List Walmart Supported Carriers
GET/api/walmart/:integrationInstance/supported-carriers
Get the shipping carriers Walmart accepts on shipment confirmations (UPS, USPS, FedEx, DHL, OnTrac, and many more), together with the current mapping of each Walmart carrier to a shipping method in SKU.io.
Any valid API token can call this endpoint — no specific scope required. Manage tokens.
Use this to discover valid carrier values before submitting fulfillments, and to review which internal shipping methods will be reported to Walmart for each carrier. shipping_methods lists all shipping methods available for mapping. Returns 404 if the integration instance has no linked sales channel.
Request
Responses
- 200
- 401
- 403
- 404
- 429
OK
Response Headers
Unauthenticated — the bearer token is missing, revoked, expired, or malformed. Never retry automatically; fix the credential. See the Errors guide.
Forbidden — the token lacks a required scope, the endpoint is not available to API tokens, or the user behind the token lacks the permission. A human must adjust the token scopes or user permissions; do not retry.
Not Found
Response Headers
Rate limited — platform limit is 1,000 requests/min; individual tokens may carry lower limits. Honor the Retry-After header before retrying. See the Rate Limits guide.