---
title: Integration guides
description: Access, authentication, shipment workflows, and troubleshooting.
---

- [API access](/guides/api-access): staff enablement, key creation, permission selection, copying, and revocation.
- [Authentication](/guides/authentication): base URLs, permissions, resource IDs, and update fields.
- [Select a pickup location](/guides/pickup-locations): GLS parcel-shop discovery and the current price and shipment input mapping.
- [Shipment lifecycle](/guides/shipments): drafts, booking acceptance, background results, tracking, cancellation, and labels.
- [Idempotency and retries](/guides/retries): safe mutation retries, price changes, and account rate limits.

The [API reference](/reference) contains the endpoint contracts, ordered services, prices, senders, receivers, pickup locations, and shipments.

See [Troubleshooting](/reference/troubleshooting) for response envelopes, shared HTTP errors, and next steps.