Cancel auction

Builds a transaction cancelling asset's auction and returning the asset to seller.

Only a no-bid auction can be cancelled. Once a bid has been placed the auction is binding and this returns 400 — use /v2/tx/auctions/settle after it ends instead.

Authorization

ApiKeyAuth

x-api-key<token>

In: header

Request Body

application/json

TypeScript Definitions

Use the request body type in TypeScript.

Cancels an auction and returns the asset to the seller. Only possible while the auction has no bids — once a bid is placed the auction is binding and must be settled instead.

seller*string

Wallet that created the auction (base58). The asset is returned to it.

asset*string

Mint address of the artwork under auction (base58).

targetPriorityFeeLamports?integer

Total priority fee to target for this transaction, in lamports. The builder derives the compute-unit price from it and the transaction's compute budget. Omit to let mallow pick a fee from current network conditions.

Formatuint64

blockhash?string

Recent blockhash to stamp onto the transaction, base58. Omit to let mallow supply one — mallow's is cached for up to 10 seconds, so two identical requests inside that window compile the same transaction, with the same signature once signed. Supply your own to control the expiry window, or when otherwise-identical requests must produce distinct transactions. Rejected with a 400 if it is not valid base58; a blockhash the cluster has already aged out builds fine and fails at send time.

Response Body

`application/json`

curl -X POST "https://example.com/v2/tx/auctions/cancel" \  -H "Content-Type: application/json" \  -d '{    "seller": "string",    "asset": "string"  }'

{  "result": {    "tx": "string"  }}

Authorization

Request Body

Response Body

200application/json

400application/json

401application/json

429application/json

500application/json

`application/json`

`application/json`

`application/json`

`application/json`

`application/json`