Free MCP servers · page 102

Open source MCP servers that need no paid account or API key, based on each listing. Run them locally with Claude Code or any MCP client.

12,872 servers · showing 4849–4896

Lambdacad

3

Psalmustrack/lambdacad-mcp

Drive BricsCAD on Linux via an AutoLISP bridge: 2D drafting with dimensions and hatches, 3D solids with booleans, generated drawing views and PDF export.

LocalFreePythonArt & Design

SwarmMemo

3

Hugo0/swarmmemo

Public message board for AI agents: read and post in rooms and threads with no account, plus optional Ed25519 identity, private and sealed conversations, claimable work items and a Bitcoin-anchored transparency log. Hosted at swarmmemo.com/mcp, or run the Go server with the local Python bridge.

Local + RemoteFreePythonCommunication

A11y Check

3

IsaacEryn/a11ychk

Web accessibility scanning (WCAG 2.2 AA + KWCAG 2.2) with Korean remediation guides

LocalFreeOther Tools & Integrations

A2ahub

3

ydnikolaev/a2ahub

Reliable handoffs between autonomous agents, using a Git repository both sides can inspect.

LocalFreeVersion Control

A4A (Agent-for-Agent Network)

3

a4a-network/a4a

Open E2EE messaging protocol and MCP server so AI agents of different people can talk directly.

LocalFreeAI Agents & Coding Agents

ACMS

3

gattjoe/ACMS

Apple Container MCP Server (ACMS) provides access to Apple's container CLI tool on macOS

LocalFreeOther Tools & Integrations

ADU Florida

92

themutherfvcker/ADU-Florida

Check if a Florida address can build an ADU: county GIS zoning, eligibility verdict, local rules.

Local + RemoteFreeOther Tools & Integrations

Aegis Security Skills

381

drupadsachania/aegis-skills

Read-only library of 24 defensive cybersecurity skills: ATT&CK, ATLAS, DFIR, CTEM and more.

Local + RemoteFreeSecurity & Identity

Agent Guild

3

oddessentials/agent-guild

See and steer Claude Code, Codex, Antigravity, Grok, Docker Agent and shell sessions in Agent Guild.

LocalFreeCloud Platforms

Agent Wallet

3

kaditang/agent-wallet-mcp

DEPRECATED - hosted service retired 2026-10-31. Local non-custodial Solana MCP (you sign).

LocalFreeFinance, Fintech & Payments

Agentic Ads

3214

nicofains1/agentic-ads

Ad network for AI agents — monetize MCP servers with contextual ads. 70% revenue share.

Local + RemoteFreeMarketing

AI r

3

pro-target/ai-r

Read local AI agent sessions (Claude Code, Codex, OpenCode, Antigravity, Pi): intents, plans, tools

LocalFreeAI Agents & Coding Agents

Airlock RLS

082

mateuszingano/airlock-rls-mcp

Scan a deployed site for an exposed Supabase service_role key and audit Row Level Security.

LocalFreeDatabases

al Buddy Memory

31.7k

flytomoon/al-buddy-memory

Governed local memory for AI agents: facts are retired, not overwritten, and every call is audited.

LocalFreeKnowledge, Memory & RAG

Alexandria

3

The-40-Thieves/alexandria-mcp

Search, read, and cite across 152 libraries: 11 tools, 3 prompts, and a full-text resource.

LocalFreeSearch & Web Scraping

Alphacouncil Agent

32.3k

Zhao73/alphacouncil-agent

Simulated investment committee: 27 investor lenses read the same filings, debate, and a PM decides.

LocalFreeAI Agents & Coding Agents

Ambient Context

3

nassie256/ambient-context-mcp

Local Windows ambient context (presence, foreground app, battery) as privacy-gated MCP tools.

LocalFreeOther Tools & Integrations

Anode background Windows desktop

3

skulitom/Anode

Background Windows desktop for AI agents: native GUI automation, screenshots and app testing.

LocalFreeBrowser Automation

Apolo

3

webcafeina/Apolo

Optimize, convert and compare images locally: WebP, AVIF, JPEG XL, JPEG and PNG.

LocalFreeMultimedia, Audio & Video

Apolo Cad

3

mariorojasmz/apolo-cad

Agent-native parametric 3D CAD: model machines, validate them and emit shop drawings

LocalFreeE-Commerce & Delivery

appCN

3

Salah-XD/appCN

Install & correctly use appCN React Native / Expo components, streamed from the live registry.

LocalFreeOther Tools & Integrations

Ariadne

3

mclaut/ariadne

Local-first agent memory with verified backup rotation and explicit project isolation.

LocalFreeKnowledge, Memory & RAG

Astria

3

Nodesify/astria

Turn any codebase into a queryable knowledge graph — offline-first, zero API keys.

LocalFreeKnowledge, Memory & RAG

Atlassian Extended

3

vish288/mcp-atlassian-extended

Jira/Confluence MCP server (MCP 2026-07-28): sprints, boards, attachments; writes or read-only

LocalFreeProductivity & Project Management

Aviation Weather

3

cyanheads/aviation-weather-mcp-server

METARs, TAFs, PIREPs, domestic/international SIGMETs and CWAs via NWS AWC. AIRMETs not served.

Local + RemoteFreeLocation & Travel

Bitbucket

3

lawp09/bitbucket-mcp

MCP server for Bitbucket API - manage repositories, pull requests, comments, pipelines and more

LocalFreeVersion Control

BlockHand

3

gjlmotea/blockhand-mcp

Minecraft Education Edition MCP server: Agent robot, 24 build shapes, events. No add-on needed.

LocalFreeAI Agents & Coding Agents

briar

3

iklobato/briar

Local knowledge store built from GitHub, Jira, Linear and cloud history, served over MCP.

LocalFreeVersion Control

brokre

3732

Furowu/brokre

AI-safe credential broker for MCP — run saved SSH/MySQL/psql aliases; passwords never reach AI.

LocalFreeDatabases

Browserbash

3362

PramodDutta/browserbash

Plain-English browser tests for AI agents: real Chrome, deterministic verdicts. Free, no API keys.

LocalFreeBrowser Automation

Budna

3

budna-marketplace/mcp

Budna marketplace discovery and account access for AI assistants, with permissions you control.

LocalFreeOther Tools & Integrations

Builderforce Memory

3

SeanHogg/builderforce-memory

Token-saving persistent memory for AI agents: recall durable facts instead of re-reading files.

LocalFreeKnowledge, Memory & RAG

bundlebox

3300

blackswanalpha/bundlebox

Where the work is, packed before the agent reads: brief, symbol tables, findings, token bill.

LocalFreeAI Agents & Coding Agents

Camacho

92

sanchirico/camacho-mcp

Persistent tmux terminal for AI agents — real-time spectating, SSH host-group dispatch.

LocalFreeAI Agents & Coding Agents

Capture Screen

3

ochtum/CaptureScreenMCP

Windows screen capture MCP server with display, region, and active-window capture tools.

LocalFreeOther Tools & Integrations

Caveat Lang

36.6k

WSattazahn/caveat-lang

Authoring bridge for Caveat: validate, check and test programs; explain decisions; find dependents.

LocalFreeSecurity & Identity

Chronicle

3

Leviathan0x0/Chronicle-MCP

Local, private AI chat history search & memory: BM25 over your Cursor, Claude and ChatGPT chats.

LocalFreeSearch & Web Scraping

Claude Code Plugin

3

nometria/claude-code-plugin

Deploy any app to any cloud. 20 tools for deployments, previews, and management.

LocalFreeAI Agents & Coding Agents

ClaudeCodeUsageTool

0104

wheelbarrel00/ClaudeCodeUsageTool

Claude Code token usage, cost, and plan limits from local logs and Anthropic's usage API.

LocalFreeMonitoring & Observability

Clavio

103

y-yahiaoui1406/clavio-mcp

Real-time data resolver for agents. 200 countries, 169k cities, FX, weather, Africa/MENA.

LocalFreeLocation & Travel

Clinical Trial Design

3123

wei-ai-lab/clinical-trial-design

Phase 2/3 clinical trial design via gsDesign / gsDesign2: sample size, GS boundaries, multiplicity

LocalFreeOther Tools & Integrations

Clipboard

3

cyanheads/clipboard-mcp-server

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

LocalFreeOther Tools & Integrations

Cloud fs

3

nogoo9/mcp-server-cloud-fs

Cloud replacement for mcp-server-filesystem — 20 tools for S3, Azure Blob, and GCS

LocalFreeCloud Platforms

codeDB Lens

3

codedb-io/codedb-lens

Read-only health checks and data questions for SQL Server and PostgreSQL, with your saved profiles.

LocalFreeDatabases

codeindex

3

munhq/codeindex

Structural code intelligence over MCP: symbols, callers, imports and blast radius, 40+ languages.

LocalFreeDeveloper Tools

Codemunch Pro

3

BigJai/codemunch-pro

Code indexing MCP: 15 tools, 10 languages, hybrid search, call graphs, O(1) retrieval.

LocalFreeSearch & Web Scraping

CogZ

3

balaianu/CogZ

Local-first engineering cognition for AI coding agents — persistent memory over your codebase.

LocalFreeKnowledge, Memory & RAG

comdirect

3

mad4ms/comdirect-mcp

Read-only access to comdirect accounts, transactions, depots, orders and postbox documents.

LocalFreeE-Commerce & Delivery