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freee + MCP: I Automated My Japanese Tax Return With Claude Code — 3 Things That Broke in Production

by Ken Imoto

freee ships an MCP server. I wired it up to Claude Code for my 2026 tax return. Bookkeeping got 20× faster. Then production surfaced three breakage modes MCP couldn't fix on its own.

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Anthropic MCP

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freee + MCP: I Automated My Japanese Tax Return With Claude Code — 3 Things That Broke in Production

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