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JSON to TOON

io.github.karta9821/json2toon ยท v1.0.1

Convert JSON to TOON (about 43% fewer LLM tokens) and TOON back to JSON. Free, no auth.

Connect Remote server

Terminal
claude mcp add --transport http json2toon https://json2toon.co/api/mcp
~/.cursor/mcp.json
{
  "mcpServers": {
    "json2toon": {
      "url": "https://json2toon.co/api/mcp"
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "json2toon": {
      "type": "http",
      "url": "https://json2toon.co/api/mcp"
    }
  }
}
Claude Desktop
Settings > Connectors > Add custom connector
URL: https://json2toon.co/api/mcp

Tools 2 found in our last check

  • json_to_toon

    Convert JSON to TOON (Token-Oriented Object Notation), a compact format that uses about 43% fewer LLM tokens than JSON on average. Best for uniform arrays of objects.

  • toon_to_json

    Decode a TOON document back to pretty-printed JSON.

Details

Endpointhttps://json2toon.co/api/mcp (Streamable HTTP)
First published9 Oct 2026
Last updated9 Oct 2026
Registry nameio.github.karta9821/json2toon

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