{"id":"purupurupu-css-noop-checker","name":"css-noop-checker","af_score":46.0,"security_score":39.2,"reliability_score":23.8,"what_it_does":"Chrome DevTools extension (and MCP tool server) that detects CSS declarations that have no visible effect on the selected DOM element or across the full page. It uses computed styles plus heuristics, and reports actionable warnings with fix suggestions. The MCP server exposes the rules engine for AI-assisted analysis using Playwright.","best_when":"You are developing web UI in Chromium-based browsers and want fast feedback on CSS declarations that are silently ignored due to layout context, optionally via an MCP-enabled agent workflow.","avoid_when":"You need deterministic, spec-perfect linting independent of the browser engine; or you cannot run Playwright/Chromium to evaluate computed styles.","last_evaluated":"2026-03-30T15:34:07.412796+00:00","has_mcp":true,"has_api":false,"auth_methods":[],"has_free_tier":false,"known_gotchas":["Results depend on Chromium behavior and page layout context; the same CSS may produce different warnings across browsers or dynamic DOM states.","Full-page scans can be more expensive than selected-element mode; agents should manage workload/timeouts when calling the MCP tools.","Rule correctness relies on computed styles/heuristics and Playwright coverage; treat detections as guidance rather than formal proof."],"error_quality":0.0}