Borrowing it
Nothing to install: this file belongs to praveenjuge/teak. 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/praveenjuge/teak/main/.agents/skills/ultracite/SKILL.mdgit clone --depth 1 https://github.com/praveenjuge/teakWrote 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/praveenjuge/teak/ultracite)<a href="https://agentmods.dev/skills/praveenjuge/teak/ultracite"><img src="https://agentmods.dev/badge/skills/praveenjuge/teak/ultracite/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/praveenjuge/teak/ultracite"><img src="https://agentmods.dev/badge/skills/praveenjuge/teak/ultracite.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 | $0.00142 | $0.01256 |
| Opus 5 | $0.00071 | $0.00628 |
| Sonnet 5 | $0.00028 | $0.00251 |
| Haiku 4.5 | $0.00014 | $0.00126 |
Grade A, and why
ultracite 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 11d 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.
This is a copy
88% identical to ultracite — 22 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
How it starts
The opening of the file, as written. The whole thing — 103 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Ultracite
Zero-config linting and formatting for JS/TS projects. Supports three linter backends: Biome (recommended), ESLint + Prettier, and Oxlint + Oxfmt.
Detecting Ultracite
Check if ultracite is in package.json devDependencies. Detect the active linter by looking for:
biome.jsonc→ Biomeeslint.config.mjs→ ESLint.oxlintrc.json→ Oxlint
CLI Commands
# Check for issues (read-only)
bunx ultracite check
# Auto-fix issues
bunx ultracite fix
# Diagnose setup problems
bunx ultracite doctor
# Initialize in a new project
bunx ultracite init
Replace bunx with npx, pnpx, or yarn dlx depending on the package manager.
check and fix accept optional file paths: bunx ultracite check src/index.ts.
Initialization
bunx ultracite init runs an interactive setup. For non-interactive (CI) use, pass flags:
bunx ultracite init \
--pm bun \
--linter biome \
--editors vscode cursor \
--agents claude copilot \
--frameworks react next \
--integrations husky lint-staged \
--quiet
Flags:
--pm—npm|yarn|pnpm|bun--linter—biome(recommended) |eslint|oxlint--editors—vscode|zed|cursor|windsurf|antigravity|kiro|trae|void--agents—claude|codex|copilot|cline|amp|gemini|cursor-cli+ 19 more--frameworks—react|next|solid|vue|svelte|qwik|remix|angular|astro|nestjs--integrations—husky|lefthook|lint-staged|pre-commit--hooks— Enable auto-fix hooks for supported agents/editors--type-aware— Enable type-aware linting (oxlint only)--skip-install— Skip dependency installation--quiet— Suppress prompts (auto-detected whenCI=true)
Init creates config that extends Ultracite presets:
// biome.jsonc
{ "extends": ["ultracite/biome/core", "ultracite/biome/react"] }
Framework presets available per linter: core, react, next, solid, vue, svelte, qwik, remix, angular, astro, nestjs.
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.
- 11d ago First seen · 103 lines · 142 tokens per session scan A 84da9f8f211a
ultracite is a skill published in the GitHub repository praveenjuge/teak (25 stars, last pushed 3d ago), licensed MIT. It adds 142 tokens to every session and 1,256 once invoked, about $0.0007 per session on Opus 5. A static security scan graded it A with 0 findings. It is 88% identical to ultracite, differing in 22 lines, and is treated as a copy.
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