Free MCP servers · page 77

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 3649–3696

Romm

6

lodordev/mcp-romm

Read-only access to the RomM retro game library manager: platforms, ROM search, metadata, collections, saves, firmware, devices and tasks.

LocalFreePythonGaming

Steam

6

jkiley129/steam-mcp

Query your Steam library: games, playtime, recently played titles and store metadata.

LocalFreeTypeScriptGaming

TechTrend

6

salwks/mcp-techTrend

Academic, code and medical-regulatory trend monitoring across arXiv, PubMed, GitHub, Hugging Face and openFDA, with newspaper-style briefings.

LocalFreePythonScience & Research

Tmux

6

laszlopere/mcp-tmux

Drive tmux locally or over SSH: sessions, windows, panes, keystrokes, pane capture and raw commands, with shared sessions for pair programming.

LocalFreePythonCommand Line & OS Automation

Verify

6

ScopeBlind/verify-mcp

Offline verification of Ed25519/JCS-signed artifacts such as receipts, manifests and audit bundles.

LocalFreeTypeScriptSecurity & Identity

Waypath

6

TheStack-ai/waypath

Local-first memory CLI for coding agents: SQLite-backed context, graph-aware recall via FTS5 and RRF, and governed memory with promote and review gates.

LocalFreeTypeScriptKnowledge, Memory & RAG

Website Snapshot

6

gustavo-meilus/mcp-web-snapshot

A MCP server that provides comprehensive website snapshot capabilities using Playwright. This server enables LLMs to capture and analyze web pages through structured accessibility snapshots, network monitoring, and console message collection.

LocalFreeBrowser Automation

wp CLI

6

mvtandas/wp-cli-mcp

WordPress management via WP-CLI, locally or over SSH: themes, plugins, posts, menus, users, database, scaffolding and cache.

LocalFreeTypeScriptDeveloper Tools

agentmem

6

Thezenmonster/agentmem

Governed memory for coding agents with trust lifecycle (hypothesis, active, validated, deprecated), conflict detection, staleness tracking and health scoring.

LocalFreePythonKnowledge, Memory & RAG

Aurora

6

FantasyLab-ai/aurora

Transparent statistical analysis with cited findings, integrity-hashed result bundles and a calibration corpus of measured detector false-fire rates.

LocalFreePythonData Science & Visualization

Blank Invoice Maker

1161

InnarM/blank-invoice-maker-mcp

Create invoices via a deep link that opens Blank Invoice Maker pre-filled, then review and download the PDF; invoice data stays in the browser.

LocalFreeTypeScriptFinance, Fintech & Payments

Connectrylab Architect Cert

185

Connectry-io/connectrylab-architect-cert-mcp

Claude Certified Architect exam prep: scenario-based questions, practice exams, concept handouts, a guided capstone build and spaced repetition.

LocalFreeTypeScriptEducation

Contentrain

6

Contentrain/ai

Local-first content governance: model and content CRUD, validation, normalization and i18n across any framework.

Local + RemoteFreeTypeScriptDeveloper Tools

culprit

6

noordeen123/culprit

Offline root-cause analysis for coding agents: rank the commit that introduced a regression, map a feature's blast radius and verify a fix is complete.

LocalFreePythonVersion Control

Dbridge

2106

ugurcl/dbridge-mcp

Query SQLite, PostgreSQL and MySQL in plain language, read-only, with column hiding and masking, row caps, timeouts, cost-based rejection and rate limiting.

LocalFreeTypeScriptDatabases

debuff

6

debuffjp/debuff

Let coding agents play, test and tune 2D browser games made with debuff: attach to the game you have open or a headless copy, read live state, explained source-mapped errors and frame timings, tune typed params, rewind, replay and fuzz, and verify with deterministic scenarios.

LocalFreeTypeScriptGaming

diffctx

6

nikolay-e/diffctx

Selects the minimum code context needed to understand a git diff, using deterministic graph-based fragment selection under a token budget.

LocalFreePythonVersion Control

Eco Router

1152

stevensu04/eco-router-mcp

Picks the lowest-carbon AWS, Google Cloud or Azure region for a workload. Maps all 134 public regions to their electricity grids and ranks them by carbon intensity and estimated latency, with EU/EEA data residency filters. find_clean_window finds the cleanest start time for batch jobs over the next 72 hours. Works without an API key using annual averages (grid-level for the US and Canada); add an Electricity Maps token for live data and forecasts. npx -y eco-router-mcp

LocalFreeTypeScriptEnvironment & Nature

Ennodia

6516

cherninlab/ennodia

Delegates tasks between local coding-agent CLIs, including Claude Code, Codex, OpenCode and Antigravity, and returns results to the calling agent.

LocalFreeTypeScriptAI Agents & Coding Agents

Foodblock

1140

FoodXDevelopment/foodblock

Turn plain-English food descriptions into structured, content-addressed data blocks for ingredients, products, places, actors and more.

LocalFreeTypeScriptOther Tools & Integrations

Foundersignal

1162

carlosalvite/foundersignal-mcp

SaaS idea research: revenue data, growth signals and pain points aggregated from AppSumo, TrustMRR, Product Hunt, Indie Hackers, Reddit and more.

LocalFreeTypeScriptMarketing

Garmin Connect Workouts

0172

slaat/garmin-connect-workouts-mcp

Create structured Garmin Connect workouts from natural language: pace, HR, power and cadence targets, repeat blocks, swim strokes and pool lengths.

LocalFreeTypeScriptSports

Geogebra

0170

haison8x/geogebra-mcp

Draw and edit plane-geometry figures live in GeoGebra Calculator: run constructions, inspect objects, verify properties (angles, collinearity, midpoints) and take screenshots so the AI can fix its own figure.

LocalFreeTypeScriptEducation

GreenCalculus

177

Sourced greenhouse-gas emission factors and audit-traced carbon calculations.

Local + RemoteFreeEnvironment & Nature

GroundTruth

6

rm-rf-prod/GroundTruth-MCP

Self-hosted live library docs, code audits with file:line findings, BM25-ranked snippets and lockfile-aware version pinning.

LocalFreeTypeScriptDeveloper Tools

Guardvibe

66.8k

goklab/guardvibe

Security scanner for vibe-coded apps (Next.js, Supabase, Stripe, Prisma and more): taint analysis, auto-fix, SARIF export, pre-commit hook and CVE detection.

LocalFreeTypeScriptSecurity & Identity

HeadlessTracker

6384

tamasPetki/HeadlessTracker

Local-first crypto portfolio aggregation across Bybit, Binance, EVM and Solana wallets and Polymarket, with read-only credentials in the OS keychain.

LocalFreeTypeScriptFinance, Fintech & Payments

Lachesis

6

UnboundCompute/lachesis

Code property graph for C, Python and TypeScript: callers/callees, data and taint flow with source-to-sink witnesses, points-to and guard/sink structure.

LocalFreePythonSecurity & Identity

LLM Usage

6

zhaoyue722/llm-usage-mcp

Local LLM API cost tracking for Anthropic, OpenAI, Qwen and DeepSeek: SQLite usage ledger, spend queries, provider comparison and CNY to USD conversion.

LocalFreePythonMonitoring & Observability

mcpwall

186

behrensd/mcp-firewall

Deterministic security proxy for MCP that intercepts tool calls, enforces YAML policies, scans for secret leakage and logs everything.

LocalFreeTypeScriptSecurity & Identity

Mindmap

6

ravi-labs/mindmap-mcp-server

Local-first memory and context handoff across AI tools, with graceful decay, a persona layer and a portable memory passport.

LocalFreeTypeScriptKnowledge, Memory & RAG

MoltNode by Chord

1161

tuantqse90/moltnode-mcp

MoltNode by Chord: read 31 blockchains over JSON-RPC (EVM, Solana, Sui) and get best-route DEX swap quotes with the unsigned transaction and a simulation via Chord on 7 EVM chains. Hosted at https://moltnode.ag/mcp, no API key, non-custodial.

Local + RemoteFreeTypeScriptFinance, Fintech & Payments

Munim

6

vishalsg42/munim

Multi-client MCP proxy: read across every client's accounts, write only to the named one, via providers' own MCP tools (Cloudflare, Vercel, Notion and more).

LocalFreePythonCloud Platforms

NativeKeel

618k

AlicanAkyol/nativekeel

Health check for React Native and Expo projects: upgrade blockers, New Architecture support, App Store and Google Play rejections, crash risks, OWASP MASVS security and accessibility findings, an ordered upgrade plan, library compatibility checks and release bundle measurement. Read-only; never runs project code.

LocalFreeTypeScriptDeveloper Tools

nodriver

6

andresolbach/nodriver-mcp-server

Undetected Chrome automation via nodriver for anti-bot protected sites: accessibility snapshots, input automation, network inspection and persistent sessions.

LocalFreePythonBrowser Automation

open-memex

68.3k

stoneskin/open-memex

Local-first persistent memory for AI coding agents: plain Markdown as the source of truth with SQLite FTS5 search, one memory shared across VS Code, Visual Studio, Cursor, opencode and Claude Code, and team sharing via git PRs.

LocalFreeTypeScriptKnowledge, Memory & RAG

Orchestrator

6

rupinder2/mcp-orchestrator

Hub that aggregates tools from multiple MCP servers with unified BM25 and regex search and deferred loading.

LocalFreePythonAggregators & Gateways

oxidize-pdf

6

bzsanti/oxidize-python

PDF toolkit: create and analyze PDFs, extract text for RAG, convert to Markdown, split and merge pages, add annotations and form fields, and encrypt files.

LocalFreePythonFile Systems & Storage

Pfsense

6

antonio-mello-ai/mcp-pfsense

Manage pfSense firewalls: rules, DHCP leases, DNS overrides, gateway monitoring, ARP table and services, with two-step confirmation for destructive actions.

LocalFreePythonCloud Platforms

PlatformIO

6

powerdragonfire/platformio.mcp

Build, flash and debug PlatformIO firmware: parsed compiler errors, serial monitoring, crash backtrace decoding, Unity tests and library management.

LocalFreePythonIoT, Home & Embedded

Proton Safe

6

fbossiere/proton-safe-mcp

Proton Mail access through the local Proton Mail Bridge: search and read emails, inspect attachments, and create drafts. No send, delete or move tools.

LocalFreePythonCommunication

Recon Crypto

169

szhygulin/recon-crypto-mcp

Self-custodial crypto portfolio: EVM balances and DeFi positions with risk alerts, plus unsigned transactions signed on a Ledger via WalletConnect.

LocalFreeTypeScriptFinance, Fintech & Payments

Remote OpenClaw

6173

aidevelopers2/remoteopenclaw-mcp

Search the Remote OpenClaw directory of MCP servers, agent skills and plugins for names, links and install commands; also available as a CLI.

LocalFreeTypeScriptAggregators & Gateways

Reuse Before Generate

6288

aradar46/reuse-before-generate

Checks if a project idea already exists on GitHub, npm or Python repositories and suggests maintained alternatives to extend instead of scaffolding anew.

LocalFreeTypeScriptDeveloper Tools

Rlg

6

sebastienrousseau/rlg

Log tools for on-call and SRE workflows over rlg (RustLogs) files: tail events by level or target, filter with JSON-path predicates and summarize errors.

LocalFreeRustDeveloper Tools

RugSnare

62.3k

Paraphern/rugsnare

Pin MCP tool contracts by hash and catch silent drift, rug pulls and per-client bait-and-switch after approval, with a CI gate, live stdio/HTTP proxies, canary replay, call policies and on-chain release verification.

LocalFreeTypeScriptSecurity & Identity

Rustpad

0170

ni-c/rustpad-mcp

Read and edit self-hosted Rustpad collaborative pads, merging edits live with human typing and requiring confirmation to replace a pad.

LocalFreeTypeScriptProductivity & Project Management

SmartCLI

6

dwgx/SmartCLI

Drive full-screen terminal programs such as vim, htop and lazygit by reading the screen as a live cell grid with cursor, selection and alt-screen state.

LocalFreePythonCommand Line & OS Automation