Free MCP servers · page 139

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 6625–6672

Space Standards

1

manojknaikade/space-standards-mcp

Cited, requirement-level Q&A over ECSS and NASA standards you supply (bring your own documents)

LocalFreeOther Tools & Integrations

Spark SQL

1

aidancorrell/spark-sql-mcp-server

Query Spark SQL clusters via Thrift/HiveServer2. Works with Spark, EMR, Hive, Impala.

LocalFreeDatabases

speedread

1

brennengreen/speedread

Token-efficient code reading for coding agents: symbol-aware, budgeted, diff-aware reads.

LocalFreeAI Agents & Coding Agents

Spendlog

1336

makz81/spendlog

MCP server for expense tracking, invoices, budgets, and financial insights directly in Claude

LocalFreeFinance, Fintech & Payments

Spotify

1

NovaLux12/spotify-mcp-server

Spotify Web API MCP: playback, library, playlists, search, podcasts. Not affiliated with Spotify.

LocalFreeSearch & Web Scraping

SQLite Local AI Memory

11.6k

cheveguerra/sqlite-local-ai-memory

100% In-Process Bare-Metal Hybrid Memory Engine & MCP Server for LLMs (SQLite + Int8 Vectors).

LocalFreeDatabases

SSH Host Storage & Remote Exec

1

xlbbb-cn/mcp_ssh_exec_cmd

Stdio MCP server for SSH host storage and remote command execution with a connection-pool monitor.

LocalFreeMonitoring & Observability

SSRS2

1

AntoineGou/SSRS2

Markdown to editable PowerPoint, Word, PDF; checks, edits and previews RDLC/RDL reports.

Local + RemoteFreeOther Tools & Integrations

ssyubix-pixelart

1

syuaibsyuaib/ssyubix-pixelart-mcp

Draw pixel-art tiles and tilesets for 2D games, with PNG+metadata export for Unity.

LocalFreeOther Tools & Integrations

Stackexchange

1

pipeworx-io/mcp-stackexchange

StackExchange MCP — wraps the StackExchange API v2.3 (free, no auth required for read)

Local + RemoteFreeSecurity & Identity

Steam

1

Playtide-studios/steam-mcp

Steam market intelligence MCP server for game developers: app search, trends, reviews, news.

LocalFreeSearch & Web Scraping

Steelmind

1

stabgan/steelmind-mcp

Structured thinking + steel-manning verification for AI agents. Backed by 43+ papers.

LocalFreeAI Agents & Coding Agents

Stellar Agent Search

1116

berkingurcan/stellar-agent-search

Discover and rank Stellar 8004 agents with a read-only MCP server and fail-closed contract probes.

LocalFreeSearch & Web Scraping

STIG

1

jeneric/STIG-MCP

MCP server: MITRE ATT&CK® -> NIST 800-53r5 -> DISA STIG fix/check steps, mitigations and detections

LocalFreeOther Tools & Integrations

Storepilot

1

sonlenef/storepilot-mcp

Run an app portfolio across Google Play and the App Store: vitals, reviews, earnings, releases.

LocalFreeOther Tools & Integrations

Stratum

1

smartmemory/stratum

Structured execution for coding agents: contracts, postconditions, gates, guardrails.

LocalFreeAI Agents & Coding Agents

Strava Training

1

ArjanLig/strava-mcp

Connect Strava training data to Claude for training load analysis and activity insights

LocalFreeAI Agents & Coding Agents

Structured Address Fix

1

sebastienrousseau/structured-address-fix-mcp

MCP server for ISO 20022 postal-address remediation ahead of the Nov 2026 CBPR+ cliff.

LocalFreeOther Tools & Integrations

Studio Sidecar

1

gjlmotea/studio-sidecar-mcp

Companion to Roblox Studio's built-in MCP: open places, guard writes, Open Cloud asset uploads.

LocalFreeOther Tools & Integrations

Substrate b

1119

manuelinuxkr/substrate-b

Token-first headless browser for AIs. Extracts a tiny semantic graph, cutting HTML bloat by 95%.

LocalFreeBrowser Automation

SupaForge

1

akalsoftware/supaforge

Find and fix drift between Supabase environments: schema, RLS, roles, auth, storage and more.

LocalFreeDatabases

Swarm at Ledger

1

Mediaeater/swarm-at-ledger

Settlement protocol for AI agent swarms — hash-chained ledger, trust, 48 blueprints, 18 tools

Local + RemoteFreeAI Agents & Coding Agents

Swiss Academic Libraries

1

malkreide/swiss-academic-libraries-mcp

Swiss academic libraries + open-access Swiss legal literature (SRU/OAI-PMH, no API key)

LocalFreeDeveloper Tools

Swiss Courts

1

malkreide/swiss-courts-mcp

Swiss court decisions via entscheidsuche.ch, including federal and cantonal courts

LocalFreeOther Tools & Integrations

Swiss Housing

1

malkreide/swiss-housing-mcp

Swiss Register of Buildings and Dwellings (GWR/RegBL): EGID/EWID lookup, geocoding, housing stats

LocalFreeLocation & Travel

Swiss Public Transport

1

tpjnorton/swiss-public-transport-mcp

Swiss public transport — journey planning, live stationboards, delays, and SBB ticket links.

LocalFreeOther Tools & Integrations

Switchboard

1

Jemplayer82/mcp-switchboard

Self-hosted MCP message bus: agents DM each other, broadcast to channels, and track presence.

LocalFreeAI Agents & Coding Agents

Switzerland Parliament

1

cyanheads/switzerland-parliament-mcp-server

Search Swiss parliamentary business, votes, debates, members, and declared interests.

Local + RemoteFreeSearch & Web Scraping

Symmap

1

pipeworx-io/mcp-symmap

SymMap v2 — Traditional Chinese Medicine association graph from symmap.org (Beijing University of…

Local + RemoteFreeOther Tools & Integrations

SYNAPSE CHANNEL

1

anulum/synapse-channel

Local-first multi-agent coordination for messages, leases, shared plans, status, and resources.

LocalFreeAI Agents & Coding Agents

SynapseAudit

1

digidenone/SynapseAudit

AI-Powered Security Scanner for LLMs. Detects vulnerabilities and syncs with SynapseAudit.

LocalFreeSecurity & Identity

Sysdesign Board

1168

tGhattas/sysdesign-board

Hand-drawn whiteboard for system design mock interviews; your AI watches, asks and gives feedback.

LocalFreeOther Tools & Integrations

Taaghche

1

sepehr071/taaghche-mcp

Unofficial read-only Taaghche: search Persian ebooks and audiobooks, compare prices, read reviews.

LocalFreeSearch & Web Scraping

Tailscale

1

TMHSDigital/tailscale-mcp

Let AI agents see and use your tailnet: status, SSH config, Serve/Funnel sharing, ping matrix

LocalFreeAI Agents & Coding Agents

Taiwan Patent

1

aa0101181514/tw-patent-mcp

Patent search via Taiwan IPO GPSS and EPO OPS: legal status, families, full text, PDFs

LocalFreeSearch & Web Scraping

Tanpin

1

willykeenan/tanpin

Item-by-item inventory that reorders itself: per-SKU forecasts, purchase orders and ETAs.

LocalFreeE-Commerce & Delivery

TeamMemory

1

ysydhc/team_memory

Team experience database - let AI accumulate, retrieve and apply team knowledge across chats.

LocalFreeDatabases

Telegram Context

1

egor-fedorov/telegram-mcp

Read permitted Telegram chats, retrieve original posts and files, and track changes locally.

LocalFreeCommunication

Termdat

1

malkreide/termdat-mcp

MCP server for TERMDAT — the terminology database of the Swiss Federal Administration

LocalFreeDatabases

terminal-use

1993

computer-agent-labs/terminal-use

Lets AI agents drive a real terminal: type, press keys, click, read the screen, take screenshots.

LocalFreeBrowser Automation

Terraform CWD

1

YawLabs/terraform-cwd-mcp

Terraform working-dir truth: pinned provider schemas, plans, state, modules, upgrade impact

LocalFreeCloud Platforms

Tether

1

sidyellur/tether

Local-first agent memory over SQLite: remember, recall, link, forget. Degrades, never fails.

LocalFreeDatabases

Tetrad

1

SamoraDC/Tetrad

Quadruple consensus MCP server for code validation using Codex, Gemini, and Qwen

LocalFreeDeveloper Tools

Text to Speech

1

Engr-FaizanAli/text-to-speech-mcp

Reads text aloud locally on Windows, macOS, and Linux. No API key, account, or cloud service.

LocalFreeMultimedia, Audio & Video

text-to-reality

1

ai-wes/text-to-reality

Turn an idea into a device anyone can build: parts, printed parts, wiring, code and a picture guide.

LocalFreeDeveloper Tools

text2sql

1

cpenniman12/text2sql-mcp

Ask any SQL database in natural language. Agent explores schema, writes SQL, self-corrects.

LocalFreeDatabases

Tfl

1

oneill9/tfl-mcp-server

Community-built server providing real-time London transport data via the TfL Unified API

LocalFreeDeveloper Tools

Tga Artg

1

pipeworx-io/mcp-tga-artg

TGA ARTG — the Australian Register of Therapeutic Goods, the Therapeutic Goods Administration's…

Local + RemoteFreeOther Tools & Integrations