Toon Formatter

If you're passing around arrays of logs, API responses, or database results in your conversations with Claude, this is worth trying. TOON eliminates repetitive JSON keys by putting them in a header row and treating data like a CSV table. The skill auto-converts arrays with 5+ items and claims 30-60% token savings, which matters when you're bumping into context limits. It includes a compiled Zig encoder that's supposedly 20x faster than JavaScript, plus commands for encoding, decoding, and analyzing potential savings. The tabular format is readable enough once you see it, though you'll want to check the delimiter rules if your values contain commas or tabs.

Install to Claude Code

npx -y skills add raintree-technology/claude-starter --skill toon-formatter --agent claude-code