Crit is a local review tool for examining agent-generated plans, code changes, web applications, and static HTML. Developers use it to point to specific problems and send feedback back to their coding agent, with a different review interface for each type of output.
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.
git clone --depth 1 https://github.com/tomasz-tomczyk/critWrote 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/rules/tomasz-tomczyk/crit/frontend-css)<a href="https://agentmods.dev/rules/tomasz-tomczyk/crit/frontend-css"><img src="https://agentmods.dev/badge/rules/tomasz-tomczyk/crit/frontend-css/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/rules/tomasz-tomczyk/crit/frontend-css"><img src="https://agentmods.dev/badge/rules/tomasz-tomczyk/crit/frontend-css.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 | $0.00000 | $0.00321 |
| Opus 5.5 | $0.00000 | $0.00128 |
| Sonnet 5.5 | $0.00000 | $0.00064 |
| Haiku 4.5 | $0.00000 | $0.00032 |
Grade A, and why
frontend-css 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 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.
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.
What it actually says
CSS Rules
Theming (Stylelint catches hardcoded colors; check-css-vars.sh catches undefined vars)
- When adding themed elements, define color values in ALL 4 theme blocks in theme.css:
:root(dark fallback),prefers-color-scheme: light,[data-theme="dark"],[data-theme="light"].
Responsive & Touch
- Mobile layout rules go inside
@media (max-width: 768px). Touch affordances go inside@media (pointer: coarse). Desktop-only hover interactions go inside@media (pointer: fine). - Hover-only interactive elements (
.line-add,.diff-comment-btn) must bedisplay: noneby default anddisplay: flexinside@media (pointer: fine). This prevents flash-on-tap on touch devices where.drag-endpointbriefly applies. - Touch targets must be ≥ 44×44px under
@media (pointer: coarse)(WCAG 2.5.5). - Comment textarea and reply input must be
font-size: 16pxunder mobile to suppress iOS Safari focus-zoom.
Selectors
- After renaming a CSS class or DOM element ID, search for and remove ALL references to the old name in CSS AND JS.
- Check that all CSS selectors referenced in JS (
querySelector,classList.contains) match actual class names in CSS.
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 · 21 lines · 0 tokens per session scan A 8d5a754d4974
frontend-css is a cursor rule published in the GitHub repository tomasz-tomczyk/crit (1,218 stars, last pushed today), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 321 tokens. 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 2026-08-30.
Other cursor rules, from other repositories
templates
Tera template variables, blocks, and theme conventions.
features
Built-in site features (highlighting, homepage content, math, diagrams, search).
shortcodes
Built-in and custom shortcodes for markdown content.
governor
Governor — context hygiene and tool-output filtering.
seo-requirements
SEO and GEO requirements every page template must meet (meta tags, JSON-LD, feeds).
apollo-content-agent
✍️ God Agent Apollo — Content Agent — Content & Copywriting. Invoke for: pantheon, content, copywriting, seo.