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.
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
- 162k
- Category
- AI agents and LLM tools
- Language
- JavaScript
- License
- MIT
- Forked
- 2026-09-26
- Sync status
- In syncLast synced 2026-10-16
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