precisioncalc mcp for ChatGPT

io.github.inity13/precisioncalc-mcp

High-precision finance & business calculations for AI agents — exact decimals, never floats.

client:ChatGPT transport:streamable-http runtime:npm tools:11

Install precisioncalc mcp in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://precisioncalc-mcp.pages.dev/mcp

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