Slash Command

Skill Health

Show skill portfolio health dashboard with charts and analytics

Type: Slash Command
Repository: affaan-m/ECC
GitHub stars: 268k
License: MIT
Repo last updated: Sep 24, 2026
Source file: commands/skill-health.md

What Skill Health is

Skill Health is a slash command published in the affaan-m/ECC repository on GitHub, which has about 268k stars. The repository describes itself as: “The agent harness performance optimization system. Skills, instincts, memory, security, and research-first development for Claude Code, Codex, Opencode, Cursor and beyond.”

A slash command is a reusable prompt saved as a markdown file and run by typing its name after a slash. In Claude Code, custom commands have been merged into skills: a file in .claude/commands/ and a skill folder in .claude/skills/ both create the same kind of command, and existing command files keep working.

Skill Health gives you a repeatable way to run the same instructions without retyping them, optionally with arguments.

How to install Skill Health

Claude Code

Download skill-health.md from the repository.
Save it to ~/.claude/commands/ (all projects) or .claude/commands/ (one project). As a skill, you can instead save it as ~/.claude/skills/<name>/SKILL.md.
Run it by typing / followed by its name.

Claude Cowork

Turn the command into a skill: create a folder with the file saved as SKILL.md and zip it.
In Customize → Skills, click +, then upload the ZIP.
Run it from any task with / and the skill name.

New to extending Cowork? Our plugins guide and Customize guide explain how skills, plugins, and connectors fit together.

Inside the source file

An excerpt from commands/skill-health.md, shared under the repository's MIT license. Read the full file on GitHub.

Shows a comprehensive health dashboard for all skills in the portfolio with success rate sparklines, failure pattern clustering, pending amendments, and version history.

Implementation

Run the skill health CLI in dashboard mode:

ECC_ROOT="${CLAUDE_PLUGIN_ROOT:-$(node -e "var r=(function(){var p=require('path'),f=require('fs'),o=require('os');var e=process.env.CLAUDE_PLUGIN_ROOT;if(e&&e.trim())return e.trim();var d=p.join(o.homedir(),'.claude');function L(x){try{return require(p.join(x,'scripts','lib','resolve-ecc-root')).resolveEccRoot()}catch(_){return null}}var r=L(d);if(r)return r;var s=['ecc','ecc@ecc','marketplaces/ecc','everything-claude-code','everything-claude-code@everything-claude-code','marketplaces/everything-claude-code'];for(var i=0;i<s.length;i++){r=L(p.join(d,'plugins',s[i]));if(r)return r}try{var g=['ecc','everything-claude-code'];for(var j=0;j<g.length;j++){var c=p.join(d,'plugins','cache',g[j]);var O=f.readdirSync(c);for(var k=0;k<O.length;k++){var q=p.join(c,O[k]);var V=f.readdirSync(q);for(var m=0;m<V.length;m++){r=L(p.join(q,V[m]));if(r)return r}}}}catch(_){}return d})();console.log(r)")}"
node "$ECC_ROOT/scripts/skills-health.js" --dashboard

For a specific panel only:

ECC_ROOT="${CLAUDE_PLUGIN_ROOT:-$(node -e "var r=(function(){var p=require('path'),f=require('fs'),o=require('os');var e=process.env.CLAUDE_PLUGIN_ROOT;if(e&&e.trim())return e.trim();var d=p.join(o.homedir(),'.claude');function L(x){try{return require(p.join(x,'scripts','lib','resolve-ecc-root')).resolveEccRoot()}catch(_){return null}}var r=L(d);if(r)return r;var s=['ecc','ecc@ecc','marketplaces/ecc','everything-claude-code','everything-claude-code@everything-claude-code','marketplaces/everything-claude-code'];for(var i=0;i<s.length;i++){r=L(p.join(d,'plugins',s[i]));if(r)return r}try{var g=['ecc','everything-claude-code'];for(var j=0;j<g.length;j++){var c=p.join(d,'plugins','cache',g[j]);var O=f.readdirSync(c);for(var k=0;k<O.length;k++){var q=p.join(c,O[k]);var V=f.readdirSync(q);for(var m=0;m<V.length;m++){r=L(p.join(q,V[m]));if(r)return r}}}}catch(_){}return d})();console.log(r)")}"
node "$ECC_ROOT/scripts/skills-health.js" --dashboard --panel failures

For machine-readable output:

ECC_ROOT="${CLAUDE_PLUGIN_ROOT:-$(node -e "var r=(function(){var p=require('path'),f=require('fs'),o=require('os');var e=process.env.CLAUDE_PLUGIN_ROOT;if(e&&e.trim())return e.trim();var d=p.join(o.homedir(),'.claude');function L(x){try{return require(p.join(x,'scripts','lib','resolve-ecc-root')).resolveEccRoot()}catch(_){return null}}var r=L(d);if(r)return r;var s=['ecc','ecc@ecc','marketplaces/ecc','everything-claude-code','everything-claude-code@everything-claude-code','marketplaces/everything-claude-code'];for(var i=0;i<s.length;i++){r=L(p.join(d,'plugins',s[i]));if(r)return r}try{var g=['ecc','everything-claude-code'];for(var j=0;j<g.length;j++){var c=p.join(d,'plugins','cache',g[j]);var O=f.readdirSync(c);for(var k=0;k<O.length;k++){var q=p.join(c,O[k]);var V=f.readdirSync(q);for(var m=0;m<V.length;m++){r=L(p.join(q,V[m]));if(r)return r}}}}catch(_){}return d})();console.log(r)")}"
node "$ECC_ROOT/scripts/skills-health.js" --dashboard --json

Usage

/skill-health                    # Full dashboard view
/skill-health --panel failures   # Only failure clustering panel
/skill-health --json             # Machine-readable JSON output

What to Do

Run the skills-health.js script with --dashboard flag
Display the output to the user
If any skills are declining, highlight them and suggest running /evolve
If there are pending amendments, suggest reviewing them

Panels

Success Rate (30d) — Sparkline charts showing daily success rates per skill
Failure Patterns — Clustered failure reasons with horizontal bar chart
Pending Amendments — Amendment proposals awaiting review
Version History — Timeline of version snapshots per skill

Before you install

Read the whole file first. Skills, commands, and subagents are instructions Claude will follow, so make sure they match what you want.
Check which tools, scripts, or MCP servers it uses. Local servers and scripts run with your permissions.
Try it in a test project or a copy of your files before pointing it at real work.
Pin the version you tested, and review changes before updating.
Watch for instructions that fetch web content or run shell commands; those are where prompt injection risks start. See our prompt injection guide.

FAQ

What is Skill Health?

Skill Health is a slash command for Claude Code and Claude Cowork from the affaan-m/ECC repository on GitHub. Show skill portfolio health dashboard with charts and analytics

How do I install Skill Health in Claude Code?

Download skill-health.md from the repository. Save it to ~/.claude/commands/ (all projects) or .claude/commands/ (one project). As a skill, you can instead save it as ~/.claude/skills/<name>/SKILL.md. Run it by typing / followed by its name.

Can I use Skill Health in Claude Cowork?

Turn the command into a skill: create a folder with the file saved as SKILL.md and zip it. In Customize → Skills, click +, then upload the ZIP. Run it from any task with / and the skill name.

Is Skill Health safe to install?

It is a third-party community resource, not reviewed by Anthropic or this site. Read the source file first, check which tools and connectors it uses, and install only from sources you trust.

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Listing data comes from the public GitHub repository and was last checked in September 2026. Excerpts are © their authors and shared under MIT. This directory is independent and not affiliated with Anthropic or the resource's authors.