Mint

Builds a Metaplex Core mint, signed and paid for by authority. asset is the new asset's address: generate a fresh keypair for it and sign with it too.

kind selects what is minted:

core_asset: a 1/1, optionally in collection.
core_master_edition_collection: a master edition that buyers print copies from. Omit maxSupply for an open edition.
core_collection: a collection that other assets can join.

The returned transaction may already carry a mallow signature. Sign and send it exactly as returned.

Authorization

ApiKeyAuth

x-api-key<token>

In: header

Request Body

application/json

TypeScript Definitions

Use the request body type in TypeScript.

kind*"core_asset"

Mint a 1/1 asset.

Value in

"core_asset"

collection?

Reference to the collection an asset belongs to. tokenStandard tells the builder which program owns the collection account.

authority*string

Wallet minting the asset (base58). Signs and pays for the transaction.

asset*string

Address the new asset will occupy (base58). Generate a fresh keypair for it — the transaction is built for this exact address and must also be signed by it.

uri*string

URI of the off-chain JSON metadata, written to the on-chain metadata account.

nftMetadata*

Metadata for a mint or edit. name, sellerFeeBasisPoints and creators are written on-chain; everything under extendedMetadata is stored off-chain by mallow.

targetPriorityFeeLamports?integer

Priority fee per transaction, in lamports. By default it is a cap: mallow pays what the network currently needs, up to this amount (50,000 when omitted). Set exactPriorityFee to pay exactly this amount instead. The fee is never less than 15,000 lamports.

Formatuint64

exactPriorityFee?boolean

Pay targetPriorityFeeLamports exactly instead of treating it as a cap. Defaults to false.

blockhash?string

Recent blockhash to build the transaction with (base58). Omit it to let mallow supply one; identical requests a few seconds apart then return the same transaction.

Response Body

`application/json`

curl -X POST "https://example.com/v2/tx/nft/mint" \  -H "Content-Type: application/json" \  -d '{    "authority": "string",    "asset": "string",    "uri": "string",    "nftMetadata": {      "name": "string",      "sellerFeeBasisPoints": 0    },    "kind": "core_asset"  }'

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

Authorization

Request Body

Response Body

200application/json

400application/json

401application/json

409application/json

429application/json

500application/json

`application/json`

`application/json`

`application/json`

`application/json`

`application/json`

`application/json`