Show HN: Minimal, open source, coding agent makes end to end PRs, <1000 loc

I built a minimal autonomous agent in <1000 lines of vanilla Python—no frameworks, SDKs, or exotic imports.

It uses just LLM sampling to:

- Autonomously write, test, and push code

- Read GitHub issues and add new features, making PRs in response to them end-to-end

- Resolve git and environment issues and backtrack autonomously

- Perform web research tasks (e.g., gathering niche trivia from Reddit)

Some architectural details. It uses:

- ReAct-based iterative reasoning with tool usage (web search, file operations, code execution)

- Short- and long-term memory management for context

- Various engineering tricks to handle surprising edge cases that arise when going from LLM -> agent

The result is a simple self-contained repo showing people the core logic needed to go from "language model" to "autonomous agent" and unpack the hype/jargon around agents.

It's intentionally minimal and educational, but seeing genuine autonomy arise from simple token sampling was a striking "feel the AGI" moment for me! I welcome contributions from others.