Serena
MIT MCP toolkit: symbol-level retrieve/edit via free LSP
AI Agents / Code Context · OSS/MIT · 30.4k
Reviewed 2026-09-08 · last push 2026-10-15 · repo checked 2026-10-19
What's Good
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.
The Catch
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.
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