ECC
ECC is a plugin and toolkit that adds planning, testing, review, and memory routines to coding agents like Claude Code for developers building software.
What it is good for
- Making an AI coding agent plan and test changes before building
- Reusing proven coding workflows across projects
- Scanning agent setup files for security problems
- Keeping coding agent context across sessions
At a glance
- Who it is for
- Setup
- Guided command-line setup
Level 4 of 5. You copy and paste commands into a terminal by following the instructions. Comfortable territory for vibe coders.
- Cost
- Free and open source
- Type
- Skill or plugin
- Tasks
- Works with
- Claude Code, Codex, Kimi Code, Cursor, OpenCode, GitHub Copilot
Momentum
- Rank this week
- #87
- Best rank
- #73 week 40, 2026
- Stars gained last week
- +6,174
- GitHub stars
- 295,068
GitHub numbers as of Nov 2, 2026. Updated weekly.
Ranking history
Official links
Setup steps are on the official pages. We do not repeat them here, since they change.
Questions
- Is ECC free?
- Yes. It is free and open source (MIT license).
- Do I need to know how to code to use ECC?
- You do not need to write code, but setup means copying and pasting commands into a terminal by following its instructions.
- What does ECC work with?
- According to its own documentation, it works with Claude Code, Codex, Kimi Code, Cursor, OpenCode, and GitHub Copilot.
- What is ECC good for?
- Making an AI coding agent plan and test changes before building, reusing proven coding workflows across projects, scanning agent setup files for security problems, and keeping coding agent context across sessions.
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