atomic: Skill for Claude Code

.agents/skills/bun/SKILL.md

bun is a skill for Claude Code, Codex from bastani-inc/atomic. It costs 42 tokens per session (2,607 once invoked), scanned A, original, no licence file.

A single tool for running JavaScript and TypeScript programs, installing packages, bundling code, and testing applications.

In plain words
What is it for?
It helps build, test, and deploy JavaScript or TypeScript applications.
Why use it?
It brings common development tasks into one tool instead of requiring separate tools for running, dependency management, building, and tests.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing. Also seen: installed under .agents/ (shared by several agents).

This is bastani-inc/atomic's own configuration. It tells Claude Code and Codex how to work on atomic itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything atomic configures →

Reuse

Borrowing it

Nothing to install: this file belongs to bastani-inc/atomic. 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/bastani-inc/atomic/main/.agents/skills/bun/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/bastani-inc/atomic

Made for: Claude Code, Codex.

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.

agentmods badge for bun

README.md
[![agentmods](https://agentmods.dev/badge/skills/bastani-inc/atomic/bun/github.svg)](https://agentmods.dev/skills/bastani-inc/atomic/bun)
Your own site
<a href="https://agentmods.dev/skills/bastani-inc/atomic/bun"><img src="https://agentmods.dev/badge/skills/bastani-inc/atomic/bun/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.

agentmods 80×15 button for bun

Your own site · 80×15
<a href="https://agentmods.dev/skills/bastani-inc/atomic/bun"><img src="https://agentmods.dev/badge/skills/bastani-inc/atomic/bun.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 42 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,607 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00042 $0.02607
Opus 5.5 $0.00017 $0.01043
Sonnet 5.5 $0.00008 $0.00521
Haiku 4.5 $0.00004 $0.00261

Measured 2mo ago against content hash cde0a81b0248, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

bun scanned grade A with 1 finding 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

fetch(req) {
.agents/skills/bun/SKILL.md · 252 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.

  1. 2mo ago First seen · 252 lines · 42 tokens per session scan A cde0a81b0248

Subscribe to this mod's changes

bun is a skill published in the GitHub repository bastani-inc/atomic (870 stars, last pushed yesterday), with no licence file. It adds 42 tokens to every session and 2,607 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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