Free MCP servers · page 222

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 10609–10656

Reposcout

Rakesh1002/reposcout

Discover, enrich, and rank GitHub repos for an objective with weighted, evidence-based scoring.

LocalFreeVersion Control

Repovine

0271

legann/repovine

Checkout-local repository context graph over MCP; npx repovine setup wires skills, agents, hooks.

LocalFreeAI Agents & Coding Agents

Reprocheck

0

CloudCorpRecords/reprocheck

Red-first repro verifier: a fix counts only when the repro fails on the base and passes on the fix.

LocalFreeOther Tools & Integrations

Rescuegroups

0

pipeworx-io/mcp-rescuegroups

RescueGroups.org MCP — adoptable animals and the rescues/shelters that list them, from the…

Local + RemoteFreeOther Tools & Integrations

Research Chain

0

pipeworx-io/mcp-research-chain

One call, one paper: everything openly available around it — full text, license, datasets, code…

Local + RemoteFreeData Science & Visualization

Researchsearch

0

CloudCorpRecords/researchsearch

Web search, page extraction, crawling, and site mapping powered by the Tavily API.

LocalFreeSearch & Web Scraping

ResultGate

0

AHEDMUNI/resultgate

Local service recommendations for six providers, disclosed referrals and evidence checks.

LocalFreeOther Tools & Integrations

ResumeState

0

Resume-State/resumestate-mcp

Session continuity for AI assistants: resume any work lane where the last session stopped.

LocalFreeOther Tools & Integrations

RetentionCheck

brianfofficial/retentioncheck-v2

Pull churn from Stripe, Postgres, MySQL, or pasted feedback. AI-ranked drivers + fixes.

LocalFreeDatabases

retriEVAL

0

hcarrillo001/retrieval-mcp

LLM evals as MCP tools: score outputs for faithfulness, relevancy, and hallucination.

LocalFreeAI Agents & Coding Agents

Review Miner

0

alialtunar/review-miner-mcp

Find what users hate about competing apps and games: App Store and Steam reviews. No API keys.

LocalFreeDeveloper Tools

Revnuvo Trust

io.github.hardeyhemy/revnuvo-trust-mcp

Verify companies, domains and counterparties before transacting. Sanctions, UBO, fraud scoring.

Local + RemoteFreeOther Tools & Integrations

Revolut

jeff-nasseri/revolut-mcp

MCP server for the Revolut Business API: accounts, transactions, payments, FX, and more.

LocalFreeFinance, Fintech & Payments

RevRule by Payload

0

Payloadhq/revrule-mcp

RevRule by Payload: read entitlement graphs, review payout evidence, dry-run revenue events.

LocalFreeOther Tools & Integrations

Revternal

0

pipeworx-io/mcp-revternal

Revternal MCP — wraps Revternal's people/developer intelligence API (api.revternal.com), rebuilt…

Local + RemoteFreeDeveloper Tools

Rhein-Ruhr Fahrplan

0

MarcProe/rhein-ruhr-fahrplan-mcp

Public transit data for the Rhein-Ruhr region: live departures, trips, disruptions, GTFS schedules.

LocalFreeLocation & Travel

Rigelonchain

0

sylenzor/rigelonchain

Read-only Solana MCP: rug-risk, bundle & deployer checks, live market, full audit. No keys.

LocalFreeFinance, Fintech & Payments

Rihla

0

leojg/rihla

Flexible multi-leg, multi-airport flight search - cheapest valid combination across an itinerary.

LocalFreeSearch & Web Scraping

Rijksmuseum

0

pipeworx-io/mcp-rijksmuseum

Rijksmuseum — the Dutch national museum's collection, via its open Data Services API…

Local + RemoteFreeDeveloper Tools

Ritn3d

0

printplan3d/ritn3d-mcp

Tools for floor plan validation, GLB checks, and 3D-print unit math — Ritn3D companion.

LocalFreeOther Tools & Integrations

Rivet

dev.rivet/mcp

Manage Rivet Cloud namespaces and actors, run Code Mode, and open the Rivet Actor Inspector.

Local + RemoteFreeDeveloper Tools

Rls Check

0424

Muhandis-online/rls-check

Read-only Supabase RLS check: explains in Arabic which tables anyone can read or change. No keys.

LocalFreeDatabases

Rls Doctor

02.2k

subhajitlucky/rls-doctor

Read-only Postgres/Supabase RLS audit with a rolled-back probe that proves who can read which rows.

LocalFreeDatabases

Roast My Design System

7.7k

pencilrebel/roast-my-design-system

Audit your Design System and serve your Agent the rules that keep AI-written UI on-system.

LocalFreeAI Agents & Coding Agents

RoastPilot

0

syamaner/coffee-roaster-mcp

RoastPilot controls coffee roasting sessions through local stdio MCP tools and exports logs.

LocalFreeMonitoring & Observability

ROBINS-I V2

0

Black-Swan-Causal-Labs/robins-i-mcp

ROBINS-I V2 (not V1): risk of bias in one result of a non-randomized cohort study

LocalFreeOther Tools & Integrations

Robot Resources Router

robot-resources/robot-resources

Intelligent LLM routing proxy — 60-90% cost savings by auto-selecting the cheapest model

LocalFreeAI Agents & Coding Agents

RogerRat

111

opcastil11/rogerrat

Real-time chat hub for AI agents — Claude Code, Cursor, Cline, Codex over MCP or REST.

Local + RemoteFreeCommunication

RogerThat

0116

opcastil11/rogerthat

Real-time chat hub for AI agents — Claude Code, Cursor, Cline, Codex over MCP or REST.

Local + RemoteFreeCommunication

Rom

0

mrfentmen/rom-mcp

Search ROMs across Internet Archive, ROMsgames, CoolROM, and more. Verify checksums and parse saves.

LocalFreeSearch & Web Scraping

Romania

0

robyroro/romania-mcp

Romanian company reports, ONRC search, public contracts, VAT checks and local monitoring

LocalFreeSearch & Web Scraping

Rosh

0

rosh-studio/rosh-mcp

Create interactive web apps, games, and 3D scenes using Rosh — a plain-English language

LocalFreeOther Tools & Integrations

rostrum

0

girishkvs/rostrum

Clean up talk recordings: find redos, retakes and dead air, review every cut, render and verify.

LocalFreeOther Tools & Integrations

Rounder tools

0

adam-sari/rounder

Local PDF, image, archive and video tools for AI assistants. Files never leave your computer.

LocalFreeMultimedia, Audio & Video

Route6

0

route6me/mcp

Gives AI agents a public IPv6 identity, hostname, port forwarding, web fetch, team mesh. Free tier.

Local + RemoteFreeSecurity & Identity

Rove

noncelogic/rove

Rove — supervised browser for AI agents. Your agent drives; a human watches, takes over.

Local + RemoteFreeBrowser Automation

Rowbase

0

djstreet11/Rowbase

Safe, read-only-by-default MySQL, PostgreSQL & SQLite access for AI agents. TOON output.

LocalFreeDatabases

Rowih

0

rowih/rowih

Read, check and write Rowih, a language for AI agents whose moves state force, basis and authority

LocalFreeSecurity & Identity

Rowsend

0

rowsend/mcp

Draft and test marketing email for contacts in your own database, from a local desktop app.

LocalFreeDatabases

Roxyon Devtools

0

bea-technology/roxyon-devtools

Build LumenJS apps, use the Roxyon BaaS, and deploy apps and web projects to Roxyon infrastructure.

Local + RemoteFreeProductivity & Project Management

Roz

andypgray/roz-mcp

Roslyn-powered C# code navigation, blast-radius analysis, and verified edits for coding agents.

LocalFreeAI Agents & Coding Agents

Rs485

0

daedalus/mcp-rs485

MCP server that exposes RS485 bus connectivity for reading and writing serial data

LocalFreeOther Tools & Integrations

RSI Boot

0

Apollo-lwx/rsi-boot

Repo-bound memory and self-improving harness for AI coding agents — zero API keys.

LocalFreeKnowledge, Memory & RAG

Rss

mrfentmen/rss-mcp

RSS in one place: direct feed parsing and rss2json conversion for any feed URL. No key required.

LocalFreeOther Tools & Integrations

rubit-mcp-mail

0

bgalmes/rubit-mcp-mail

Read-only MCP server for your mail — provider-agnostic IMAP that never marks a message as read.

LocalFreeOther Tools & Integrations

Rubric py

0xsims/rubric-mcp-py

Attest agent decisions and verify records on a public ledger. Evidence, not just data.

LocalFreeAI Agents & Coding Agents

Rules

AKR1166/Rules-MCP

MCP for rules/skills/knowledge evaluation for Cursor, Claude, VS Code, and Antigravity.

LocalFreeKnowledge, Memory & RAG

Runeward

Runewardd/runeward

Governed execution cells for AI agents: Docker/K8s sandboxes with policy, audit, and approvals.

LocalFreeCloud Platforms