Serena v2.0.0

2026-10-13

The Serena REPL. The new REPL interface lets agents access Serena's functionality through Python code: combine operations in one call, filter and process results, and reuse variables across calls. This reduces round-trips and saves context by keeping intermediate results out of the conversation. API details are retrieved on demand, and available operations can adapt during a session, including when switching language backends. The classic tool interface remains available.
See further details and configuration instructions.

Other Improvements.

• Expanded language server and coding agent support.
• Improved code intelligence, editing reliability and security.
• Performance improvements and numerous fixes across language servers, project management, hooks and the dashboard.

See our change log for the full list of changes.

Licensing Change. The Serena application is now licensed under GPL-3.0-or-later. See our discussion of the licensing change for the rationale and details.

Update Now. If you are using the uv tool installation of Serena, upgrade as follows:
uv tool upgrade serena-agent