ECC
A large collection of harness skills: memory, instincts, security, research.
Use it for
Picking individual practices out of a large library
Skip it if
Installing wholesale; conflicting instructions degrade output
What it is
A bundle rather than a single practice: skills for memory, workflow instincts, security checks, and research discipline, installable per skill. The size is the risk — installing the whole thing floods the context and the model starts averaging between conflicting instructions. Pick two or three.
Install
Clone the repository, then copy the skill folder into your agent's skills directory — ~/.claude/skills/ for Claude Code. Skills are plain files: no build step, no daemon.
git clone https://github.com/affaan-m/ECC.gitHow to judge it
Read the SKILL.md before you install. A good skill states when it applies, what it must not do, and how to verify the result. A skill that only lists adjectives will change the agent's tone without improving its output — skip those.
Other Coding & Dev skills
- Agent Skills by Addy Osmani — Engineering skills aimed at production code: review, testing, refactoring, and release hygiene.
- Archify — Turns a plan, a spec, or a codebase into an interactive architecture diagram.
- Ponytail — Makes the agent argue for less code before it writes more.