bun-guides-util

bun-guides-util is a skill for Claude Code, Codex from LuigiColantuono/bun-docs-toolkit. It costs 28 tokens per session (3,823 once invoked), scanned C, original, no licence file.

A set of Bun guides for common utility tasks such as hashing, converting data to Base64, measuring time in nanoseconds, creating UUIDs, and working with byte arrays. Bun is a JavaScript runtime used to run and build applications.

In plain words
What is it for?
Use it when writing or reviewing Bun code that hashes data, encodes binary data, creates identifiers, measures very short durations, or handles byte arrays.
Why use it?
It helps you use these utilities correctly in Bun without having to look up each one separately.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing.

Good fit Use it when writing or reviewing Bun code that hashes data, encodes binary data, creates identifiers, measures very short durations, or handles byte arrays.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/luigicolantuono/bun-docs-toolkit/guides-util
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add LuigiColantuono/bun-docs-toolkit --skill guides-util
Clone the repo
git clone --depth 1 https://github.com/LuigiColantuono/bun-docs-toolkit

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-guides-util

README.md
[![agentmods](https://agentmods.dev/badge/skills/luigicolantuono/bun-docs-toolkit/guides-util/github.svg)](https://agentmods.dev/skills/luigicolantuono/bun-docs-toolkit/guides-util)
Your own site
<a href="https://agentmods.dev/skills/luigicolantuono/bun-docs-toolkit/guides-util"><img src="https://agentmods.dev/badge/skills/luigicolantuono/bun-docs-toolkit/guides-util/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-guides-util

Your own site · 80×15
<a href="https://agentmods.dev/skills/luigicolantuono/bun-docs-toolkit/guides-util"><img src="https://agentmods.dev/badge/skills/luigicolantuono/bun-docs-toolkit/guides-util.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 28 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,823 The whole file, excluding the scripts and references it only reads on demand.
Security scan C 2 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00028 $0.03823
Opus 5 $0.00014 $0.01912
Sonnet 5 $0.00006 $0.00765
Haiku 4.5 $0.00003 $0.00382

Measured 7d ago against content hash 2f3dbf9c1675, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade C, and why

bun-guides-util scanned grade C with 2 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 7d 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.

Downloads and executes remote codehighSupply chain

curl | sh runs whatever the server returns today, which is not necessarily what it returned when this was reviewed.

curl -fsSL https://bun.sh/install | bash -s "bun-v1.3.3"

Makes network callslowCapability

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

curl -fsSL https://bun.sh/install | bash -s "bun-v1.3.3"
skills/guides-util/SKILL.md · 610 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. 7d ago First seen · 610 lines · 28 tokens per session scan C 2f3dbf9c1675

Subscribe to this mod's changes

bun-guides-util is a skill published in the GitHub repository LuigiColantuono/bun-docs-toolkit (0 stars, last pushed 3d ago), with no licence file. It adds 28 tokens to every session and 3,823 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it C with 2 findings (downloads and executes remote code, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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