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Projects/Serena/v1.2.0
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Serena v1.2.0

Debug a running program through the JetBrains IDE from a coding agent.

All of Serena

Before you upgrade to v1.2.0

2 to fix

Choose browser, native app with tray, or multi-instance tray manager through `web_dashboard_interface`.

Behavior changedInspect session logs and tool usage through a local web dashboard.Affects: Dashboard users; available interfaces depend on the OS.
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MCP connection provides a short bootstrap; the full manual is loaded on demand with `initial_instructions`.

Behavior changedConnect an LLM client to project navigation, editing and optional shell tools through MCP.Affects: MCP clients.
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Adjust consumers of `search_for_pattern` results to use zero-based line numbers instead of one-based numbers.

Action requiredSearch project files with regular expressions and read or replace file content.Affects: Scripts or clients interpreting pattern-search line numbers.
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Rename memories containing `..`; these names are now rejected to prevent access outside memory directories.

Action requiredSave project knowledge in memory files and read it in later conversations.Affects: Users with memory names containing `..`.
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`insert_after_symbol` now rejects assignments and similar symbols whose ranges cannot be determined reliably.

Behavior changedReplace a symbol definition or insert code before or after it.Affects: Clients inserting after assignments.
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`query_project` accepts a project root, and `list_queryable_projects` returns names and roots.

Behavior changedQuery code in other projects without changing the active project.Affects: Users querying other projects.
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What changed in v1.2.0

The JetBrains `debug` tool controls breakpoints, variables, expression evaluation and execution. Pattern-search line numbers and memory-name validation change.

Also: Use per-session HTTP prompts, choose a dashboard interface, and navigate JSON.

Serena v1.2.0; install serena-agent with uv. Language-specific dependencies and backend requirements still apply.

New things you can do

Fixed and improved

HTTP sessions now each receive their own project information; dynamically activated modes are included in activation messages.

Now worksConnect an LLM client to project navigation, editing and optional shell tools through MCP.
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Elixir Expert starts compiling instead of deadlocking at startup.

Now worksFind named symbols, file outlines and references across a codebase.
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Seeded by @iluxav with Codex, from the release's public sources. Each change links to its evidence.