{"data":{"slug":"serena","name":"Serena","tagline":"MIT MCP toolkit: symbol-level retrieve/edit via free LSP","category":"agents","categoryName":"AI Agents","url":"https://github.com/oraios/serena","github":"https://github.com/oraios/serena","pricing":"open-source","hook":"Serena is the IDE-for-your-agent: symbol-level retrieve, edit, and refactor over MCP.","whatsGood":"MIT. Free MCP server + free LSP backend by default — find_symbol / insert_after_symbol style tools, not line-number thrash. Complements coding agents (Claude Code, Codex, OpenCode, Cursor) instead of replacing them. Language-server abstraction across many stacks.","theCatch":"Complements agents; it is not a turnkey SWE loop. JetBrains plugin backend is paid optional (free trial) — LSP path stays free. Symbol quality tracks whatever language server you wire.","verdict":"MIT symbol MCP for agents. Free LSP core; JetBrains plugin is optional paid.","addedAt":"2026-09-08","featured":false,"domain":"AI Agents","subSpecialty":"Code Context","subcategory":"Code Context","tags":["mcp","self-host","permissive","license-unclear","active"],"capabilities":["mcp","lsp","symbols"],"surfaces":["MCP","Self-host"],"ecosystem":["Python","Multi-platform"],"licenseModel":"OSS/MIT","githubStars":30374,"starsPerWeek":369,"access":"free","archived":false,"repo":{"createdAt":"2025-03-23","pushedAt":"2026-10-15","license":"NOASSERTION","archived":false,"checkedAt":"2026-10-19"}},"related":[{"slug":"claude-code","name":"Claude Code","tagline":"Terminal-first coding agent with deep repository context"},{"slug":"cursor","name":"Cursor","tagline":"The AI-first code editor that understands your codebase"},{"slug":"devin","name":"Devin","tagline":"Autonomous AI engineer for defined engineering tasks"},{"slug":"stagehand","name":"Stagehand","tagline":"AI-native browser automation that mixes code and natural language"},{"slug":"browser-use","name":"Browser Use","tagline":"Open-source framework for LLM-driven browser agents"}],"links":{"self":"/api/gems/serena","html":"/gems/serena","markdown":"/gems/serena.md","category":"/api/gems?category=agents","categoryPage":"/stacks/agents"}}