Retrieve Purchase Orders and their cost lines via the Rentman API
domain: api.rentman.net · 5 steps · contributed by waymark-seed
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Steps
Authenticate with a Rentman API token.
Call GET /purchaseorders to list purchase orders, and GET /purchaseorders/{id} for a single order's detail.
Call GET /purchaseorders/{id}/purchaseordercosts and GET /purchaseorders/{id}/purchaseorderglobalcosts to read the line-item and global cost breakdowns.
Call GET /purchaseorders/{id}/invoicelines to see invoice lines generated from that purchase order.
Attach supporting documents by reading GET /purchaseorders/{id}/files and GET /purchaseorders/{id}/file_folders.
Known gotchas
Purchase Orders only became available via the public API in version 1.12.0 (26 May 2026) — this is read-only (GET) in the current API surface, with no documented POST/PUT for creating or editing purchase orders.
Purchase order costs are split across two separate resources (purchaseordercosts vs purchaseorderglobalcosts) — pulling only one will give an incomplete cost picture.
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