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.
curl -O https://raw.githubusercontent.com/bastani-inc/atomic/main/.agents/skills/typescript-expert/SKILL.mdgit clone --depth 1 https://github.com/bastani-inc/atomicWrote 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.
[](https://agentmods.dev/skills/bastani-inc/atomic/typescript-expert)<a href="https://agentmods.dev/skills/bastani-inc/atomic/typescript-expert"><img src="https://agentmods.dev/badge/skills/bastani-inc/atomic/typescript-expert/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.
<a href="https://agentmods.dev/skills/bastani-inc/atomic/typescript-expert"><img src="https://agentmods.dev/badge/skills/bastani-inc/atomic/typescript-expert.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00033 | $0.03708 |
| Opus 5.5 | $0.00013 | $0.01483 |
| Sonnet 5.5 | $0.00007 | $0.00742 |
| Haiku 4.5 | $0.00003 | $0.00371 |
Grade C, and why
typescript-expert scanned grade C 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.
Recursive force deletehighDestructive command
rm -rf with a variable or a broad path is one typo away from removing the wrong tree.
4. Try clearing cache: `rm -rf node_modules/.cache .tsbuildinfo` 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.
What ships with it
4 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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 · 437 lines · 33 tokens per session scan C 4906643aa0d7
typescript-expert is a skill published in the GitHub repository bastani-inc/atomic (870 stars, last pushed yesterday), with no licence file. It adds 33 tokens to every session and 3,708 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it C with 1 finding (recursive force delete). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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Use when writing, reviewing, or debugging code in a Nifra project (@nifrajs/ packages, nifra CLI, server()/defineContract, loaders and actions, file routes under routes/). Explains how to reach Nifra's live MCP tools so signatures come from the installed version instead of memory, and which sibling skill to load for…
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Measures visual line width (tab = 4) and applies TSF wrap rules without treating 80 columns as a general max. Use when wrapping PHP or JS, compact if/return/continue/break, ternary or coalesce breaks, &&/|| conditions, function-argument wraps, or when guessing whether a line is too long.
trailing-comma
Adds trailing commas on multiline PHP/JS calls, arrays, and objects. Use when wrapping arguments, writing multiline applyfilters/doaction/sprintf, or when a closing ) or ] sits on its own line without a comma on the last argument.