codspeed
PluginCodSpeed is the all-in-one performance testing toolkit. Dive into benchmarking results, flamegraphs, and performance comparisons — give Claude granular profiling context to pinpoint bottlenecks and autonomously iterate on performance via the CodSpeed MCP server.
Install
claude plugin install codspeed@claude-plugins-officialWhat is codspeed?
CodSpeed is the all-in-one performance testing toolkit. Dive into benchmarking results, flamegraphs, and performance comparisons — give Claude granular profiling context to pinpoint bottlenecks and autonomously iterate on performance via the CodSpeed MCP server.
What's inside
2 bundled components — installing the plugin installs all of them.
Skills (2)
codspeed-optimize
Autonomously optimize code for performance using CodSpeed benchmarks, flamegraph analysis, and iterative improvement. Use this skill whenever the user wants to make code faster, reduce CPU usage, optimize memory, improve throughput, find performance bottlenecks, or asks to 'optimize', 'speed up', 'm
codspeed-setup-harness
Set up performance benchmarks and CodSpeed harness for a project. Use this skill whenever the user wants to create benchmarks, add performance tests, set up CodSpeed, configure codspeed.yml, integrate a benchmarking framework (criterion, divan, pytest-benchmark, vitest bench, go test -bench, google
What this can do
Capabilities declared by the plugin's own components — read straight from their frontmatter, not inferred.
Ship executables
3 files in bin/ are added to PATH
Inherit all session tools
2 components declare no tool restrictions
~274 tokens of context used while enabled, before you invoke anything
Trust
87/100 · Excellent2 factors scored below maximum
Documentation
README · ~5 min read
Optimize code performance and catch regressions early.
Key features
- 🎯 <1% variance in measurements using CPU simulation - no more flaky benchmarks.
- 🔥 Differential flamegraphs to pinpoint exactly what got slower, commit by commit.
- 💬 PR comments & status checks showing performance impact directly in your workflow.
- 🛡️ Merge protection to block PRs that degrade performance beyond your threshold.
- 🐍 Multi-language support for Python, Rust, Node.js, Go, C/C++ and more.
- 🏠 Run locally or in CI - works on your machine and integrates with GitHub Actions, GitLab CI, and more.
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