Head-to-head comparison of coding agents (Claude Code, Aider, Codex, etc.) on custom tasks with pass rate, cost, time, and consistency metrics
Data sourced from ClawHub. View on ClawSkills
Select your agent
Option 1: Install via CLI (recommended)
Recommended (no pre-install needed)
npx clawhub@latest --dir ~/.claude/skills install eval-harnessOr via clawhub CLI (if already installed)
clawhub --dir ~/.claude/skills install eval-harnessβ οΈ Requires Node.js 18+. No Node? Use Option 2 below to download the ZIP instead. Install Node.js β
Option 2: Manual install (no Node required)
Download the ZIP, extract it, and place the folder at the path below. Restart your agent to activate.
Install path
~/.claude/skills/eval-harness/π‘Extract and place the folder at the path above, then restart your agent.
What eval-harness can do for your AI workflow
Head-to-head comparison directly from your Claude conversation
Native Claude integration via the open Model Context Protocol (MCP)
One-command installation β no complex setup required
Combine with other skills to build powerful multi-step AI workflows
Try these prompts with your AI agent after installing eval-harness
Help me get started with eval-harness
Explains what eval-harness does, walks through the setup, and runs a quick demo based on your current project
Use eval-harness to head-to-head comparison of coding agents (Claude Code, Aider, Codex...
Invokes eval-harness with the right parameters and returns the result directly in the conversation
What can I do with eval-harness in my ai agent workflow?
Lists the top use cases for eval-harness, with example commands for each scenario
Guides & tutorials for AI skills
10 Fresh GitHub Agent Skills Added in June 2026
A hand-checked shortlist of recently updated GitHub agent skills that were not already in our catalog, excluding marketplaces, awesome lists, managers, and generic skill directories.
The 7 AI Skills Every Software Developer Should Have Installed in 2026
After testing dozens of developer-focused AI skills, these are the seven that have proven genuinely useful across different tech stacks and workflows β not just impressive demos, but tools that hold up under daily use.
eval-harness extends your AI assistant with the ability to head-to-head comparison of coding agents (Claude Code, Aider, Codex, etc.) on custom tasks with pass rate, cost, time, and consistency metrics. Rather than leaving your conversation to handle this manually, you can ask your Claude agent directly β and it will take care of the task end-to-end, using eval-harness as its underlying capability.
eval-harness integrates with Claude through the Model Context Protocol (MCP) standard. The skill is version-controlled and shareable β if you work with a team, you can commit the skill to your project repo and everyone gets the same capability without any extra setup.
To install eval-harness, copy the skill folder to `~/.claude/skills/eval-harness/` for use across all your projects, or `.claude/skills/eval-harness/` for a single project. Restart Claude and the skill is immediately active β invoke it with `/eval-harness` or just describe your goal and the AI will pick it up automatically.
eval-harness is a community-contributed AI productivity skill available through DiscoverAISkills. Like all skills on DiscoverAISkills, it is free to install and use. The broader AI skills ecosystem continues to expand as developers contribute new capabilities across categories like developer tools, data analysis, writing, automation, and more.
Place the skill folder at ~/.claude/skills/eval-harness/ for personal use (all projects), or .claude/skills/eval-harness/ for project-specific use. Restart your AI client, then invoke with /eval-harness or let the AI discover it automatically.
eval-harness supports Claude. It integrates seamlessly with these AI platforms to extend their capabilities.
eval-harness is free to install. Check the repository for licensing information.
Head-to-head comparison of coding agents (Claude Code, Aider, Codex, etc.) on custom tasks with pass rate, cost, time, and consistency metrics
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