ECC (Everything Claude Code): Agents, Skills and Hooks Plugin

ECC (the repo formerly named everything-claude-code; GitHub now redirects that path to affaan-m/ECC) is a very large, MIT-licensed Claude Code plugin. It installs a full engineering workflow in one go: 71 agents, 311 skills, 97 legacy command shims, hooks, memory and the AgentShield scanner for your agent config.

Checked 24 Oct 2026 against the repo README and marketplace.json (version 2.2.3).

Who it is for

Developers who want a complete, opinionated harness setup in one install and are willing to prune it, rather than assembling plugins one by one.

Install

Inside Claude Code, from the README:

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

Pick one install path per harness. Add rule packs separately, since plugins cannot ship rules.

What it does

The README suggests starting from the task, not the catalog:

• Building a feature: /ecc:plan "describe the feature", then the tdd-workflow skill.
• Reviewing new code: /code-review for a fresh-context review.
• Repairing a build: /build-fix.
• Checking context pressure: /context-budget.
• Ending and resuming sessions: /save-session and /resume-session.
• Auditing agent config: /security-scan or agentshield scan --path ..

A low-context path without runtime hooks is available through npx ecc-universal@2.2.3 install --profile minimal --target claude.

Pros

• One install covers planning, TDD, review, memory and config security.
• Actively maintained and very widely adopted.
• Also works with Codex, Qoder and other harnesses.

Cons and caveats

• Huge surface area: many agents and skills add context overhead and overlap with plugins you may already use.
• Install paths are easy to mix up, and stacking them causes duplicates.
• The README warns to install only from official sources, as unofficial mirrors may contain malware.

Links

• Repo: affaan-m/ECC
• npm: ecc-universal
• Related: wshobson/agents, VoltAgent subagents, Compound Engineering