MCP servers

Each entry shows what its maintainer published and when the project was last touched. Where a repository has been deleted or archived, that is stated on the entry instead of being quietly left out.

Listed, not yet verified by us (60)

Published to the registry, but we have not yet checked its repository. Treat the entry as the maintainer’s claim only.

io.github.oneill9/mcp-server-tfl — v1.4.0
Community-built server providing real-time London transport data via the TfL Unified API
Phrase Flip — v0.10.0
Privacy-first local phrase-flipped translation for AI chat clients.
io.github.oneill9/tfl-mcp-server — v1.5.2
Community-built server providing real-time London transport data via the TfL Unified API
io.github.onelogin/onelogin-mcp — v1.1.1
MCP server for OneLogin API - manage users, apps, roles, and authentication
Service Public France — 38 functions, v1.14.8
French public services: tax, property, admin, education, healthcare, security, risks, legal texts
io.github.oneprofile-dev/curatedmcp-catalog-mcp — v0.1.1
Search the CuratedMCP catalog of risk-classified MCP servers and check verification status.
io.github.oneprofile-dev/mcp-launcher — v2.1.1
Single MCP hub: discover, add, audit, and govern MCP servers across every AI client.
io.github.onepunchtechnology/glassypic — 3 functions, v2.0.2
AI image processing: upscale, resize, crop, compress, convert file format, and generate SEO metadata
io.github.onepunchtechnology/tinify-ai — 3 functions, v1.4.3
MCP server for Tinify image optimization — one tool, max optimization
io.github.onetrueclaude-creator/hebbian-vault — v0.2.0
Usage-adaptive Obsidian vault search: Hebbian + PageRank + BM25 hybrid ranking.
io.github.onetrueclaude-creator/mcp-contradiction-check — v0.1.0
Find where your notes disagree — contradiction detection for markdown vaults.
io.github.onetrueclaude-creator/mcp-curiosity-engine — v0.1.0
Surface the notes you forgot you wrote — DMN replay for markdown vaults.
io.github.onetrueclaude-creator/mcp-knowledge-gaps — v0.1.0
Find what your knowledge base mentions but doesn't actually explain.
io.github.onetrueclaude-creator/vault-health-mcp — v0.2.0
Obsidian vault structural health: broken links, orphans, missing frontmatter, safe auto-repair.
Fixie MCP Server — 7 functions, v1.1.0
Parse FIX messages and help agents create Fixie initiators.
OGA Antibody Validation — needs an account, v1.0.0
Knockout-controlled antibody validation lookups over the Only Good Antibodies dataset
io.github.ONLYOFFICE/docspace — needs an account, v3.2.0
A room-based collaborative platform
mneme Record — v3.6.3
Vault-native, accountable memory for Claude Code and MCP clients. Markdown is ground truth.
Onplana — needs an account, v0.2.4
Project portfolio management for PMOs. Alternative to Microsoft Project Online. OAuth + PAT.
io.github.OnticX/open-mcp-registry — v0.1.0
Search and discover MCP servers from the MCP Registry.
io.github.OnticX/search-mcp-registry — v0.1.4
Search and discover MCP servers from the MCP Registry.
Ratary Memory MCP — v1.1.1
Persistent coding memory for AI assistants. MCP stdio, hybrid search, graph, context.
io.github.Ooak21/cortex402 — v0.2.0
Pay-per-call x402 data products on Base mainnet — sanctions, aviation weather, US property.
io.github.oogdevs/clawtube-mcp — v0.1.0
Minimal MCP server for ClawTube — a small, auditable control plane for skills and agents.
Stats Compass — v0.3.0
50+ pandas-powered tools for data loading, cleaning, visualization, and ML workflows
io.github.oomkapwn/enquire-mcp — v3.11.6
Long-term memory for AI agents — your Obsidian vault as searchable persistent memory.
io.github.ooopak11/opuslog — needs an account, v1.0.0
Repertoire & program archive for classical vocalists. Match works from posters, save, search.
io.github.ooples/mcp-console-automation — v1.0.2
MCP server for AI-driven console application automation and monitoring
io.github.ooples/token-optimizer-mcp — v5.1.1
Context-window optimization: caching, compression & smart file tools that cut tokens 60-90%.
io.github.Oortonaut/mcacp — v0.1.3
MCP-to-ACP bridge — let any MCP client drive ACP coding agents
io.github.Oortonaut/task-graph-mcp — v0.3.0
MCP server for agent task workflows with phases, prompts, gates, and multi-agent coordination
io.github.oozoofrog/baepsae — v6.3.0
Local MCP server for iOS Simulator and macOS app automation with a native Swift bridge
iconlab — 3 functions, v0.2.1
Search 324k icons or generate new ones in the Lucide grammar - grammar-locked lint+critique+repair
Apuchat — 18 functions, v1.0.0
Real-time chat for AI agents. Claude Code, Cursor, Cline and Codex join channels over MCP.
io.github.opcastil11/mcp-prowl — v0.1.1
Discover, evaluate, and compare SaaS APIs. Agent-verified scores and metrics.
RogerRat — 18 functions, v1.3.4
Real-time chat hub for AI agents — Claude Code, Cursor, Cline, Codex over MCP or REST.
RogerThat — 18 functions, v1.25.0
Real-time chat hub for AI agents — Claude Code, Cursor, Cline, Codex over MCP or REST.
Open Agreements — 4 functions, v0.8.0
Fill standard legal agreement templates (NDAs, SAFEs, NVCA docs, employment) as DOCX files.
Alembica MCP — v0.3.4
MCP server for Alembica validation, extraction, cost estimation, and schema queries.
prismAId MCP — v0.16.0
MCP server for prismAId AI-assisted systematic reviews and protocol conformance checking.
io.github.open-crater/opencrater-mcp — 3 functions, v0.1.1
Monetize your MCP server or CLI: live OpenCrater network stats + how maintainers earn USDC.
OpenMetadata — endpoint not answering, v1.1.0
Official OpenMetadata MCP: governed context and business semantics for AI assistants and agents.
OpenAccountants — 14 functions, v1.0.0
Open-source AI accounting skills verified by licensed accountants (tax, VAT, payroll).
io.github.openaccountants/openaccountants-mcp — v0.1.1
Open-source tax skills for AI across 134 countries.
OpenAdapt Agent (openadapt-flow bridge) — v2.0.1
Local Beta bridge for governed openadapt-flow workflows and attended actions.
io.github.openagentemail/mcp — v0.4.0
Unlimited agent mailboxes — create identities, read/wait for mail, extract OTPs, send email.
io.github.OpenCageData/opencage-geocoding-mcp — v1.0.3
MCP server for OpenCage geocoding API
io.github.opencontext-team/mcp-server — v1.0.2
An MCP server that provides visual memory and context storage with knowledge graph capabilities
나라장터 입찰공고 — v0.6.0
나라장터 입찰공고정보서비스(공공데이터포털 data.go.kr) Open API를 감싼 로컬 MCP 서버
나라장터 사용자정보 — v0.2.0
나라장터 사용자정보서비스(공공데이터포털 data.go.kr) Open API를 감싼 로컬 MCP 서버
나라장터 낙찰정보 — v0.4.0
나라장터 낙찰정보서비스 Open API를 위한 로컬 MCP 서버
나라장터 사전규격 — v0.3.0
나라장터 사전규격정보서비스 Open API를 위한 로컬 MCP 서버
MinerU Open MCP — v1.0.20
Parse PDFs, images, doc, docx, ppt, pptx, xls, xlsx, html into Markdown using MinerU API.
io.github.openenterprise-info/oe-mcp — v1.4.4
Connect Claude Code, Cursor & Windsurf to 2,600+ enterprise data sources with one binary.
OpenFate Bazi MCP — v0.2.6
OpenFate Bazi MCP with True Solar Time, Four Pillars, Da Yun, and branch interactions.
OpenFateAI Assistant MCP — v0.1.0
Local MCP tools for decisions, reflection, action plans, and digital report outlines.
io.github.Openfinanceorg/openfinance — v0.1.8
Connect your financial accounts to view balances, search transactions, and get spending insights.
io.github.openfused/openfuse-mcp — v0.4.2
Encrypted mail, shared memory, and persistent context for AI agents.
io.github.opengameapp/browser-game — v0.1.3
Local tools for planning and validating focused browser-game prototypes.
io.github.opengolfapi/mcp-server — v3.5.1
Golf for AI agents — every US course free, plus open contribution, identity & tournaments.

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How this page is ordered

Entries are grouped by whether anyone is still working on them, using the date of the most recent push to the repository. They are not ordered by stars, because a star is a bookmark somebody left once and never took back.

Where we have not checked an entry yet, it says so rather than being mixed in with the verified ones.