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Free MCP servers and Claude skills

Free MCP servers (connectors) and skills for Claude and Claude Code.

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OpenRegistryData and analytics · MCPOpenRegistryLive data from 80+ official national company registries. Unmodified. For KYB and due diligence.No reviewsFreeBooks & Papers MCP Server screenshot 1Development · MCPBooks & Papers MCP ServerFederated search of books and papers, formatted citations, open-access retrieval and reading.No reviewsFreeBeancount.io screenshot 1Finance · MCPBeancount.ioQuery, edit, and reconcile a hosted Beancount ledger: BQL, reports, files, and bank imports.No reviewsFreeSpytrendMarketing · MCPSpytrendAnalytics, advertising: Facebook/Meta, TikTok, competitor ads. Free plan; Spytrend OAuth in browserNo reviewsFreeFront-End ChecklistDevelopment · MCPFront-End ChecklistReview front-end code and live pages against 386 web development rules, from Claude.No reviewsFreeCall MeProductivity · MCPCall MeYour AI rings your iPhone, speaks its question, and gets your spoken answer back as text.No reviewsFreeBilig WorkPaper screenshot 1Development · MCPBilig WorkPaperFormula-backed WorkPaper tools for workbook readback, input edits, and JSON persistence.No reviewsFreeXposedOrNot Breach IntelligenceMarketing · MCPXposedOrNot Breach IntelligenceReal-time data-breach lookup and analytics for emails and domains from XposedOrNot.No reviewsFreeNimrodProductivity · MCPNimrodWeb search with quality scores; web pages are read on your computer by the local server.No reviewsFreeAds Manager by AdKit: Google Ads, Meta Ads, TikTok Ads, LinkedIn Ads screenshot 1Marketing · MCPAds Manager by AdKit: Google Ads, Meta Ads, TikTok Ads, LinkedIn AdsPPC advertising on Google Ads, Meta Ads (Facebook Ads), TikTok Ads, LinkedIn Ads, Reddit Ads & more.No reviewsFreeEquation.ioProductivity · MCPEquation.ioCreate interactive 2D and 3D graphs with validated equations, shareable links, and PNG previews.No reviewsFreePlaceCallDevelopment · MCPPlaceCallReal phone calls to US businesses: book, ask, get quotes. Returns outcome and transcript.No reviewsFreeEmail Inbox API + Sending by SendmuxDevelopment · MCPEmail Inbox API + Sending by SendmuxAI email inbox and sending tools with attachments, search, live events, and webhooks.No reviewsFreeCurrentsDevelopment · MCPCurrentsSelf-healing CI tests and proof of work for AI agentsNo reviewsFreeInbox Zero screenshot 1Development · MCPInbox ZeroSearch Gmail and Outlook, save drafts, manage email rules and view email stats.No reviewsFreeArc UI screenshot 1Productivity · MCPArc UIReact components and blocks with motion. Search docs, props and shadcn install commands.No reviewsFreeCustomermates screenshot 1Marketing · MCPCustomermatesNative MCP access to CRM contacts, organizations, deals and tasks with user permissions.No reviewsFreeatoma screenshot 1Productivity · MCPatomaStart and follow atoma builds; read their runs, traces, agent registry and skill catalogue.No reviewsFreeFireCMS Cloud screenshot 1Data and analytics · MCPFireCMS CloudManage FireCMS Cloud from an AI agent: Firestore data, collections, schemas and users.No reviewsFreeWatermelon UIProductivity · MCPWatermelon UISearch free React, Tailwind, and shadcn components, blocks, and dashboards; get installable source.No reviewsFreeLibreJusticeDevelopment · MCPLibreJusticeSearch French-language and European case law and French legal texts (codes, statutes, treaties).No reviewsFreeMorocco communesDevelopment · MCPMorocco communesMorocco's régions, provinces and communes: HCP codes, names, census population and boundariesNo reviewsFreeGitDiagram screenshot 1Development · MCPGitDiagramArchitecture diagrams, explanations and Mermaid source for public GitHub repositories.No reviewsFreeUICapsuleProductivity · MCPUICapsuleSearch and install interactive React components with unusual motion, via the shadcn CLI.No reviewsFree

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