Free MCP servers · page 227

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 10849–10896

slim-sheet

0

j4flmao/slim-sheet

Spreadsheet MCP for any agent: reads xlsx/xls/ods/csv, SQL, cleaning, formulas, safe edits

LocalFreeDatabases

Slimsnap

0

bickov/slimsnap-mcp

Your recent screen captures as structured JSON your AI agent can read. Local only, no network.

LocalFreeAI Agents & Coding Agents

Slingshot brand kit

0

slingshot-fyi/brand-kit

Slingshot's brand guides, design tokens and an off-brand colour check, for any MCP client.

LocalFreeOther Tools & Integrations

Slipmark

0693

founder-ship-it/Slipmark

Record AI agent verdicts bound to file hashes; refuse ones whose files or instructions changed.

LocalFreeAI Agents & Coding Agents

Slipway

0

qompassai/slipway

Android build/sign/verify/install/release MCP server with measured certification gates.

LocalFreeOther Tools & Integrations

Slop Eval

0

RudrenduPaul/slop-eval

Wraps the slop-eval CLI as a single generic MCP tool for genericness scoring of AI UI output.

LocalFreeOther Tools & Integrations

Slotlock

0

PILOTAAI/slotlock

Calendars for AI agents: free/busy, next free slot, and bookings PostgreSQL never double-books.

LocalFreeDatabases

Smartpolicy

0

smartpolicy-protocol/smartpolicy

Runtime authorization for AI agents and smart contracts via an immutable on-chain policy registry

LocalFreeSecurity & Identity

Smarty

0

pipeworx-io/mcp-smarty

Smarty MCP — wraps Smarty's US Address Verification + US Property Enrichment APIs (smarty.com…

Local + RemoteFreeDeveloper Tools

SMB Sandbox

0

teamshift-io/smb-sandbox

Mock small-business CRM, inbox, calendar, invoicing and phone tools for testing AI agents safely.

LocalFreeProductivity & Project Management

Smoke Signal

smoke-signal-app/agent-plugin

Phone notifications and phone-answered questions for AI agents: notify and decision-request tools.

LocalFreeAI Agents & Coding Agents

SNAC Archives

0

ianderso/snac-archives-mcp

Find which archive holds the papers: SNAC's index of archival collections, plus ArchiveGrid links.

LocalFreeOther Tools & Integrations

SnapDoczilla

0

julvc/skills

Offline docs-as-code for any backend and frontend: a MkDocs site in your repo, by your AI agent.

LocalFreeProductivity & Project Management

Snipper

0

SnipperApp/snipper-mcp

Search, read, create and organise code snippets in SnipperApp 3, a native macOS snippet manager.

LocalFreeSearch & Web Scraping

SOC 2 Compliance

0

CSOAI-ORG/soc2-compliance-ai-mcp

SOC 2 Type II compliance for trust services criteria (security, availability, processing

LocalFreeSecurity & Identity

Social Search

0

shubhamekapure/social-search-mcp

Deep social media search for LLMs: Facebook, Reddit, LinkedIn, Instagram & more.

LocalFreeSearch & Web Scraping

Socialwtf

0

thepros2014/socialwtf-mcp

Give your AI agent a labeled, key-owned social identity on SocialWTF AI Commons.

LocalFreeSecurity & Identity

Softwareheritage

0

pipeworx-io/mcp-softwareheritage

Software Heritage MCP. The archive of public source code: which repositories have been archived…

Local + RemoteFreeDeveloper Tools

Soko

0

gabrielmahia/soko-mcp

Kenya commodity price tools on synthetic demo data: prices, trends, comparison, sell or hold.

LocalFreeOther Tools & Integrations

Solar Data

0

hoodsy/solar-data-mcp

US open solar data for agents: PVWatts production, tariffs & ROI, market data, forecasts. 18 tools.

LocalFreeAI Agents & Coding Agents

Solisk pc

0202

Kyzenkms/solisk-pc-mcp

Connect AI clients to local files, shell and desktop tools, with an optional self-hosted relay.

LocalFreeOther Tools & Integrations

Solitaire for Agents

PRDicta/Solitaire-for-Agents

Identity infrastructure for AI agents. Evolving persona, session continuity, self-tuning retrieval.

LocalFreeSecurity & Identity

Solradar

0

webios2026-byte/solradar-mcp

Solana meme-coin trust scores, rug-risk flags, and wallet analytics from SolRadar.

Local + RemoteFreeFinance, Fintech & Payments

SomaCheck Vibecheck

io.github.Sensie-agents/vibecheck

Body language for your agent: a consented 3-second gesture, Aligned or Unaligned with confidence.

Local + RemoteFreeAI Agents & Coding Agents

Sonenta

sonenta/tools

MCP server for Sonenta translation management: keys, translations, a11y, and source-health tools.

LocalFreeOther Tools & Integrations

Sos Entities

0

pipeworx-io/mcp-sos-entities

sos-entities — state business-entity registries in one normalised shape (fleet #2867).

Local + RemoteFreeOther Tools & Integrations

Sota Deploy

0

sota-deploy/mcp-server

Deploy web apps via AI agents with sota.io. 9 tools for deploy, logs, env, and more.

Local + RemoteFreeMonitoring & Observability

sota-anchor

0

luckmanqasim/sota-anchor

Finds what shipped after your coding agent's training, before it rebuilds it from scratch.

LocalFreeAI Agents & Coding Agents

sourcebolt

0208

candidloom-hub/sourcebolt

Fast MCP server for Google NotebookLM: notebooks, sources, cited chat, research. Unofficial.

LocalFreeCommunication

SourceHarbor

xiaojiou176-open/sourceharbor

Source-first AI knowledge control tower MCP server for YouTube, Bilibili, RSSHub, and RSS.

LocalFreeKnowledge, Memory & RAG

South Africa Tenders

0

pipeworx-io/mcp-south-africa-tenders

South Africa Government Procurement MCP — National Treasury eTenders / OCPO (keyless).

Local + RemoteFreeOther Tools & Integrations

South Dakota Code

0

pipeworx-io/mcp-south-dakota-code

South Dakota Codified Laws — state statutes by citation and by topic. Fleet #2748.

Local + RemoteFreeDeveloper Tools

Sovereign Gateway

0

mattijsmoens/sovereign-mcp-gateway

Gating proxy for MCP servers: policy, verification and one audit trail across upstreams.

LocalFreeOther Tools & Integrations

Sovereign Identity Wallet

0

TamTunnel/si-wallet-mcp

Self-hosted signing wallet: DIDs, agency grants, and task mandates for AI agents.

LocalFreeFinance, Fintech & Payments

Spaceweather

0

hoon1983/spaceweather-mcp

Space weather & geomagnetic conditions (NOAA SWPC, NASA DONKI, USGS, Kyoto) via MCP.

LocalFreeLocation & Travel

Spain Open Data

0

digvijaysingh-ai/spain-open-data-mcp

Market sizing, prices, rents, crime and locations in Spain from INE and other public data

Local + RemoteFreeLocation & Travel

Span

0

pontivus-com/span

Codebase understanding stored with its evidence, marked stale when that evidence changes.

LocalFreeDeveloper Tools

Spawner

01.6k

Flosk6/Spawner

Preview environments on your self-hosted Spawner server: a copy of your app for each git branch

LocalFreeVersion Control

Spec

0

evidence-readiness/spec

Checks agent traces for evidence-readiness: verifies evidence is present, not that it is true.

LocalFreeAI Agents & Coding Agents

specpack

0125

THE-KIPDEV/specpack

Audit and write CLAUDE.md / AGENTS.md / Cursor rules; generate full build specs for new projects.

Local + RemoteFreeProductivity & Project Management

speedrun.com

0

williamcodes/speedrun-mcp

speedrun.com records, leaderboards (subcategories, ILs), players, PBs, moderation. No key needed.

LocalFreeOther Tools & Integrations

SpineFrame

Ratnaditya-J/spineframe

Governance runtime for AI agents with signed provenance, compliance audits, and OSINT.

LocalFreeAI Agents & Coding Agents

spintax.net

net.spintax/mcp

Write, validate, render and analyze spintax templates. Backed by @spintax/core. No auth.

Local + RemoteFreeSecurity & Identity

Sponsorbook

0

Influship/sponsorbook-mcp

Research YouTube sponsors, inspect sponsorship evidence, and manage brand lists with Sponsorbook.

Local + RemoteFreeMultimedia, Audio & Video

Spoolis

com.spoolis/mcp

Verify AI work against criteria and get signed receipts. From Spoolis, guarantees for AI work.

Local + RemoteFreeOther Tools & Integrations

SportAPI

0

SportApi-net/sportapi-mcp

Live and Prematch sports odds, scores and statistics from SportAPI. Demo data without a key.

LocalFreeData Science & Visualization

Sportmonks

0

pipeworx-io/mcp-sportmonks

Sportmonks Football MCP — wraps the Sportmonks Football v3 API (docs.sportmonks.com/football).…

Local + RemoteFreeProductivity & Project Management

Sports Context Protocol

0142

Dswane/Sports-Context-Protocol

Self-learning operational context layer for AI sports agents. Profile 001: golf.

LocalFreeAI Agents & Coding Agents