Buy listings from your balance
Buy 1–10 listings by id, debited from your CSBoard balance. Requires trading enabled on the key + a linked Steam account and trade URL. Buys are charged at the LIVE price at execution; always send max_price_usd as an atomic overcharge ceiling. Idempotent via the Idempotency-Key header or idempotency_key in the body.
Authorizations
Send your key as a Bearer token on every request: Authorization: Bearer csb_pub_.... Generate keys in your CSBoard profile.
Headers
Optional. A retried request with the same key replays the original order instead of buying twice.
Body
1–10 unique ids from /v1/listings. Some items can't be combined in a single order — if so the order is rejected and you can split it.
1 - 10 elementsTotal ceiling in USD. Strongly recommended — your overcharge protection, enforced atomically inside the locked debit.
Optional; or send the Idempotency-Key header. Replays the original order on retry.