webPosto for ChatGPT

io.github.mcp-dir/webposto-mcp

webPosto ERP (management for gas stations and convenience stores) via session capture with your auth

client:ChatGPT transport:streamable-http tools:8

Install webPosto in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://api.mcp.ai/p_webposto

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