AfterShip API
Unified shipment tracking API aggregating tracking data from 900+ carriers worldwide. Provides real-time tracking status, webhooks for tracking events, and customer notification infrastructure.
Score Breakdown
⚙ Agent Friendliness
🔒 Security
API key auth. Webhook HMAC validation. SOC2 Type II. Shipping tracking data — sensitive for customer privacy. Key doesn't expire by default.
⚡ Reliability
Best When
An agent needs to aggregate and react to tracking events across many carriers without building individual carrier integrations, especially for post-purchase customer experience.
Avoid When
You also need to create labels — you'll need a separate shipping API alongside AfterShip.
Use Cases
- • Tracking shipments across 900+ carriers through a single unified API
- • Triggering customer notifications at key delivery milestones (shipped, out for delivery, delivered)
- • Building branded tracking pages with real-time status updates
- • Proactive exception detection (delayed, failed delivery) for customer support automation
- • Returns tracking and reverse logistics visibility
Not For
- • Label creation (tracking only — use EasyPost or Shippo for labels)
- • Carrier rate shopping
- • Order management (tracking-focused, not order management)
- • Real-time GPS tracking of vehicles
Interface
Authentication
API key passed via aftership-api-key header. Simple key-based auth with no OAuth complexity. Test and production use the same credentials against the live API.
Pricing
Free tier is limited but good for development. Paid plans scale by shipment tracking volume. Enterprise plans include dedicated support, SLAs, and branded notifications.
Agent Metadata
Known Gotchas
- ⚠ Carrier must be detected (slug) or specified — unknown carriers may not be auto-detected accurately
- ⚠ Tracking data freshness depends on carrier polling frequency — not truly real-time for all carriers
- ⚠ Webhook delivery is not guaranteed — agents relying on webhooks should implement polling fallback
- ⚠ Some carriers have limited API access and tracking may be delayed or incomplete
- ⚠ AfterShip adds shipments to tracking list — agents must clean up old shipments to avoid hitting limits
- ⚠ Checkpoint timestamps may be in carrier local time without timezone — requires normalization
Alternatives
Full Evaluation Report
Detailed scoring breakdown, competitive positioning, security analysis, and improvement recommendations for AfterShip API.
Scores are editorial opinions as of 2026-03-06.