All Skills
Coding & EngineeringClaude Plugins (Official)

codspeed — Agent Skill

by CodSpeedHQ · Updated

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.

At a glance

codspeed is an Agent Skill by CodSpeedHQ in the Coding & Engineering category. In Claude Code it installs with `/plugin install codspeed@claude-plugins-official` after adding the anthropics/claude-plugins-official marketplace; other assistants use its SKILL.md instructions as rules. Its source repository has 384 GitHub stars (as of Oct 28, 2026).

Source 384GitHub stars

How to install codspeed in your AI client

Setup for Claude Code, Claude Desktop, Cursor, Codex, Windsurf, Cline and VS Code — copy-paste ready.

How to install codspeed in Claude CodeAnthropic's agentic CLI

  1. Add the marketplace

    claude
    /plugin marketplace add anthropics/claude-plugins-official

  2. Install the skill

    claude
    /plugin install codspeed@claude-plugins-official

  3. Use it

    These are slash commands for a Claude Code session, not your shell. Claude auto-invokes the skill when your request matches its description — or type its slash command if it exposes one.

Documentation

Full README

Optimize code performance and catch regressions early.

Get Started · Documentation

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, CircleCI, and more.
  • 🔌 Plug your existing benchmarks in less than 5 minutes - works with pytest, vitest, criterion, and more.

Installation

bash
curl -fsSL https://codspeed.io/install.sh | bash

[!NOTE] The CodSpeed CLI officially supports Ubuntu 22.04, 24.04, 26.04 and Debian 12. Other Linux distributions may work, but are not officially supported.

Quick Start

First, authenticate to keep your benchmark results linked to your CodSpeed account:

bash
codspeed auth login

The simplest way to get started is to benchmark any executable program directly:

bash
# Benchmark a single command
codspeed exec -- ./my-binary --arg1 value

# Benchmark a script
codspeed exec -- python my_script.py

# Benchmark with specific instrument
codspeed exec --mode walltime -- node app.js

This approach requires no code changes and works with any executable. CodSpeed will measure the performance provide the instrument results.

Deeper integration with harnesses using codspeed run

Excerpt — the full document is on GitHub.

More Coding & Engineering skills

Catalog data refreshed . Something wrong? Report it.