Ponytail is a persona file that acts as a decision procedure. It gives an agent a 7-rung ladder for minimal code and a list of what not to be lazy about.

The lazy senior dev framing resolves into a concrete ladder: YAGNI, reuse, stdlib, one line, minimal code. The agent checks each rung before writing code.

It does not cover every coding concern. It only provides the ladder and the list of what not to be lazy about.

Do I need a specific agent to use it?

No. It is a persona file that can be added to any agent configuration that supports reading files.

Ponytail — Lazy Senior Dev Persona

claude-md-exampleFiles & storage

Ponytail is a persona file for an AI agent that turns the idea of a lazy senior developer into a decision procedure. It gives the agent a seven-rung ladder to work through before writing code, from YAGNI to reuse to standard library to one line to minimal code, plus a list of things not to be lazy about. The result is a checkable behavior instead of a vague vibe.

Unavailable. Delivery for this kind is on the roadmap — not serving yet.

Add to setup to save this item as a reference. Ahel cannot run it, and signing in will not install it.

What your AI can do with it

Applies a 7-rung ladder: YAGNI, reuse, stdlib, one line, minimal code
Lists what not to be lazy about
Turns a persona into checkable behavior
Pushes the agent to write minimal code

Getting started

Save this item in Your setup as a reference.
Read the source or reference documentation for its setup requirements. Saving it here does not connect it to your AI.
Check this page for availability before trying to install it through Ahel.

Signals

GitHub stars: 149k
Forks: 8k
Last commit: Sep 2026

Questions

What is Ponytail?: Ponytail is a persona file that acts as a decision procedure. It gives an agent a 7-rung ladder for minimal code and a list of what not to be lazy about.
How does it work?: The lazy senior dev framing resolves into a concrete ladder: YAGNI, reuse, stdlib, one line, minimal code. The agent checks each rung before writing code.
What does it not do?: It does not cover every coding concern. It only provides the ladder and the list of what not to be lazy about.
Do I need a specific agent to use it?: No. It is a persona file that can be added to any agent configuration that supports reading files.

Advanced

Item type: claude-md-example
Key: ponytail-lazy-senior-dev
Source: github.com/dietrichgebert/ponytail

github.com/dietrichgebert/ponytail