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Release / 7 Apr 2026 / with v9.6.4, v9.6.5

MCP for Unity v9.6.6

Inspect Unity performance and capture memory snapshots through MCP.

All of MCP for Unity

What changed in v9.6.6

Profiling and physics tools join the catalog; arbitrary C# execution and prefab-stage controls are added.

v9.6.6; Unity 2021.3 LTS+, Python 3.10+, uv and an MCP client.

New things you can do

Control profiling sessions, read counters and capture memory snapshots.

Added

Read the evidence

CoplayDev/unity-mcp/blob/v9.6.4/Server/src/services/tools/manage_profiler.py

Configure physics, joints and collision settings and perform physics queries.

Added

Read the evidence

CoplayDev/unity-mcp/blob/v9.6.4/Server/src/services/tools/manage_physics.py

Run C# code inside the Unity Editor.

Added

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CoplayDev/unity-mcp/releases/tag/v9.6.5

Fixed and improved

Open and save prefab stages through `manage_editor` actions `open_prefab_stage` and `save_prefab_stage`.

ImprovedCreate and modify Unity prefab assets.

Read the evidence

CoplayDev/unity-mcp/releases/tag/v9.6.4

Change texture import settings with `set_import_settings`.

ImprovedGenerate procedural textures and sprites in Unity.

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CoplayDev/unity-mcp/releases/tag/v9.6.4

Set a GameObject's static flag with the `is_static` parameter.

ImprovedCreate, load and save Unity scenes and modify GameObjects.

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CoplayDev/unity-mcp/releases/tag/v9.6.5

Unity 2021.3 compatibility fixes address compilation errors and a Mono crash.

Now worksConnect MCP clients to a running Unity Editor.

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CoplayDev/unity-mcp/releases/tag/v9.6.6

Script validation no longer rejects valid constructor invocations.

Now worksCreate and edit C# scripts with structured edits and validation.

Read the evidence

CoplayDev/unity-mcp/releases/tag/v9.6.6

Seeded by @iluxav with Codex, from the release's public sources. Each change links to its evidence.