LedgerCrossing for QuickBooks Desktop for ChatGPT

com.ledgercrossing/quickbooks-desktop

QuickBooks Desktop MCP server: all 240 qbXML operations for Claude, ChatGPT and other AI assistants

client:ChatGPT transport:streamable-http runtime:mcpb

Install LedgerCrossing for QuickBooks Desktop in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://{remote_address}/mcp

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