JetBrains released Rider 2026.2 EAP 5, the fifth early access build for its upcoming major release. The update introduces a faster startup flow and a redesigned non-modal interface that reduces screen clutter during launch.
The IDE introduces quality-check hooks for AI agents like Claude Code and Codex, running background tests on code edits before the agent proceeds.
The software development kit targets .NET developers working with C#, F#, Visual Basic, and other Microsoft frameworks. JetBrains positions this preview as part of the continuous improvement cycle leading to the final 2026.2 release.
A key addition involves quality-check hooks for external AI coding agents such as Claude Code and OpenAI Codex. The IDE now runs background tests on code edits before allowing the agent to proceed with further changes.
The update also adds a PostToolUse hook that scans generated code for syntax errors and formatting warnings. These findings pass back to the model, enabling automated self-correction cycles without manual developer intervention.
Compilation failures now block agents from marking tasks as complete within the IDE environment. Minor formatting issues generate guidance prompts instead of halting progress entirely.
The Explain with AI feature received updates that allow it to process build errors directly from the console output. This capability helps developers resolve multi-targeting and MSBuild configuration problems faster.
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