PostCode Check for ChatGPT

dev.workers.mike-tusa.postcodecheck/postcodecheck

Validate and normalize postal codes offline for 252 countries and territories. Format check only.

client:ChatGPT transport:streamable-http tools:2

Install PostCode Check in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://postcodecheck.mike-tusa.workers.dev/mcp

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