloud Platforms