Codspeed Setup Harness

Sets up performance benchmarks and CodSpeed integration across Rust, Python, Node.js, Go, and C/C++. It detects your project structure, picks the right benchmarking framework (divan, pytest-benchmark, vitest, go test, Google Benchmark), wires up the CodSpeed harness with proper dependencies, and creates initial benchmark files. The skill handles both deep integrations that give you per-function flamegraphs and the exec harness for black-box program benchmarking. Useful when you're adding performance tests for the first time or need benchmarks before running optimization passes. It knows the difference between simulation mode for deterministic CPU measurement and walltime for I/O-heavy workloads, which matters more than you'd think.

Install to Claude Code

npx -y skills add codspeedhq/codspeed --skill codspeed-setup-harness --agent claude-code