MCP tool discovery costs 10,000+ tokens. mcptoon costs 350.
One MCP client for every AI agent. Cross-platform. Zero dependencies.
If this saves you tokens, please star the repo — it helps others discover it.
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Every MCP-enabled conversation burns tokens onsyntax, not data:
On a 128K context window, that’s30-55% gone. Not on work. On syntax.
mcptoon is a CLI client that connects to any MCP server (stdio or HTTP) and outputsTOON(Token-Optimized Object Notation) instead of JSON.
Zero dependencies. Pure Python. 50KB. Works withevery AI agent— Claude Code, Codex, OpenCode, Cursor, CatPaw, anything that runs shell commands.
JSON (287 tokens)— what every other MCP client returns:
TOON (5 tokens)— what mcptoon returns:
98% reduction for tool discovery, 60% for full schema, zero information lost.
Zero dependencies. 50KB. Python 3.10+. Windows, macOS, Linux.