Uses Chrome DevTools MCP for inspecting, debugging, and testing cookies, session state, authentication issues, and cookie consent compliance. Use when diagnosing 401/403 errors, authentication redirects, session expiration, Cookie/Set-Cookie header issues, cookie banner consent conformance, or third-party cookie/SameSite/Partitioned cookie warnings.
Install
npx skills add ChromeDevTools/chrome-devtools-mcp --skill cookie-debuggingnpx skills add ChromeDevTools/chrome-devtools-mcp --skill cookie-debugging -a claude-code -gnpx skills add ChromeDevTools/chrome-devtools-mcp --skill cookie-debugging -a codex -ggemini skills install https://github.com/ChromeDevTools/chrome-devtools-mcp.git --path skills/cookie-debugginggh skill install ChromeDevTools/chrome-devtools-mcp cookie-debugginggit clone --depth 1 https://github.com/ChromeDevTools/chrome-devtools-mcp /tmp/ChromeDevTools__chrome-devtools-mcp
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/ChromeDevTools__chrome-devtools-mcp/skills/cookie-debugging ~/.claude/skills/cookie-debugging # Claude Code
cp -R /tmp/ChromeDevTools__chrome-devtools-mcp/skills/cookie-debugging ~/.agents/skills/cookie-debugging # Codex, Cursor, Gemini CLI, Copilot, OpenCode