rixinhahaha/snipScreenshot and diagram tool for AI agents. Capture and annotate screenshots to show Claude what you mean — or let the agent render Mermaid diagrams and open them for visual review. Approve, annotate, or request changes with text feedback. Built-in review mode with structured responses. CLI and MCP server for Claude Code, Cursor, Windsurf, Cline. macOS, open source, free.