Convert JSON to TOON (about 40% fewer LLM tokens) and TOON back to JSON. Free, no auth.
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First seen 4 Oct 2026. One server, whatever directories list it: each directory listing keeps its own page and history.
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Tools
| Tool | Description | Behaviour |
|---|---|---|
| json_to_toon | Convert JSON to TOON (Token-Oriented Object Notation), a compact format that uses about 40% fewer LLM tokens than JSON. Best for uniform arrays of objects. | Read-only |
| toon_to_json | Decode a TOON document back to pretty-printed JSON. | Read-only |
| Directory | Listing | Tier | First seen |
|---|---|---|---|
| Official MCP Registry | JSON to TOON | - | 4 Oct 2026 |