ISZ Shiwake AI (Japanese tax & accounting) for ChatGPT

ai.shiwake/mcp

Japanese tax & accounting: year-end adjustment, account titles, invoice numbers, consumption tax.

client:ChatGPT transport:streamable-http runtime:npm tools:9

Install ISZ Shiwake AI (Japanese tax & accounting) in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://mcp.shiwake.ai/mcp

Custom connectors are a paid-plan feature and take a remote URL only. ChatGPT cannot run a packaged server locally. ChatGPT docs