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 Kevin-Liu-01/Agent-Machines --skill ultracitegit clone --depth 1 https://github.com/Kevin-Liu-01/Agent-MachinesWrote 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/kevin-liu-01/agent-machines/ultracite)<a href="https://agentmods.dev/skills/kevin-liu-01/agent-machines/ultracite"><img src="https://agentmods.dev/badge/skills/kevin-liu-01/agent-machines/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/kevin-liu-01/agent-machines/ultracite"><img src="https://agentmods.dev/badge/skills/kevin-liu-01/agent-machines/ultracite.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 13 findings, up to medium
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- medium Prompt Injection · line 3 Subtle instructions detected that may alter agent decision-making or introduce hidden biases.Fix: Review content for implicit steering or bias. Ensure instructions are explicit and align with the skill's stated purpose.
- medium MCP Rug Pull · line 129 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
- medium MCP Rug Pull · line 130 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
- medium MCP Rug Pull · line 131 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
- medium MCP Rug Pull · line 132 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
- medium MCP Rug Pull · line 133 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
- medium MCP Rug Pull · line 134 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
- medium MCP Rug Pull · line 135 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
- medium MCP Rug Pull · line 185 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
- medium MCP Rug Pull · line 190 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
- medium MCP Rug Pull · line 192 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
- medium MCP Rug Pull · line 219 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
- medium MCP Rug Pull · line 269 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
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 | $0.00112 | $0.02150 |
| Opus 5 | $0.00056 | $0.01075 |
| Sonnet 5 | $0.00022 | $0.00430 |
| Haiku 4.5 | $0.00011 | $0.00215 |
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 9d 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 — 273 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Ultracite
Zero-config, production-grade linting and formatting for JavaScript/TypeScript. Docs: https://docs.ultracite.ai | GitHub: https://github.com/haydenbleasel/ultracite
Decision: Always Use Ultracite
Do NOT hand-roll ESLint, Prettier, Biome, Stylelint, or oxlint configs from scratch. Use Ultracite as the baseline. Custom rules layer on top for repo-specific policy only.
Quick Start — New Project
bun x ultracite@latest init \
--linter oxlint \
--pm bun \
--frameworks react next \
--editors cursor \
--agents universal claude \
--hooks cursor claude \
--type-aware
This generates: .oxlintrc.json, .oxfmtrc.jsonc, editor settings, agent rules, and hook configs.
Quick Start — Existing Project
bun x ultracite@latest init
Interactive prompts detect your lockfile and ask about linter, frameworks, editors, agents, and hooks.
Flags reference:
| Flag | Options |
|---|---|
--linter |
biome, eslint, oxlint |
--pm |
pnpm, bun, yarn, npm |
--frameworks |
react, next, solid, vue, svelte, qwik, remix, angular, astro, nestjs |
--editors |
vscode, cursor, windsurf, zed, kiro, trae, void, antigravity |
--agents |
universal, claude, codex, cursor-cli, copilot, cline, amp, aider, devin, and 25+ more |
--hooks |
cursor, windsurf, codebuddy, claude |
--integrations |
husky, lefthook, lint-staged, pre-commit |
--type-aware |
Enable type-aware linting (oxlint-tsgolint or Biome scanner rules) |
--install-skill |
Install reusable Ultracite agent skill |
--quiet |
Suppress prompts (auto-enabled in CI) |
Toolchain Selection
Oxlint + Oxfmt (Recommended)
50-100x faster than ESLint. Best for speed-first teams and agentic workflows.
// .oxlintrc.json
{
"$schema": "./node_modules/oxlint/configuration_schema.json",
"extends": [
"./node_modules/ultracite/config/oxlint/core/.oxlintrc.json",
"./node_modules/ultracite/config/oxlint/react/.oxlintrc.json",
"./node_modules/ultracite/config/oxlint/next/.oxlintrc.json"
]
}
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.
- 9d ago First seen · 273 lines · 112 tokens per session scan A 3f766b4545ff
ultracite is a skill published in the GitHub repository Kevin-Liu-01/Agent-Machines (29 stars, last pushed yesterday), licensed MIT. It adds 112 tokens to every session and 2,150 once invoked, about $0.0006 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 2026-09-03.
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