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he-yufeng / CoreCoder

Minimal AI coding agent (~1,000 lines of Python) inspired by Claude Code. Works with any LLM. Think NanoGPT for coding agents. Formerly NanoCoder.

Why this job: says: coding agent, ai coding; topics: coding-agent, claude-code, coding agents

Plan mode in action: the agent reads fib.py, gets its edit refused while plan mode is on, presents a plan, and only after approval edits, tests, and reports — with Pre/PostToolUse hooks firing around every call.

What it does

The nanoGPT column is there as a reference point: minimal, readable, but it teaches you to train a GPT. CoreCoder is after the same thing, only the subject is an agent that actually edits code. Sitting it next to Claude Code and aider isn't about competing for their users. CoreCoder is the foundation you stand on while you learn from them and get going; it isn't in the same race.

Get started

No single install command. Read the steps in the README (opens in new tab)

Maintenance
Active
Last commit today
Stars
1,899
+14 this week
Licence
MIT
Allows business use
Downloads for
None listed
No release files
Latest version
v0.9.0
Released today
Built with
Python
100% of the code

Is it looked after?

Contributors
3
Last 90 days
Issues
87% closed
2 still open
Pull requests
10 merged
2 waiting
Releases
11
11 in the last year
  • No contributing guide
  • No security policy
  • No code of conduct
More: languages, topics and project record

Languages

  • Python 100%

Topics

  • ai-agent
  • claude-code
  • cli
  • coding-agent
  • deepseek
  • developer-tools
  • llm
  • openai
  • python
  • corecoder

Project record

  • JobCoding agents
  • StatusListed
  • Commits134
  • Forks462
  • Watching18
  • Stars in 28 days+86
  • CreatedApr 1, 2026
  • First seen by usNov 7, 2026
  • CheckedNov 9, 2026

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