Shippo API
Multi-carrier shipping API for creating discounted labels, comparing rates, tracking packages, and managing returns across major carriers (USPS, UPS, FedEx, DHL, etc.).
Score Breakdown
⚙ Agent Friendliness
🔒 Security
API key auth. PII in shipping addresses — handle with care. SOC2 not documented. Test tokens for sandbox. Carrier credentials managed by Shippo.
⚡ Reliability
Best When
An agent needs to create shipping labels with competitive rates for e-commerce orders, especially for small-to-medium businesses that benefit from Shippo's volume-negotiated carrier rates.
Avoid When
You need enterprise-scale shipping management with advanced WMS integration.
Use Cases
- • Creating shipping labels with pre-negotiated discounted rates
- • Comparing shipping rates across carriers for e-commerce fulfillment
- • Automated return label generation for customer returns
- • Package tracking aggregation across multiple carriers
- • Manifest creation for end-of-day carrier pickups
Not For
- • Enterprise freight and LTL shipping
- • International customs brokerage at scale
- • Last-mile delivery optimization
- • Very high-volume operations where direct carrier contracts are more cost-effective
Interface
Authentication
Shippo token passed as 'ShippoToken <key>' in Authorization header (not standard Bearer). Test and live tokens are separate. Simple key-based auth with no OAuth complexity.
Pricing
Starter plan allows limited monthly labels. Postage costs are charged separately at discounted carrier rates. Professional plan removes monthly label limits and adds features like batch labels.
Agent Metadata
Known Gotchas
- ⚠ Authorization header format is 'ShippoToken <key>' not 'Bearer <key>' — common mistake
- ⚠ Rate creation and purchase are separate steps — rates expire after a period
- ⚠ Test mode uses USPS simulated labels — not all carriers available in test mode
- ⚠ Address validation is a separate API call and should precede label creation
- ⚠ Async label generation (for some carriers) requires polling status endpoint
- ⚠ International shipments require customs declarations — agents must collect line-item details
Alternatives
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Scores are editorial opinions as of 2026-03-06.