McpStamp Per Diem for ChatGPT

io.github.theluckystrike/per-diem

Travel allowances from bundled Polish, HMRC and GSA rate tables, with partial days and meals.

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

Install McpStamp Per Diem in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://mcp.zovo.one/mcp/per-diem

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