Toon

关于

Toon is an MCP server designed to significantly reduce the cost and improve the efficiency of Large Language Model (LLM) interactions. By implementing the TOON format, a specialized, token-efficient alternative to JSON, this tool enables developers to realize substantial token savings—ranging from 18% to 40%. It integrates seamlessly with popular AI development environments like Claude Desktop, Claude Code CLI, and Cursor IDE, while also offering a generic stdio transport for custom client integrations. Toon provides a suite of utilities for encoding JSON to TOON, decoding TOON back to JSON, validating TOON syntax, and analyzing token and byte savings.

主要功能

• 3 GitHub stars
• Achieves 18-40% token savings for LLM prompts
• Converts JSON to the TOON format (`toon_encode`)
• Converts TOON back to JSON (`toon_decode`)
• Validates TOON syntax without full decoding (`toon_validate`)
• Compares token and byte counts between JSON and TOON (`toon_stats`)

使用案例

• Reducing token consumption and operational costs for Large Language Model (LLM) applications
• Integrating token-efficient data serialization into AI development environments and custom MCP clients
• Converting and validating data between JSON and the TOON format for optimized data exchange