A verification procedure for changes to the Bun JavaScript runtime that runs the debug build from start to finish. Bun is a JavaScript runtime used to execute JavaScript and TypeScript programs.

Use it after changing Bun's runtime code when you need to verify the debug binary in a complete execution flow.

It checks the runtime change through an actual end-to-end execution instead of relying only on isolated tests. The description does not provide further details about the checks performed.

verify — Skill by oven-sh

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.

agentmods

npx agentmods add skills/oven-sh/bun/verify

Any agent

npx skills add oven-sh/bun --skill verify

Clone the repo

git clone --depth 1 https://github.com/oven-sh/bun

Made for: Claude Code, Codex.

Per session 16 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 651 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. Scan, not verified.

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	$0.00016	$0.00651
Opus 5	$0.00008	$0.00326
Sonnet 5	$0.00003	$0.00130
Haiku 4.5	$0.00002	$0.00065

Measured 2d ago against content hash aec5d18d6ca3, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

verify 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 2d 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/verify/SKILL.md · 47 lines

The source is not reproduced here

No licence file

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.

2d ago First seen · 47 lines · 16 tokens per session scan A aec5d18d6ca3

Subscribe to this mod's changes

verify is a skill published in the GitHub repository oven-sh/bun (95,832 stars, last pushed today), with no licence file. It adds 16 tokens to every session and 651 once invoked, about $0.0001 per session on Opus 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.

Debugging bun bundler javascript javascriptcore jsx nodejs

verify

Getting it into your agent

What it costs to keep this loaded

Grade A, and why

Nothing flagged

The source is not reproduced here

No licence file

What this file has done since we first saw it

Other skills, from other repositories

bun-docs

mcpp-style-ref

mbun-runtime-debugging

dev-process

issue-reporting

tdd-workflow