activeing123/mcptoon

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MCP tool lists eat 71,929 tokens at 255 tools — more than half a 128K window before you ask anything. mcptoon reads the same tools back at 581 (-99.2%, measured). 128KB CLI, zero deps. Compute your own: activeing123.github.io/mcptoon/tools/token-tax

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20 Aug 2026 · 0:29

mcptoon: Cut MCP Token Use by 97% (10,000 Tokens → 350)

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mcptoon turns verbose MCP tool discovery from 10,000 tokens down to 350. This pure Python CLI replaces JSON with TOON format, cutting tool listings by 97% and structured results by more than half. It connects to any MCP server via stdio or HTTP, supports stdin, doctor commands, fuzzy matching, and slim mode. Works with Claude Code, Cursor, CatPaw, and other AI agents across every platform.