A coding guide for choosing the smallest solution that works. It encourages checking whether a task is needed and preferring standard-library or built-in platform features over custom code and extra dependencies.

Use it when deciding whether to build a feature, add a dependency, or replace a long custom implementation with a simpler standard option.

Developers can create unnecessary abstractions, dependencies, and code for simple problems. This helps reduce implementation size and avoid work that does not provide value.

How kortix-ai/suna configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to kortix-ai/suna. 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/kortix-ai/suna/dev/.agents/skills/ponytail/SKILL.md

Clone the repo

git clone --depth 1 https://github.com/kortix-ai/suna

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/kortix-ai/suna/ponytail/github.svg)](https://agentmods.dev/skills/kortix-ai/suna/ponytail)

Your own site

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

Per session 184 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 1,610 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.

Origin unknown 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	$0.00184	$0.01610
Opus 5.5	$0.00074	$0.00644
Sonnet 5.5	$0.00037	$0.00322
Haiku 4.5	$0.00018	$0.00161

Measured 1mo ago against content hash 1316a2f3f957, 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 1mo 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.

.agents/skills/ponytail/SKILL.md · 121 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

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.

1mo ago First seen · 121 lines · 184 tokens per session scan A 1316a2f3f957

Subscribe to this mod's changes

ponytail is a skill published in the GitHub repository kortix-ai/suna (20,356 stars, last pushed 3d ago), with no licence file. It adds 184 tokens to every session and 1,610 once invoked, about $0.0007 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 2026-09-27.

LLM Productivity ai ai-agents company-as-code open-source self-hosted

ponytail next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
ponytailkortix-ai/suna	Skill	20k	3d ago	none	A	184	Claude Code
tmuxTeam-Commonly/commonly	Skill	1.4k	today	Apache-2.0	A	48	Claude Code, Codex
copilotkit-channelsCopilotKit/CopilotKit	Skill	39k	today	MIT	A	112	Claude Code
setup-slack-channelCopilotKit/CopilotKit	Skill	39k	today	MIT	A	206	Claude Code
channels-setupCopilotKit/CopilotKit	Skill	39k	today	MIT	A	141	Claude Code
organizeMarker-Inc-Korea/AutoRAG	Skill	5.3k	yesterday	Apache-2.0	A	70	Claude Code, Codex
commonlyTeam-Commonly/commonly	Skill	1.4k	today	Apache-2.0	A	0	Claude Code, Codex

suna: Skill for Claude Code