The most important tools around AI coding agents: MCP servers, plugins, editor and knowledge integrations — vetted, with sources.
Knowledge graph★ 83.100+
Graphify
Turns your code folder into a searchable knowledge graph — via local Tree-sitter parsing (~40 languages), with no LLM calls and no vector embeddings.
Integrates directly into Claude Code (a CLAUDE.md directive plus a hook that consults the graph before every file search), ships its own MCP server, and also supports Codex, Cursor, Copilot & co. Can also export the graph as an Obsidian vault. Users report up to 70x fewer tokens on large codebases (community claim).
GitHub: safishamsi/graphify ↗
MCP✓ Official★ 88.372
Official MCP Server Catalog
The official reference repo for Model Context Protocol servers — the starting point for almost every MCP setup.
Anyone who wants to give their agent new capabilities (databases, APIs, file systems …) will find the reference implementations here. The protocol is now being developed further under the Linux Foundation.
GitHub: modelcontextprotocol/servers ↗
Orchestration★ 64.160
claude-flow (ruflo)
Multi-agent orchestration for Claude Code, Codex & co: swarms, adaptive memory, RAG integration.
One of the most widely used frameworks once a single agent isn't enough — for autonomous multi-agent workflows. The npm package is still called claude-flow, while the GitHub repo was renamed to ruflo.
GitHub: ruvnet/ruflo ↗
MCP★ 58.979
Context7
MCP server that loads current, version-accurate library documentation directly into your agent's context.
The antidote to stale training knowledge: instead of hallucinating API calls, the agent reads the actual docs for your library version. Considered a must-have MCP server in many 2026 rankings.
GitHub: upstash/context7 ↗
MCP✓ Official★ 34.987
Playwright MCP
Microsoft's official MCP server for browser automation — via the accessibility tree, without screenshots or a vision model.
The standard choice when your agent needs to operate websites or end-to-end test your own frontend.
GitHub: microsoft/playwright-mcp ↗
MCP✓ Official★ 31.389
GitHub MCP Server
MCP server maintained by GitHub itself for repos, pull requests, issues, code search, and CI/CD insights — remote or local, with OAuth login.
Official vendor support for the full GitHub API — near the top of virtually every "best MCP servers" ranking in 2026.
GitHub: github/github-mcp-server ↗
Editor✓ Official
Claude Code for VS Code
Anthropic's official IDE extension: a sidebar panel with inline diffs — Claude Code visually inside VS Code instead of just in the terminal.
The official option for anyone who prefers working in the IDE over the terminal; per the vendor, over 2 million installs.
VS Code Marketplace: Claude Code ↗
Browser✓ Official
Claude in Chrome
Anthropic's official browser extension: Claude reads, clicks, and navigates web pages alongside you — available to all paid plans since December 2025.
Closes the build-test-verify loop: Claude Code builds, the Chrome extension checks the result live in the browser.
Anthropic: Claude for Chrome ↗
Obsidian★ 2.635
Obsidian Local REST API
Community plugin that starts a local HTTPS server inside Obsidian — since 2026 with a built-in MCP endpoint: read/write notes, search the vault.
The de facto standard way to connect Claude Code or Claude Desktop to your Obsidian vault — a separate MCP server is no longer needed. (Not an official Obsidian product.)
GitHub: coddingtonbear/obsidian-local-rest-api ↗
Obsidian★ 7.398
Copilot for Obsidian
Chat assistant right inside the vault: ask questions about your own notes, draft text — with selectable models, including Claude Opus 4.7.
The most popular AI plugin for Obsidian. The frontend is open source; the Plus features are paid (Brevilabs, not affiliated with Obsidian or Anthropic).
GitHub: logancyang/obsidian-copilot ↗
Obsidian★ 5.269
Smart Connections
Semantic search across your own notes via a local embedding model — no API key needed — plus AI chat over the vault.
Surfaces notes that are related in content but missed by plain linking; runs entirely locally and is often used alongside Claude Code setups.
GitHub: brianpetro/obsidian-smart-connections ↗
Obsidian
Graph Context for Claude Code
Young Obsidian plugin that plugs the vault into Claude Code's /ide selection: selecting text automatically sends along graph context (resolved links, backlinks, heading path).
Uses the same mechanism as the official IDE extensions — interesting for anyone using notes as a knowledge base for coding. Still very new (June 2026).
GitHub: senna-lang/graph-context-for-claude-code ↗