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.
npx skills add duck4nh/antigravity-kit --skill typescript-expertgit clone --depth 1 https://github.com/duck4nh/antigravity-kitWrote 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/duck4nh/antigravity-kit/typescript-expert)<a href="https://agentmods.dev/skills/duck4nh/antigravity-kit/typescript-expert"><img src="https://agentmods.dev/badge/skills/duck4nh/antigravity-kit/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/duck4nh/antigravity-kit/typescript-expert"><img src="https://agentmods.dev/badge/skills/duck4nh/antigravity-kit/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 | $0.00076 | $0.03584 |
| Opus 5.5 | $0.00030 | $0.01434 |
| Sonnet 5.5 | $0.00015 | $0.00717 |
| Haiku 4.5 | $0.00008 | $0.00358 |
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 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.
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
No licence file
A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.
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 · 430 lines · 76 tokens per session scan C 88b62c21b51e
typescript-expert is a skill published in the GitHub repository duck4nh/antigravity-kit (15 stars, last pushed 8mo ago), with no licence file. It adds 76 tokens to every session and 3,584 once invoked, about $0.0003 per session on Opus 5.5. A static security scan graded it C with 1 finding (recursive force delete). It comes from a forked repository.
Other skills, from other repositories
typescript-idioms
TypeScript strict typing: type narrowing, discriminated unions, Zod runtime validation, generic utility types, and Vitest testing. Use when writing or refactoring TypeScript across frontend, backend, or full-stack projects.
hono-idioms
Hono lightweight web framework patterns: type-safe route handlers, middleware composition, Zod validation, and RPC clients for Cloudflare Workers, Node, or Bun. Use when building Hono APIs. Pair with typescript-idioms.
basic-inline-skill
A minimal instruction-only skill with inline content and the function builder alternative.
wrap
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.
nifra
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…