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POST
Sell items

Authorizations

api-key
string
header
required

Your raw API key. Generate, rotate, and revoke keys from the merchant dashboard. Keys can optionally be bound to one or more allowed source IPs — requests from any other IP are rejected with API_KEY_IP_DENIED.

Headers

On-Behalf-Of
string

Sub-user UUID or the merchant's externalId for that sub-user. Required for sub-user-context routes; rejected (via requireMerchant) on merchant-context routes.

Required string length: 1 - 128

Body

application/json
items
object[]
required
Required array length: 1 - 100 elements
tradeUrl
string<uri>

Optional. Must belong to the same Steam account linked to the user (validated against their steamId) — it can only re-point to the user's own trade URL, never redirect payout items elsewhere. Omit to use the user's saved trade URL. Rejected with TRADEURL_STEAM_MISMATCH on mismatch.

externalId
string

Your own correlation id, echoed back on the Trade. Idempotent per user.

Maximum string length: 128

Response

Created.

requestId
string
required
success
boolean
required
data
object

Present when success: true. Shape varies per endpoint.

error
object