generated: '2026-08-27'
method: searched
source: openapi/aftership-labels-api-openapi.yml servers[] + https://api.aftership.com/llms.txt
sandbox_published: true
summary: AfterShip publishes a real sandbox host for the Shipping (Postmen) API only. Every Shipping split spec
  lists https://sandbox-api.aftership.com/postmen/v3 as its FIRST server, ahead of production. No other AfterShip
  product publishes a sandbox host, test key prefix, magic identifier or fixture set.
environments:
- name: sandbox
  api: AfterShip Shipping API
  base_url: https://sandbox-api.aftership.com/postmen/v3
  source: 'servers[0] in every harvested Shipping spec; also named in https://api.aftership.com/llms.txt as "Sandbox
    environment: sandbox-api.aftership.com"'
  auth: Same as-api-key header as production; AfterShip does not publish a distinct test-key prefix.
  note: Lets a caller exercise rate shopping, label creation, manifests and pickups without generating live carrier
    labels.
- name: production
  api: all AfterShip APIs
  base_url: https://api.aftership.com/
test_data:
  test_cards: null
  test_accounts: null
  magic_identifiers: null
  test_clocks: null
  note: AfterShip publishes no test cards, magic tracking numbers, seeded fixtures or time-simulation tooling. Nothing
    was invented here — the absence is the finding.
other_test_surfaces:
- name: Try API Endpoints
  url: https://www.aftership.com/docs/tracking/quickstart/try-api-endpoints
  kind: in-docs console
  note: Interactive request builder embedded in the Stoplight-rendered API reference.
- name: Public MCP server
  url: https://mcp.aftership.com/tracking/public
  kind: keyless live endpoint
  note: Anonymous, read-only shipment tracking with no account required — the only AfterShip surface callable without
    a key. Fair-use limited.
- name: Send test webhook
  url: https://www.aftership.com/docs/tracking/webhook/webhook-overview
  kind: trigger
  note: The webhook settings screen offers a "Send test webhook" action to validate a destination URL; a 2xx response
    is required for the URL to validate.