ponytail
A plugin and rule set that pushes AI coding agents to write less code and avoid unneeded work. It aims to cut code size, cost and time in coding sessions.
Pick a small issue you can reproduce, then fix it with your AI coding agent.
Share on XLicense: MIT
Overview
Ponytail is a plugin and rule set for AI coding agents such as Claude Code and Cursor. It pushes the agent to behave like a very restrained senior developer: prefer the smallest change, skip unneeded libraries and abstractions, and keep safety guards. The README shows an example where a date picker request ends in a short snippet instead of a new package, wrapper and stylesheet. It reports benchmark results on real Claude Code sessions, which come from the author.
Key features
- Installs as a Claude Code plugin or Cursor rules
- Steers agents toward the least code that solves the task
- Keeps safety guards while shortening output
- Includes before and after examples
- Benchmark write-up with a way to reproduce it
Best for
Developers whose AI agent tends to over-build with extra dependencies and layers. The reduction figures are the author's own measurements, and gains vary by task.
- Upstream
- DietrichGebert/ponytail
- Fork on GitHub
- Guo-astro/ponytail
- Upstream stars
- 170k
- Category
- AI agents and LLM tools
- Language
- JavaScript
- License
- MIT
- Forked
- 2026-09-26
- Sync status
- In syncLast synced 2026-10-23
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