Free MCP servers · page 108

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 5137–5184

Algora

2

idapixl/algora-mcp-server

Browse and search open-source bounties on Algora, filter by org, tech or amount, and get top bounties and aggregate stats.

LocalFreeTypeScriptKnowledge, Memory & RAG

Arc Gate

2

9hannahnine-jpg/arc-gate-mcp

Runtime governance for MCP tool calls that blocks prompt injection and capability abuse before tool results reach the agent.

LocalFreePythonSecurity & Identity

Ascended Browser

2

AceAtDev/ascended-browser

Local browser MCP for coding-agent QA with verified actions, screenshots, read-only network and console inspection, and interruption recovery warnings.

LocalFreePythonBrowser Automation

Astro Skill

2

adityarya24/astro-skill

Vedic astrology: kundali, Vimshottari dasha, panchang, gochar and Sade Sati, ashtakavarga, guna milan, divisional charts and Hindi janma patrika PDFs.

LocalFreePythonOther Tools & Integrations

Axiom Calculator

2

vdalhambra/axiom-calculator-mcp

Personal finance calculators: mortgage payments, compound interest, FIRE retirement number, loan comparison, true borrowing cost and debt payoff.

LocalFreePythonFinance, Fintech & Payments

Bastion

2

apatureai/bastion

Design review of rendered UI for coding agents: submit a preview URL, get findings with element references and recheck after fixing. Read-only.

LocalFreeTypeScriptDeveloper Tools

Boilerplate

2

shellsage-ai/mcp-server-boilerplate

Starter templates for MCP servers in TypeScript and Python, with tool, resource and prompt patterns.

LocalFreePythonDeveloper Tools

Bytesmith

2

laszlopere/mcp-bytesmith

Offline byte toolbox: hex/Base64/Base58 encoding, cryptographic and CRC hashing, base conversion, secure tokens, plus optional Ethereum/EVM tools.

LocalFreePythonSecurity & Identity

Calendar

2

wyattjoh/calendar-mcp

Access macOS Calendar events.

LocalFreeTypeScriptProductivity & Project Management

Catalysishub

2

QuentinCody/catalysishub-mcp-server

Unofficial access to the Catalysis Hub database: search and retrieve computational catalysis research and surface reaction data.

LocalFreePythonSearch & Web Scraping

Chaitin IP Intelligence

2

co0ontty/chaitin-ip-intelligence-search-tool

Search for IP addresses using Chaitin's IP Intelligence API.

LocalFreeSearch & Web Scraping

Code Indexer

2

Nishant-Chaudhary5338/mcp-code-indexer

Index TypeScript/React repos into a code graph: who-renders and who-calls queries, blast radius, dependency cycles, dead code and symbol signatures.

LocalFreeTypeScriptDeveloper Tools

Dibs

2

polymatx/dibs

Coordinate parallel coding agents: TTL file claims across git worktrees, hooks blocking colliding edits, presence, handoff notes and searchable lessons.

LocalFreeGoAI Agents & Coding Agents

Distill

2

juergenkoller-software/distill-mcp

Rename files with descriptive names via Distill, which analyzes PDF, OCR, Office, email and media content, with folder monitoring.

LocalFreeFile Systems & Storage

Dotnet Diagnostics

2

aayushmdesai/mcp-dotnet-diagnostics

Live .NET runtime diagnostics: find memory leaks, GC pressure, LOH fragmentation and thread starvation in any running .NET process without code changes.

LocalFreeMonitoring & Observability

Fetch Guard

2

Erodenn/fetch-guard

URL fetcher and HTML-to-Markdown converter with layered prompt injection defense: hidden-element sanitization, risk scanning and content boundary wrapping.

LocalFreePythonSecurity & Identity

Filesystem

2

LincolnBurrows2017/filesystem-mcp

File system operations: read, write, search, copy and move, with path restrictions.

LocalFreePythonFile Systems & Storage

Flamerobin

2

Michael2150/flamerobin-mcp-server

Access Firebird databases registered in FlameRobin: schema introspection, DDL/DML execution, execution plans and missing index analysis.

LocalFreeC#Databases

Git Context

2

muhannad-hash/git-context-mcp

Explains why code exists by tracing lines back to commits, GitHub PR descriptions and linked issues, plus file history, commit search and contributors.

LocalFreeTypeScriptDeveloper Tools

Git Insight

2

HasanJahidul/git-insight-mcp

Semantic git queries: blame grouped by author, introducing PR, co-change suggestions, branch hygiene, recent-work standups and full commit context.

LocalFreeTypeScriptVersion Control

Hocr

2

Wooonster/hocr_mcp_server

Extract handwritten math formulas from uploaded images as LaTeX using a vision-language model, with a Vue frontend.

LocalFreePythonDeveloper Tools

Jamjet Policy

2

jamjet-labs/jamjet-policy/mcp-shim

MCP interceptor that applies one YAML policy (block, require approval, audit, budget cap) to tool calls, also usable in Claude Code hooks and agent SDKs.

LocalFreeTypeScriptSecurity & Identity

Jira Github

2

TamarEngel/jira-github-mcp

Integrates Jira and GitHub to automate developer workflows from issue tracking to branches, commits, pull requests and merges.

LocalFreeDeveloper Tools

Keyneg

2

Osseni94/keyneg-mcp

Fine-grained sentiment analysis, keyword extraction and batch processing.

LocalFreePythonDatabases

Kodi

2

laszlopere/mcp-kodi

Control Kodi media players via JSON-RPC: playback, volume, library search, queue management and playback history across multiple instances.

LocalFreeC/C++IoT, Home & Embedded

Linkedin

2

abhineet34/linkedin-mcp-server

Create, edit and delete LinkedIn posts (text, image, article), upload images, fetch profiles, look up company pages and check follower counts.

LocalFreeTypeScriptSocial Media

Linux Tools

2

gerard-kanters/mcp-linux-tools

Administer a Linux server: read files and logs, manage systemd services and cron jobs, run read-only MySQL queries, WP-CLI, Git and sandboxed Python.

LocalFreePythonCommand Line & OS Automation

LoreRoom

2

fenghaochang/LoreRoom

Encrypted local memory for Claude Code Telegram bots: captures both sides of conversations, with SQLCipher encryption and CJK-friendly full-text search.

LocalFreeTypeScriptKnowledge, Memory & RAG

Memento

2

lfrmonteiro99/memento-mcp

Local-first memory for coding agents: stores facts, decisions, patterns and architecture notes in SQLite to reduce repeated context across sessions.

LocalFreeTypeScriptKnowledge, Memory & RAG

Memory

2

ShipItAndPray/mcp-memory

SQLite-based memory with exponential decay: memories strengthen on access and fade when unused, limiting unbounded context growth.

LocalFreeTypeScriptKnowledge, Memory & RAG

Misp

2

ppcvote/misp-mcp-server

Read-only MISP threat intelligence (events, attributes, search, tags, feeds, galaxies) with prompt injection scanning of every response.

LocalFreeTypeScriptSecurity & Identity

Moth

2

stfade/moth

Structured bug-fix analysis and project-local memory of verified fixes for coding agents.

LocalFreeTypeScriptDeveloper Tools

Notmuch

2

hgn/mcp-server-notmuch

Local Maildir access via notmuch: full-text search, tag filtering, threads, attachments and unanswered-mail tracking, with optional drafts and tagging.

LocalFreePythonCommunication

Orihime

2

srinivasan-sundaresan95/orihime

Cross-repository code knowledge graph for Java, Kotlin, JavaScript and TypeScript: call-flow tracing, taint analysis, reachability and license compliance.

LocalFreePythonSecurity & Identity

Plugwise

2

Tommertom/plugwise-mcp

Local Plugwise smart home control: network discovery, thermostats, switches, smart plugs, multi-hub management and real-time climate and energy tracking.

LocalFreeTypeScriptOther Tools & Integrations

Pox

2

davidlin2k/pox-mcp-server

Network control and management via the POX SDN controller.

LocalFreePythonDeveloper Tools

Proposalcraft

2

jabbawocky/proposalcraft

Draft client proposals in your own voice from a new brief, based on your saved past proposals, with local storage only.

LocalFreeTypeScriptAggregators & Gateways

Purroxy2

2

KuvopLLC/purroxy2

Record actions on any website and replay them in headless Playwright, with encrypted credentials and AI-based selector healing.

LocalFreeTypeScriptBrowser Automation

qa Probe

2

LS-SIEM-LLP/qa-probe

Probe live APIs and classify why each endpoint failed, with root cause, evidence and confidence. Supports FastAPI, Express, Next.js, tRPC and GraphQL.

LocalFreeTypeScriptE-Commerce & Delivery

Ragchat

2

gogabrielordonez/mcp-ragchat

Add RAG-based AI chat to any website: local vector store, OpenAI, Anthropic or Gemini models, a self-contained chat server and an embeddable widget.

LocalFreeTypeScriptKnowledge, Memory & RAG

Remote Call Ping Pong

2

kimtth/mcp-remote-call-ping-pong

Experimental, educational ping-pong server demonstrating remote MCP calls.

LocalFreePythonOther Tools & Integrations

Retrieval Lens

2

Vbj1808/retrieval-lens

Flight recorder for RAG retrieval: logs chunks, scores, sources and rankings to audit, replay and diff retrieval runs.

LocalFreeTypeScriptDeveloper Tools

RulesetMCP

2

n8daniels/RulesetMCP

Keeps agents grounded in project rules: query coding standards, validate snippets and get task-specific guidance from version-controlled rule files.

LocalFreeTypeScriptDeveloper Tools

Runecho

2

inth3shadows/runecho

Deterministic symbol oracle over a locally built index of the repo: whether a symbol exists, what a file declares, and what changed structurally since the last snapshot. Ships with a PreToolUse guard that stops an Edit/Write referencing a function, constant or type the repo does not declare, before the write lands. No LLM, no API keys, no network — the same code produces the same answer. Parsers for Go, Python, JS/TS, Rust, Ruby and shell. bash install.sh

LocalFreeGoDeveloper Tools

Selenium

2

seleniumboot/selenium-mcp

Selenium WebDriver automation with assertions and self-healing locators, plus code generation for Java, Python and C# test frameworks and CI pipelines.

LocalFreePythonBrowser Automation

Seshat BI

2

Kemetra/Seshat-BI

Read-only BI pipeline governance: each table's stage from source to Power BI, what blocks the next stage, static SQL/TMDL/PBIR checks and evidence packs.

LocalFreePythonDatabases

Shadcn Registry Manager

2

reuvenaor/shadcn-registry-manager

MCP server for Shadcn UI, enabling automated, remote, or containerized project management via local or remote registries.

LocalFreeProductivity & Project Management

Shield

2

muhannad-hash/mcp-shield

Pre-install security scanner for MCP servers: detects backdoors, exfiltration code, obfuscation, dangerous execution, prompt injection and supply chain risks.

LocalFreeTypeScriptSecurity & Identity