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 wahidyankf/ose-public --skill programming-javascriptgit clone --depth 1 https://github.com/wahidyankf/ose-publicWrote 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/wahidyankf/ose-public/programming-javascript)<a href="https://agentmods.dev/skills/wahidyankf/ose-public/programming-javascript"><img src="https://agentmods.dev/badge/skills/wahidyankf/ose-public/programming-javascript/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/wahidyankf/ose-public/programming-javascript"><img src="https://agentmods.dev/badge/skills/wahidyankf/ose-public/programming-javascript.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 | $0.00048 | $0.01005 |
| Opus 5.5 | $0.00019 | $0.00402 |
| Sonnet 5.5 | $0.00010 | $0.00201 |
| Haiku 4.5 | $0.00005 | $0.00101 |
Grade A, and why
programming-javascript 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.
How it starts
The opening of the file, as written. The whole thing — 76 lines — stays where its author put it; the contents beside it link to each section on GitHub.
JavaScript Programming
Every JavaScript rule is owned by JavaScript Standards. Test-Driven Development and Test Boundaries and Gates govern tests and gates, Red, Green, Refactor runs each cycle, and Developing Applications carries the judgement that holds in every language. This skill adds only the procedure and judgement of applying them in JavaScript. Where a sentence here seems to state a rule, the standard decides.
Start From What the Project Records
- Find how the file is checked. Read the compiler configuration and, under per-file checking, the top of the file. A file you are about to change that nobody checks is a finding to raise before you add to it.
- Compare the configuration with the standard. A relaxed option or a lint rule switched off is not a baseline to copy into new code.
- Run the type check, lint, format check, and tests on the untouched tree. A gate already failing is handled under Preexisting Error Resolution.
- List the increments, each one observable behaviour, simplest first, including every expected failure path.
Type Through JSDoc as You Write
Write the JSDoc for a function before its body: the parameter and return types, and the failures it can report. A function whose types are hard to write usually takes a shape that is not yet decided, and settling it now is cheaper than after several callers depend on it. Run the type check as part of each green, not only at the end.
When the checker rejects a change, fix the code. Reaching for an expected-error directive means the design needs attention, and the directive, when truly warranted, carries the reason the standard asks for.
What ships with it
1 file 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.
- 2d ago First seen · 76 lines · 48 tokens per session scan A 936df36d15b0
programming-javascript is a skill published in the GitHub repository wahidyankf/ose-public (12 stars, last pushed today), licensed MIT. It adds 48 tokens to every session and 1,005 once invoked, about $0.0002 per session on Opus 5.5. 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 2026-10-14.
Other skills, from other repositories
typescript-test-writing
Use this skill when writing or modifying tests in the llxprt-code repository. Covers mandatory TDD, behavioral testing, bun:test conventions and file naming, mock hygiene (no mock theater), and what never to test. Distilled from dev-docs/RULES.md, which remains the source of truth.
typescript-eval
Test TypeScript code snippets before persisting as skills.
Unit Test Scaffold (TypeScript)
Generate TypeScript unit test skeletons (Jest/Vitest) from specifications.
typescript-standard
Apply opinionated TypeScript and testing standards — strict mode with no any, 10-20 line methods, and a test-first loop using data builders, Faker, and Given-When-Then. Use when writing, reviewing, or testing TypeScript, setting up Jest or Playwright, or checking TS code against a project's conventions.
quality-gates-node
Quality gates determinísticos para aplicações e serviços Node.js, JavaScript e TypeScript. Use quando o usuário pedir "quality gate Node.js", ESLint ou tsc em Node.js, testes, cobertura, complexidade, SAST, SCA, build ou baseline para Node.js.
ts-quality
A TypeScript quality-checking workflow that runs the TypeScript compiler, ESLint, Prettier, and tests. TypeScript is JavaScript with static type checking; ESLint checks code patterns, and Prettier checks formatting.