An API for the whole back office.

Every action you can take in the Guliel dashboard is available over a REST API: create invoices, log expenses, reconcile suppliers, fetch reports. Per-organization API tokens, predictable rate limits, JSON in and out.

• OAuth and personal access tokens; org-scoped.
• Idempotency keys on every mutating endpoint.
• Webhooks for invoice.paid, expense.captured, order.received, more.
• MCP server on the same surface — see /mcp.