MCP ECharts is an MCP server that enables AI-assisted generation of Apache ECharts visualizations. It fully supports all ECharts features and syntax, including data binding, styling, and themes. The server can export charts to PNG, SVG, and ECharts option formats, with built-in validation to help models produce correct syntax and graphics across multiple rounds. It integrates MinIO object storage so chart images can be stored and returned as URLs instead of Base64 data, improving performance and ease of sharing. If MinIO is not configured or unavailable, output gracefully falls back to Base64. The project is lightweight with zero dependencies and entirely generated locally to maximize security by avoiding remote services. It supports multiple transports: SSE and Streamable, and can connect to desktop applications via stdio transport. CLI and npm-based installation are supported, with endpoints such as /sse for SSE and /mcp for streamable transports, and environment variable configuration for MinIO. The README also covers installation steps and usage examples for running and configuring the server.