A coding discipline based on doing the smallest necessary change: first check whether the work is needed, reusable code already exists, or a standard library or installed dependency solves it.

Writing, modifying, refactoring, and reviewing code with a focus on reuse, simple solutions, minimal diffs, and root-cause bug fixes.

It limits unnecessary code, abstractions, and dependencies while encouraging fixes at the shared source of a problem instead of patching individual symptoms.

How OpenStrap/edge configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to OpenStrap/edge. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/OpenStrap/edge/main/.claude/skills/ponytail/SKILL.md

Clone the repo

git clone --depth 1 https://github.com/OpenStrap/edge

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/skills/openstrap/edge/ponytail/github.svg)](https://agentmods.dev/skills/openstrap/edge/ponytail)

Your own site

<a href="https://agentmods.dev/skills/openstrap/edge/ponytail"><img src="https://agentmods.dev/badge/skills/openstrap/edge/ponytail/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/skills/openstrap/edge/ponytail"><img src="https://agentmods.dev/badge/skills/openstrap/edge/ponytail.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 87 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 943 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits

NVIDIA SkillSpector pass 7 Sept 2026

How audits are shown

Origin original No closer match found in the catalogue.

Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

Model	Per session	Once invoked
Fable 5.1	$0.00087	$0.00943
Opus 5.5	$0.00035	$0.00377
Sonnet 5.5	$0.00017	$0.00189
Haiku 4.5	$0.00009	$0.00094

Measured 2mo ago against content hash 58a91d04b98a, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

ponytail scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.claude/skills/ponytail/SKILL.md · 45 lines

The source is not reproduced here

Licensed AGPL-3.0

The repository is licensed AGPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

Read it on GitHub

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

2mo ago First seen · 45 lines · 87 tokens per session scan A 58a91d04b98a

Subscribe to this mod's changes

ponytail is a skill published in the GitHub repository OpenStrap/edge (875 stars, last pushed 3d ago), licensed AGPL-3.0. It adds 87 tokens to every session and 943 once invoked, about $0.0003 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

ble dart flutter quantified-self reverse-engineering right-to-repair

ponytail next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
ponytailOpenStrap/edge	Skill	875	3d ago	AGPL-3.0	A	87	Claude Code
at_client_skills-sdkatsign-foundation/at_client_sdk	Skill	1.4k	yesterday	BSD-3-Clause	A	220	Claude Code
flutter-pre-cachingevanca/flutter-ai-rules	Skill	669	yesterday	MIT	A	36	Claude Code
firebase-authevanca/flutter-ai-rules	Skill	669	yesterday	MIT	A	29	Claude Code
firebase-messagingevanca/flutter-ai-rules	Skill	669	yesterday	MIT	A	35	Claude Code
code-reviewevanca/flutter-ai-rules	Skill	669	yesterday	MIT	A	27	Claude Code
architecture-feature-firstevanca/flutter-ai-rules	Skill	669	yesterday	MIT	A	31	Claude Code

edge: Skill for Claude Code