Best Oss AI Skills & MCP Servers

Cross-agent permission policy specification for AI coding agents

Local MCP server for Google Workspace (Gmail, Drive, Calendar, Sheets, Docs, Contacts, Tasks, Meet, Search Console, +Forms/Chat/Admin) across multiple accounts — OAuth-only, encrypted token storage, deny-by-default writes.

A fast CLI tool to sync AI agent configurations and MCP servers across Claude, Copilot, Cursor, and more using symbolic links.

Local-first MCP server for cross-agent AI memory. One SQLite + FTS5 corpus across Claude Code, Cowork, Cursor, Continue, Zed, Obsidian, and Telegram — passively captured, verbatim, searchable from any MCP-compatible client.

Planu — MCP Server for Spec Driven Development with native Rust acceleration for hot paths. Cross-platform (Linux/macOS/Windows, x64/arm64, glibc/musl).

The control plane for your team's AI tools — share MCP servers, knowledge bases, and usage analytics across your engineering team

Encrypted LAN bridge between two Claude Code projects: ask read-only questions across project boundaries (and across machines) without pulling the other project's source into the caller's context.

Planu — MCP Server for Spec Driven Development with native Rust acceleration for hot paths. Cross-platform (Linux/macOS/Windows, x64/arm64, glibc/musl).

Unified Capability index for AI agents — 80+ ranked cloud services, skills, MCP servers, plugins, parsers, and public-data sources for Claude Code, Cursor, Claude Desktop, OpenClaw. Call find_capability with a query or jtbd tag to get a ranked list across

Lossless, project-scoped memory for AI coding tools. Durable context across sessions with 56 MCP tools, FTS5 search, conductor orchestrator, loop/watch monitoring, snapshot capture, pre-flight overlap checks, Claude/Codex/OpenCode wrappers, Linear sync, a

The MCP toolkit for AI agents. Voice MCP gives your AI a phone line through your own Twilio. Coder MCP gives it a memory across every Claude Code, Codex CLI, and Cursor session. One npm package, two capability modules, local SQLite, no SaaS in the middle.

Cross-agent permission policy specification for AI coding agents

MCP server that automatically summarizes and shares context across parallel Claude Code sessions

Model Context Protocol server for AgentMinds — gives Claude Code, Cursor, Zed, and other MCP-aware AI clients native access to the AgentMinds cross-site collective intelligence pool. Push agent reports, pull personalised recommendations, browse the networ

Give Claude Code a soul — persistent identity, cross-session learning, and evolving cognitive frameworks

Cross-agent permission policy specification for AI coding agents

Agent-first MCP server: AI coding agents find, compare, verify, and stack-build the right open-source tools across 35+ registries (npm, PyPI, Cargo, Maven, Go, RubyGems, NuGet, Hex, Composer, and more). Graph-aware ranking + version-aware compatibility in

MCP server for the PubChem chemical database. Search compounds, fetch properties, safety data, bioactivity, cross-references, and entity summaries. STDIO & Streamable HTTP.

Universal AI API Orchestrator — 1,598 tools across 106 services. UCP (Universal Commerce Protocol), the .0n App Marketplace, AI Course Builder, Lead Magnet Loop, Automation Builder, SaaS Factory, App Builder, Website Builder, and the Agentic Automation Ge

Deterministic installer for the undoc MCP server, skills, and hooks across Claude Code, Cursor, Codex, and Claude Desktop.

CLI with React Ink TUI for managing AI skills, agents, MCPs, and bundles across Claude Code, Codex, Amp, Copilot, and Cursor

Query 29,500+ World Bank development indicators for 200+ countries across 60+ years via MCP. STDIO or Streamable HTTP.

Cross-agent permission policy specification for AI coding agents

Reduce Claude Code token usage by 70-90% with cross-session memory and four-layer optimization: semantic codebase indexing, PostToolUse tool compression, turn summarization, and session consolidation. MCP server powered by Ollama — zero API calls, runs en