# ecc

> Skills, memory and security for agents — Adds skills, memory and security rules to a coding agent harness.

- Page: https://tesign.com/en/item/ecc/
- JSON: https://tesign.com/en/item/ecc/index.json
- Korean Markdown: https://tesign.com/item/ecc/index.md
- Generated: 2026-09-17 01:56 UTC

## Numbers

- 259,284 stars — checked on GitHub 2026-09-15 19:33 UTC (+152 observed since the check)
- 7-day +832 observed via GH Archive (as of 2026-09-16 21:00 UTC)
- 24h +124 ★ · 30d +2,660 ★ (as of 2026-09-16 21:00 UTC)
- Star total = the value last checked on GitHub (stars_checked_at) + increases observed via GH Archive since. The 24h · 7d · 30d gains are GH Archive hourly events summed to the reference time (as_of). No score of ours.

## AT A GLANCE

- LICENSE: MIT (permissive) — https://spdx.org/licenses/MIT.html
- USAGE: Use, change and redistribute, commercially too. Keep the notice.
- OPEN SOURCE: YES
- LANGUAGE: JavaScript
- PLATFORM: windows · macos · linux · cli
- CATEGORY: AI · DEV TOOLS
- Tags: agents · harness · mcp
- How to start: For developers
- SOURCES: GitHub https://github.com/affaan-m/ecc
- USE PACKAGE: https://ecc.tools/

## ACTIVITY

- Last commit: 2026-09-15 19:33 UTC
- Latest release: v2.2.1 (2026-09-08)
- Contributors: 359
- Open issues (incl. PRs): 211
- Made by: an individual
- Checked on GitHub: 2026-09-15 19:33 UTC

## Signals and evidence

- RISING · +124 ★ / 24h

## TESIGN TAKE

A large bundle of skills, memory and security rules, so pick a profile rather than switching everything on.

## WHY IT MATTERS

Agent configuration tends to accumulate as a few skills here and a few rules there. ecc gathers skills, instincts, memory, security and research-first development into one harness setup and applies it the same way across Claude Code, Codex, Opencode and Cursor. It is written in JavaScript, published under MIT, and has a separate documentation site.

## BUILD FROM THIS

- One shared baseline agent configuration for the team
- A personal rule set that moves intact when you change tools

## WHO IT'S FOR

- Team lead — gives the whole team one baseline agent setup
- Developer — wants the same rules across Claude Code and Codex

## START IN 5 MINUTES

```
# Needs Node.js 18+, Git and Claude Code 2.1+
$ npx ecc-universal@2.2.1 setup
# Or, in the Claude Code prompt:
# /plugin marketplace add https://github.com/affaan-m/ECC
# /plugin install ecc@ecc
# Do not stack two install methods in one harness
```

## CAVEATS

- Stacking two install methods in one harness duplicates skills and hooks
- Native Windows is supported with open defects in some optional features
- Hooks inject context each session (8,000 chars by default), raising token use

## RECEIPT

- FIRST SEEN BY TESIGN: 2026-09-13 07:43 UTC
- AT SOURCE: 2026-01-18 00:51 UTC
- KEPT: 2026-09-13 11:32 UTC
- Published on TESIGN: 2026-09-13 11:32 UTC
- Text last updated: 2026-09-15 07:17 UTC

## How to read this

- This file was produced by the same build, from the same data, as the tesign.com item page. The text is editorial; the numbers are stored observations.
- null in the JSON means not observed — never zero. The Markdown writes [unconfirmed] for it.
- Star total = the value last checked on GitHub (stars_checked_at) + increases observed via GH Archive since. The 24h · 7d · 30d gains are GH Archive hourly events summed to the reference time (as_of). No score of ours.
- A summary, not legal advice.

[Image] https://tesign.com/img/ecc-9ff6213e45.png