#3 of 15 · Top Claude Code skills

affaan-m/ECC

A plugin of 311 skills, 71 agents, hooks and rules that make an agent plan before it builds, test its changes, review its own work and keep what it learns.

Planning and review Plugin GitHub ecc.tools

Stars: 278,825
Contributors: 411
Latest release: v2.2.3, 1 Oct 2026
Licence: MIT

This week, #1 of 15

+692 forks 452 commits 28 people committing 0 releases

This month, #1 of 15

+3,302 forks 1,052 commits 88 people committing 2 releases

What does affaan-m/ECC do?

ECC gives an agent a coordinated engineering system: it plans before it builds, verifies changes with tests, reviews its own work from a fresh context, remembers what matters and turns repeated wins into reusable skills. It ships 71 agents, 311 skills and 97 legacy command shims, with hooks, rules, memory and AgentShield security scanning. It works best with Claude Code, and has native Codex and Qoder plugins and adapters for other harnesses.

Its default branch holds 1,062 SKILL.md files, 310 agent files, 452 command files and a hooks file.

How do you install affaan-m/ECC in Claude Code?

/plugin marketplace add https://github.com/affaan-m/ECC
/plugin install ecc@ecc

How fast is affaan-m/ECC being forked?

Forks over time, by the day each was made

How actively is affaan-m/ECC maintained?

3,228 commits in 52 weeks, and 18 releases in 12 months

Commits per weekRelease

Alternatives in the same category

obra/superpowers
Composable skills that make a coding agent draw out a spec, write a plan, then build it test-first through subagents that review each task.
298,840 stars
mattpocock/skills
Matt Pocock's everyday engineering skills, kept small and composable so you adapt them instead of handing a framework the whole process.
290,282 stars
garrytan/gstack
Garry Tan's skills that make Claude Code act as an engineering team: product and architecture review, code review, QA in a real browser and a security audit, each a command.
136,348 stars
addyosmani/agent-skills
Addy Osmani's engineering skills for each stage of building software, from spec and plan to test, review and ship, behind nine slash commands.
106,387 stars

Numbers are from the GitHub API on 14 October 2026, read once a day; what it does and how to install it are from its README. All 15 Claude Code skills.

affaan-m/ECC

What does affaan-m/ECC do?

How do you install affaan-m/ECC in Claude Code?

How fast is affaan-m/ECC being forked?

How actively is affaan-m/ECC maintained?

Alternatives in the same category

obra/superpowers

mattpocock/skills

garrytan/gstack

addyosmani/agent-skills