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CodeJ

Open-source Coding Agent CLI that reads, modifies, and tests code in your

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Today
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7 days
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30 days
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What is CodeJ?

CodeJ is an open-source CLI tool that acts as a coding agent for developers. Built with Java, it understands your codebase, plans modifications across multiple files, executes development tools like tests and linters, and iterates based on results until delivering verified code changes. It supports OpenAI-compatible models and runs entirely in the terminal.

Designed for developers working on real codebases, CodeJ handles complete workflows: feature implementation, bug fixing, and cross-module refactoring. It reads repository structure and conventions, breaks tasks into executable steps, edits files while maintaining code style, runs builds and tests, and provides clear diffs for review before executing sensitive operations.

Momentum

Daily activity over the last 30 days: upvotes, unique visits, new GitHub stars and Hacker News points.

2026-09-29: 0 upvotes, 0 visits, 0 stars, 0 HN points2026-09-30: 0 upvotes, 0 visits, 0 stars, 0 HN points2026-10-01: 0 upvotes, 0 visits, 0 stars, 0 HN points2026-10-02: 0 upvotes, 0 visits, 0 stars, 0 HN points2026-10-03: 0 upvotes, 0 visits, 0 stars, 0 HN points2026-10-04: 0 upvotes, 0 visits, 0 stars, 0 HN points2026-10-05: 0 upvotes, 0 visits, 0 stars, 0 HN points2026-10-06: 0 upvotes, 0 visits, 0 stars, 0 HN points2026-10-07: 0 upvotes, 0 visits, 0 stars, 0 HN points2026-10-08: 0 upvotes, 0 visits, 0 stars, 0 HN points2026-10-09: 0 upvotes, 0 visits, 0 stars, 0 HN points2026-10-10: 0 upvotes, 0 visits, 0 stars, 0 HN points2026-10-11: 0 upvotes, 0 visits, 0 stars, 0 HN points2026-10-12: 0 upvotes, 0 visits, 0 stars, 0 HN points2026-10-13: 0 upvotes, 0 visits, 0 stars, 0 HN points2026-10-14: 0 upvotes, 0 visits, 0 stars, 0 HN points2026-10-15: 0 upvotes, 0 visits, 0 stars, 0 HN points2026-10-16: 0 upvotes, 0 visits, 0 stars, 0 HN points2026-10-17: 0 upvotes, 0 visits, 0 stars, 0 HN points2026-10-18: 0 upvotes, 0 visits, 0 stars, 0 HN points2026-10-19: 0 upvotes, 0 visits, 0 stars, 0 HN points2026-10-20: 0 upvotes, 0 visits, 0 stars, 0 HN points2026-10-21: 0 upvotes, 0 visits, 0 stars, 0 HN points2026-10-22: 0 upvotes, 0 visits, 0 stars, 0 HN points2026-10-23: 0 upvotes, 0 visits, 0 stars, 0 HN points2026-10-24: 0 upvotes, 0 visits, 0 stars, 0 HN points2026-10-25: 0 upvotes, 0 visits, 0 stars, 0 HN points2026-10-26: 0 upvotes, 0 visits, 0 stars, 0 HN points2026-10-27: 0 upvotes, 0 visits, 0 stars, 0 HN points2026-10-28: 0 upvotes, 0 visits, 0 stars, 0 HN points
30 days agotoday

How do we know it's vibe coded?

vibetrend discovered CodeJ automatically. Evidence: Agent files (claude-code) in liumaishenjian/codej. View source.

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