dcc-mcp-tracy

Tracy frame-profiler capture and offline zone analysis for DCC-MCP.

Tracy is a client/server profiler: the target must be built with Tracy instrumentation (C/C++, Rust, C#, Python, or another supported binding). This adapter controls the official tracy-capture and tracy-csvexport utilities; it does not inject Tracy into an uninstrumented process.

Install

pip install dcc-mcp-tracy

Install Tracy separately and set DCC_MCP_TRACY_CAPTURE and DCC_MCP_TRACY_CSVEXPORT, or put the utilities on PATH. On Windows, if neither is available, the adapter downloads and caches the official latest Tracy release automatically. Set DCC_MCP_TRACY_AUTO_DOWNLOAD=0 to require a local installation; use DCC_MCP_RUNTIME_CACHE to choose the cache root. Linux/macOS currently require explicit Tracy binaries because the official release does not ship those desktop bundles.

Workflow

Build/run the instrumented game, engine, Unity native plugin, Unreal module, or gateway process.
Call tracy_capture__capture_trace with the client address and .tracy output path.
Call tracy_analysis__export_csv, then tracy_analysis__summarize_csv to identify high-variance zones.

The adapter invokes subprocesses with shell=False, validates trace/output extensions, and never accepts a shell command.

Development

uv sync --extra dev
uv run pytest
uv run ruff check src tests

Tracy is maintained independently at https://github.com/wolfpld/tracy.

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