Free MCP servers · page 50

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 2353–2400

JSON

15

VadimNastoyashchy/json-mcp

MCP server empowers LLMs to interact with JSON files efficiently. With JSON MCP, you can split, merge, etc.

LocalFreeAI Agents & Coding Agents

my Bear

15

bart6114/my-bear-mcp-server

Read notes and tags from the Bear note-taking app directly from its SQLite database.

LocalFreeTypeScriptOther Tools & Integrations

N8N

15

AutomateLab-tech/n8n-mcp

Generate n8n workflow JSON from natural language, lint for deprecated nodes, missing typeVersion and broken connections, and debug per-node execution failures.

LocalFreeTypeScriptDeveloper Tools

OpenWand

15

SunnyLich/OpenWand

Read-only desktop context through OpenWand: current selection, clipboard, active window, browser page and screen.

LocalFreePythonCommand Line & OS Automation

Recallnest

15

AliceLJY/recallnest

Local-first memory for coding agents: hybrid vector/BM25 retrieval with reranking, knowledge graph, session checkpoint/resume and multi-scope isolation.

LocalFreeTypeScriptKnowledge, Memory & RAG

Reminder

15

arifszn/reminder-mcp

MCP server for scheduling and triggering reminders via Slack or Telegram.

LocalFreeCommunication

Runtime Guard

15

runtimeguard/runtime-guard

Runtime policy enforcement for AI agents that prevents accidental system damage and unauthorized access, with automatic backups before file writes.

LocalFreePythonSecurity & Identity

Sint Protocol

15

sint-ai/sint-protocol

MCP governance proxy with capability tokens, tiered approvals, fail-closed execution and tamper-evident audit receipts, plus preflight tool-risk scanning.

LocalFreeTypeScriptSecurity & Identity

acrawl

15

Mingye-Lu/AgenticCrawler

Autonomous, goal-driven LLM web crawler with stealth browsing, distributed as a single binary.

LocalFreeRustBrowser Automation

Agent Memory

15

xChuCx/agent-memory

Git-native project memory for coding agents: Markdown in your repo, reviewable staged updates, secret/PII-safe and branch-aware, without cloud or vector DB.

LocalFreeGoKnowledge, Memory & RAG

Agent Skill Loader

15310

back1ply/agent-skill-loader

Load Claude Code skills into agents without copying files: discover, read and install skills on demand.

LocalFreeTypeScriptDeveloper Tools

ASP.NET Core Debugger

15

magna-nz/aspnetcore-debugger-mcp

Interactive .NET/ASP.NET Core debugging via netcoredbg: breakpoints, stepping, thread inspection, exception and deadlock analysis, and request tracing.

LocalFreeC#Developer Tools

Claudia

15136

yuvalsuede/claudia

Task management for Claude agents: hierarchical tasks, dependencies, sprints, acceptance criteria and multi-agent coordination.

LocalFreeTypeScriptProductivity & Project Management

Cochlea

15

richer-richard/cochlea

Offline, deterministic audio engine: compose scores as data, render WAV or FLAC, report loudness, pitch, tempo and key, generate spectrograms and diff renders.

LocalFreeRustMultimedia, Audio & Video

CogniRepo

15

ashlesh-t/cognirepo

Persistent memory and codebase context for coding agents: FAISS vector store, AST symbol index, knowledge graph, episodic journal and cross-agent handoff.

LocalFreePythonKnowledge, Memory & RAG

DataCharter

15

datacharter/datacharter

Local, contract-governed federation across files and databases (Postgres, Snowflake, BigQuery, DuckDB, Excel) with read-only guards and PII masking.

LocalFreePythonDatabases

KiCad Tools

15

ProductOfAmerica/mcp-server-kicad

KiCad EDA automation: schematic capture, PCB layout, ERC, DRC and Gerber, BOM and 3D exports for KiCad 9 and 10.

LocalFreePythonIoT, Home & Embedded

Lit Forge

2389

noblabs/lit-forge-mcp

Personal asset planning for Japan's Tsumitate NISA and iDeCo: NISA simulations, retirement gap analysis, required monthly savings and compound interest.

LocalFreeTypeScriptFinance, Fintech & Payments

magents

15

abnegate/magents

Shared session bus for coding agents such as Claude Code, Codex and Grok: list, read, hand off, message and spawn live agent sessions via MCP or CLI.

LocalFreeRustAI Agents & Coding Agents

NexusMem

15287

yaminbkk/NexusMem

Correlates failed shell commands and their exit codes with whatever later fixed them, alongside git diffs and docs, stored locally in SQLite.

LocalFreeTypeScriptKnowledge, Memory & RAG

Package Health

1431

orcsnren/pkg-health-mcp

Is this dependency still maintained? Scores npm packages, PyPI packages and GitHub repositories 0-100 with an A-F grade and plain-language risks (deprecated, archived, single maintainer, unanswered issues). Scans package.json, requirements.txt and lock files. No API key needed.

LocalFreeTypeScriptDeveloper Tools

Peckish — DoorDash ordering

0444

CydVilla/peckish

Order food and groceries on DoorDash via its CLI (macOS arm64): search stores, compare fee-included totals, build carts; orders need user approval.

LocalFreeTypeScriptE-Commerce & Delivery

Pubcrawl

15

nickjlamb/pubcrawl

PubMed, Europe PMC (including preprints), FDA/DailyMed and UK eMC drug labelling, and ClinicalTrials.gov for AI assistants, including side-by-side US vs UK label comparison. Every result cites its PMID, NCT ID or DOI; no API key required.

LocalFreeTypeScriptScience & Research

s-gw

15

sgateway/s-gw

Local credential gateway for coding agents: agents get handles instead of raw secrets, and one-time approvals inject credentials only into approved commands.

LocalFreeTypeScriptSecurity & Identity

Scopeblind Gateway

11134

tomjwxf/scopeblind-gateway

Security gateway that wraps MCP servers with per-tool policies, approval gates and optional signed receipts, in shadow (log-only) or enforce mode.

LocalFreeTypeScriptSecurity & Identity

SCORM Packager (HTML → SCORM 2004)

6268

giacomomaria81/scorm-mcp-server

Package HTML, Claude Design bundles or mobile-learning exports as SCORM 2004/1.2 courses with milestone and question tracking, and validate SCORM zips.

LocalFreeTypeScriptEducation

Texel

0453

Brunovncs/texel-mcp

Minecraft skins and textures as code: JSON specs compiled to PNG, with a review an agent can act on. Skins, 57 mob textures, blocks, items, GUI and particles, animated or glowing, and resource packs it builds and checks.

LocalFreeTypeScriptGaming

Toolkit

3351

Nishant-Chaudhary5338/mcp-toolkit

React/TypeScript development toolkit: component scaffolding, dependency audits, WCAG checks, test generation, type enforcement and monorepo management.

LocalFreeTypeScriptDeveloper Tools

YADE

15

yusong652/yade-mcp

YADE discrete element method (DEM) simulation: search API docs, run code via a REPL or background tasks, monitor progress and review task history.

LocalFreePythonScience & Research

Admob

6263

ParkSangGwon/admob-mcp-server

MCP server for the Google AdMob API — apps, ad units, mediation, and revenue reports

LocalFreeMarketing

Agent Hub

0459

blackaxgit/agent-mcp-hub

One MCP server bridging the Codex, Cursor, OpenCode, Claude, and Antigravity CLI agents

LocalFreeAI Agents & Coding Agents

airlock

15

Shalimov04/mcp-airlock

Governance proxy for MCP servers: allowlist, forced dry run, human confirmation, blast radius, audit

LocalFreeOther Tools & Integrations

Android

15

us-all/android-mcp-server

Android MCP — ADB-based device, apps, UI, logcat, emulator, files, system, debug

LocalFreeOther Tools & Integrations

Austrian Parliament (Nationalrat, Bundesrat)

0453

bernhardbrugger/parlament-at-mcp

Austrian Parliament: search speeches, votes, bills, inquiries, committees and members

LocalFreeSearch & Web Scraping

Ayudas es

0444

plopez053/ayudas-es-mcp

Ayudas y subvenciones de España (BDNS) y BOE en directo: recuentos, plazos y calendario previsto.

LocalFreeProductivity & Project Management

BPMN Kit

15

bpmnkit/bpmnkit

Create, validate, simulate and deploy Camunda 8 BPMN processes, forms and DMN from an agent.

LocalFreeAI Agents & Coding Agents

Brandsystem

15

Brandcode-Studio/brandsystem-mcp

Use existing brand guidelines with AI. Turn websites, PDFs, and Figma into a .brand runtime.

LocalFreeOther Tools & Integrations

Camoufox

7231

baixianger/camoufox-mcp

Anti-detection browser automation with Camoufox - stealth Firefox for web scraping

LocalFreeBrowser Automation

Cohort

1408

magnusmage/cohort

Shared AI memory for teams: a git vault of markdown, human-approved, injection-safe, local-only.

LocalFreeVersion Control

Convexity js

444

bayesian-energy/convexity-js

Build, edit, solve and analyse Convexity energy-system models from any MCP client; drives the app.

LocalFreeAI Agents & Coding Agents

Créavores AEO Audit

0455

tresor4k/creavores-aeo-mcp

AEO audit of any URL + French open data: website prices, public tenders, editorial calendar.

LocalFreeProductivity & Project Management

CvLAC (MinCiencias)

1423

stivenson/cvlac-mcp

Update your Colombian CvLAC (MinCiencias) research CV by chatting with your AI assistant.

LocalFreeCommunication

Dualtran

0454

seigwen/dualtran-mcp

Translate text with Google or your own AI model (BYOK, 20+ providers) from any MCP client.

LocalFreeAI Agents & Coding Agents

eVerbary Certified Translations

0457

everbary/everbary-mcp

Quote, order and pay for certified translations from AI assistants, with price preview and limits.

Local + RemoteFreeE-Commerce & Delivery

FitFileSize

1406

Gautamstar/fitfilesize

Compress PDFs and images, iPhone HEIC too, to fit an upload limit or a form's rules.

LocalFreeMultimedia, Audio & Video

Frugal Blender

15

mohakmalviya/frugal-blender-mcp

Let AI agents build Blender scenes with four compact tools: discover, execute, inspect, capture.

LocalFreeAI Agents & Coding Agents

GPU

15

pmady/gpu-mcp-server

NVIDIA GPU metrics as MCP tools — utilization, memory, temperature, power. Supports MIG.

LocalFreeKnowledge, Memory & RAG

Hydroxyl

0457

trebeljahr/hydroxyl.app

Local stdio MCP server: publication figures, structure checks and conversions for AI assistants

LocalFreeOther Tools & Integrations