Free MCP servers · page 100

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 4753–4800

Architect

3

kannajune/mcp-architect

Local codebase architecture analysis: tech-stack overview, internal dependency graph with cycle detection, risk hotspots and module summaries.

LocalFreePythonE-Commerce & Delivery

Backlog

3

corbym/backlog-mcp

Read/write access to a story-based project backlog stored as markdown files in your repository: list stories, read content, update status and append notes.

LocalFreeGoProductivity & Project Management

Beeper

3

intentos-labs/beeper-mcp

BSC transactions: balance and token transfers, PancakeSwap token swaps and Beeper reward claims.

LocalFreePythonFinance, Fintech & Payments

Codebase Agent

3

FI-Mihej/codebase-agent-mcp

Delegates documentation and code analysis, including calls to other MCP servers, to a local or low-cost OpenAI-compatible LLM to save top-tier model tokens.

LocalFreePythonDeveloper Tools

Cyber Chef

3

noor202401938-netizen/cyber-chef-mcp

CyberChef MCP server providing 28 core data transformations, ciphers, hashing, JWT decoding, representation-calibrated Shannon entropy, and multi-layer payload deobfuscation for AI coding and security agents. npx -y @noorfatima123456/cyber-chef-mcp

LocalFreeTypeScriptSecurity & Identity

Cyberrescue

3

Vivekpatil200320/cyberrescue

Host-level telemetry gateway letting sandboxed agents fetch container logs and track kernel resource metrics.

LocalFreePythonDeveloper Tools

Docorbit

3

HakashiKatake/docorbit

Version-aware docs for coding agents: finds llms.txt, OpenAPI and skill specs, resolves dependency versions, detects pitfalls and verifies code.

LocalFreeTypeScriptDeveloper Tools

Doctor

3

realwigu/mcp-doctor

Diagnostics for MCP servers: discover client configs, test connections, audit security issues and benchmark latency.

LocalFreeTypeScriptBrowser Automation

Geond Agent Protocol

3

geondongkim/geond-agent-protocol

Local-first shared memory and coordination for coding agents on PostgreSQL/pgvector: repository evidence, reservations, handoffs and code graph context.

LocalFreePythonKnowledge, Memory & RAG

Git Context

3

TamiShaks-2/git-context-mcp

Structured Git repository analysis: project status, recent activity, code map and risk hotspots.

LocalFreePythonVersion Control

Gitopia

3

gitopia/gitopia-mcp-server

Gitopia decentralized Git: repos, issues, PRs, labels, releases, bounties and DAO proposals, with an approval mode for human-in-the-loop.

LocalFreeGoVersion Control

Immigration

3

tushariitr-19/immigration-mcp

US immigration guidance: live Visa Bulletin, priority date checks and explanations of immigration terms.

LocalFreeGoScience & Research

Inkcheck

3

chaoz23/inkcheck

CI for ink interactive-fiction stories: compiles, playtests every branch and finds runtime errors, unreachable knots and every distinct ending.

LocalFreeTypeScriptDeveloper Tools

Jev

3

wangkuangkuang/jev-mcp-server

Typed judgments from TypeSafe Jev: calibrated choice and score questions, A/B comparison, claim-vs-evidence verification and batch classification.

LocalFreePythonOther Tools & Integrations

Leadace

3

aitit-inc/leadace

Outbound sales for Claude Code: per-prospect website research, one email per prospect from your own Gmail, reply tracking and structured rejection feedback.

LocalFreeTypeScriptMarketing

Learn Shell

3

sf-shenfeng/learn-shell

Self-hosted teaching OS for agents: courses, lessons, FSRS flashcards, graded exercises, real-time teaching sessions and teaching memory.

LocalFreeTypeScriptEducation

Loopsense

3

jarvisassistantux/loopsense

Feedback loop for coding agents: CI monitoring, process watching, file change detection and HTTP polling.

LocalFreeTypeScriptDeveloper Tools

Manim Slides

3

antoniomachuca/MCP-Manim-Slides

Generate and render Manim-Slides presentations: run Manim code headlessly, compile to Reveal.js HTML, PDF or PPTX, and preview slides as images, videos or GIFs.

LocalFreePythonMultimedia, Audio & Video

Mibly Apple Health

3

littlenew117/mibly-apple-health-mcp

Apple Health data (sleep, steps, heart rate, HRV, workouts, body measurements) pushed from the Mibly iPhone app, stored encrypted on your own machine. Local-first, no cloud or telemetry.

LocalFreeTypeScriptHealth & Wellness

OntoPrune

3

vigmarcarlo/OntoPrune

Deterministic context pruning middleware for AI coding agents. Cuts input tokens by 60%, drops local CPU TTFT by 62%, and enforces formal IP isolation via AST-RDF contracts.

LocalFreePythonAI Agents & Coding Agents

Oyemi

3

Osseni94/oyemi-mcp

Deterministic, lexicon-based semantic word encoding and valence analysis: word-to-code mapping, semantic similarity and synonym/antonym lookup.

LocalFreePythonDatabases

Page Capture

3

chasesaurabh/mcp-page-capture

Capture webpage screenshots, viewport or full-page, as base64 PNG.

LocalFreeTypeScriptSearch & Web Scraping

Permisapi

3

Evan-Crx/permisapi-mcp

Search French building permits (Sitadel open data), cross-referenced with DVF transactions, PLU zoning and BRGM natural and technological risks.

LocalFreePythonDatabases

Personal Understanding

3

caix84476-netizen/personal-understanding

Verbatim-first personal memory: hashed word-for-word messages, records linked to their source quotes, anti-fabrication validators and an audit dashboard.

LocalFreePythonKnowledge, Memory & RAG

Pine

3

dmang-dev/mcp-pine

Memory read/write, save state slots and game metadata for PCSX2 and other emulators that support the PINE protocol.

LocalFreeTypeScriptGaming

Pktctl

3

TantiE100/pktctl

Drive Cisco Packet Tracer for CCNA labs: build and cable topologies, configure IOS, test with ping and simulation mode, and reach its whole IPC API over native PTMP.

LocalFreeRustEducation

pr Genius

3

zsxh1990/pr-genius

Pull request contribution advisor based on case studies from real repos: merge probability analysis, pattern matching and contribution strategy.

LocalFreePythonKnowledge, Memory & RAG

Precis

3

AirSaiga/Precis

Local-first data quality workbench for Excel/CSV: validate against schemas and 10 zero-code constraint types (uniqueness, ranges, foreign keys, allowed values and more), with row-level error reports. Also ships a visual desktop app, CLI and REST API.

LocalFreePythonDatabases

Querywise

3

kosminus/querywise-mcp

Query SQLite, PostgreSQL, BigQuery and Databricks in natural language through a business semantic layer: glossary, metrics and a data dictionary.

LocalFreePythonDatabases

Redis Monitor

3

antonio-mello-ai/mcp-redis-monitor

Read-only Redis monitoring: queue depths, Celery queue status, connected clients, server and memory stats, and key counts per database.

LocalFreePythonMonitoring & Observability

Repocontext

3

ILoveMyJay/repocontext

AST-based codebase map, token compression and context packaging for AI coding agents and IDEs.

LocalFreeTypeScriptDeveloper Tools

Salaah

3

yusufk/salaah-mcp

FastAPI and MCP service providing Islamic prayer times and other useful calculations.

LocalFreeOther Tools & Integrations

Scvd General Store Repo

3

seancrecord/scvd-general-store-repo/tab

Track agent tool spending with local, consent-gated JSONL storage.

LocalFreeTypeScriptMonitoring & Observability

Secure Fetch

3

appsec-innovation-labs/secure-mcp-fetch

Secure fetch to prevent access to local resources

LocalFreeOther Tools & Integrations

Shadowgraph

3

LiLara-AI/shadowgraph

Local-first decision memory for AI agents: stores choices, rejected alternatives and reasons, failed attempts, outcomes, provenance and review conditions.

LocalFreeTypeScriptKnowledge, Memory & RAG

Shahnameh

3

aliafsahnoudeh/shahnameh-mcp-server

Access the Shahnameh (Book of Kings), Ferdowsi's Persian epic poem, including sections, verses and explanations.

LocalFreePythonArt & Design

Solvitor

3

Adeptus-Innovatio/solvitor-mcp

Reverse engineering tools from Solvitor: extract IDL files from closed-source Solana smart contracts and decompile them.

LocalFreeRustSecurity & Identity

Sysmon

3

dragogargo/mcp-sysmon

Local system monitoring (CPU, memory, swap, disk, network) and process management: find resource-hungry processes, diagnose slowdowns and kill processes.

LocalFreePythonMonitoring & Observability

Taiga

3

negoro26/mcp-taiga

Taiga project management: issues, user stories, tasks, epics, sprints, comments, attachments and wiki via a compact set of tools.

LocalFreeTypeScriptProductivity & Project Management

Usemymac

3

yunfeng-enrich/usemymac

Turn a Mac into a remote computer-use server via CUA: screenshots, mouse, keyboard, windows and apps, token-protected and exposed through a Cloudflare tunnel.

LocalFreePythonCommand Line & OS Automation

Xadeus QQ

3

mouse114514/Xadeus-QQ-MCP

Control QQ via NapCatQQ (OneBot v11): send and receive messages, manage groups and wake the agent on incoming messages.

LocalFreePythonCommunication

Agent Gate

3

Jott2121/agent-gate

Lets agents gate their own work: a fail-closed ship checklist, independent refute-first review and a tamper-evident, hash-chained receipts ledger.

LocalFreePythonDeveloper Tools

Air Blackbox

3

airblackbox/air-blackbox-mcp

EU AI Act compliance scanner for Python AI agents (LangChain, CrewAI, AutoGen, OpenAI) with prompt injection detection, risk classification and fix generation.

LocalFreePythonSecurity & Identity

App Store Operator

3329

meyusufdemirci/app-store-operator

App Store research for iOS developers: ranked keyword search, competitor download, revenue and rating estimates, and localized In-App Event copy.

LocalFreeTypeScriptMarketing

Aria

3

pkotecha-eng/aria-mcp-server

Clinical research tools for trial coordinators and life sciences teams: real-time access to PubMed and ClinicalTrials.gov.

LocalFreePythonScience & Research

Astronomy Oracle

3478

gregario/astronomy-oracle

Astronomical catalog data and observing session planning: OpenNGC deep-sky objects with visibility, rise/transit/set and alt/az calculations.

LocalFreeTypeScriptScience & Research

Axiom — Advanced Math

3241

tufantunc/axiom-advanced-math-mcp

Offline exact symbolic math via the Giac/Xcas computer algebra system: calculus, equation solving, linear algebra, combinatorics and claim verification.

LocalFreeTypeScriptData Science & Visualization

Brewers Almanack

3945

gregario/brewers-almanack

Brewing knowledge: BJCP 2021 beer styles, hop varieties, malts, yeasts, water profiles, off-flavour diagnosis, recipe suggestions and food pairings.

LocalFreeTypeScriptKnowledge, Memory & RAG