Gives Claude actual browser primitives so it stops asking you for screenshots. Five core operations: see() snapshots a page with DOM, console, and network state; act() executes click and fill sequences; extract() pulls structured data against Zod schemas; judge() scores pages against rubrics; compare() runs A/B tests. Ships with an 18-persona audit preset that runs real Chromium sessions across device classes, locales, and geographies. Local first, so screenshots and business logic stay on your machine. Install via npm, point your MCP config at pixelcheck-mcp, and your agent can navigate, verify, and score frontend changes without you playing screenshot courier.
claude mcp add --transport stdio xcodethink-pixelcheck uvx pixelcheck