UK Logistics (buy Royal Mail + more labels + tracking via Shippo)

Create a United Kingdom shipping label via Shippo — pass a to_address, from_address and parcel (dimensions in CENTIMETRES, weight in GRAMS by default), and the server fetches carrier rates, buys the CHEAPEST rate by default (or the carrier/service you specify), and returns the shipment_id, transaction_id, tracking_number, printable label_url and the price paid (GBP). Recommended carrier: Royal Mail Tracked 24/48 via the Shippo master account — no Royal Mail contract or merchant account needed — …

Track a United Kingdom shipment by its tracking_number (the one create_shipment returned, or any carrier tracking number) plus its carrier. Returns the current status with a plain-English hint. Status values (Shippo enum): UNKNOWN, PRE_TRANSIT (label made, not yet picked up), TRANSIT, DELIVERED, RETURNED, FAILURE. Raw carrier scan details are always included. carrier defaults to "royal_mail"; for TEST tokens use carrier="shippo" with mock numbers SHIPPO_TRANSIT / SHIPPO_DELIVERED. Safe to call a…

Request a refund for a United Kingdom shipping label bought via create_shipment, by its transaction_id. Refund is only possible for UNUSED labels that were never scanned by the carrier; already-shipped labels cannot be refunded. Returns refund_status: QUEUED / PENDING (accepted, carrier still processing — most common), SUCCESS (money returned), or ERROR (not eligible, e.g. already scanned). Carriers can take time to move QUEUED/PENDING → SUCCESS.