Metaplex Digital Asset Standard API

(a.k.a. Metaplex Read API)

Open-source specification for interacting with digital assets on Solana.

Overview

The state data of uncompressed NFTs is all stored in on-chain accounts. This is expensive at scale. Compressed NFTs save space by encoding the state data into an on-chain Merkle tree. The detailed account data is not stored on-chain, but in data stores managed by RPC providers. The Metaplex Digital Asset Standard (DAS) API represents a unified interface for interacting with digital assets on Solana, supporting both standard (Token Metadata) and compressed (Bubblegum) assets.

The API defines a set of methods that RPCs implement in order to provide asset data. In the majority of cases, the data is indexed using Metaplex Digital Asset RPC infrastructure.

Getting Started

The @metaplex-foundation/digital-asset-standard-api package can be use to interact with Metaplex DAS API:

1. First, if you are not already using Umi, follow these instructions to install the Umi framework.
2. Next, install this library using the package manager of your choice.

   npm install @metaplex-foundation/digital-asset-standard-api

3. Finally, register the library with your Umi instance.

   import { dasApi } from '@metaplex-foundation/digital-asset-standard-api';
   umi.use(dasApi());

Examples are provided here and you can learn more about this library's API by reading its generated TypeDoc documentation.

The plugin can be used with any RPC that supports the Metaplex DAS API specification – the following RPCs (in alphabetical order) support the specification:

• Helius
• Hello Moon
• QuickNode
• Shyft
• Triton

Note You might need to contact your RPC provider to "enable" the DAS API on your endpoint.

Methods

💡 You can test each method of the API using the OpenRPC playground.

Name	Description	Example
getAsset	Return the metadata information of a compressed/standard asset	➡
getAssetProof	Return the merkle tree proof information for a compressed asset	➡
getAssetsByOwner	Return the list of assets given an owner address	➡
getAssetsByAuthority	Return the list of assets given an authority address	➡
getAssetsByCreator	Return the list of assets given a creator address	➡
getAssetsByGroup	Return the list of assets given a group (key, value) pair	➡
searchAssets	Return the list of assets given a search criteria	➡

Examples

⚠️ You should replace the <ENDPOINT> with the RPC endpoint to use.

📌 getAsset

parameters

Name	Required	Description
id	✅	The id of the asset.

typescript

import { publicKey } from '@metaplex-foundation/umi';
import { createUmi } from '@metaplex-foundation/umi-bundle-defaults';
import { dasApi } from '@metaplex-foundation/digital-asset-standard-api';

const umi = createUmi('<ENDPOINT>').use(dasApi());
const assetId = publicKey('8TrvJBRa6Pzb9BDadqroHhWTHxaxK8Ws8r91oZ2jxaVV');

const asset = await umi.rpc.getAsset(assetId);
console.log(asset);

curl

curl --request POST --url "<ENDPOINT>" --header 'Content-Type: application/json' --data '{
    "jsonrpc": "2.0",
    "method": "getAsset",
    "params": [
      "8vw7tdLGE3FBjaetsJrZAarwsbc8UESsegiLyvWXxs5A"
    ],
    "id": 0
}'

📌 getAssetProof

parameters

Name	Required	Description
id	✅	The id of the asset.

typescript

import { publicKey } from '@metaplex-foundation/umi';
import { createUmi } from '@metaplex-foundation/umi-bundle-defaults';
import { dasApi } from '@metaplex-foundation/digital-asset-standard-api';

const umi = createUmi('<ENDPOINT>').use(dasApi());
const assetId = publicKey('Ez6ezCMkRaUkWS5v6WVcP7uuCWiKadr3W2dHFkoZmteW');

const proof = await umi.rpc.getAssetProof(assetId);
console.log(proof);

curl

curl --request POST --url "<ENDPOINT>" --header 'Content-Type: application/json' --data '{
    "jsonrpc": "2.0",
    "method": "getAssetProof",
    "params": [
      "Ez6ezCMkRaUkWS5v6WVcP7uuCWiKadr3W2dHFkoZmteW"
    ],
    "id": 0
}'

📌 getAssetsByAuthority

parameters

Name	Required	Description
authorityAddress	✅	The address of the authority of the assets.
sortBy		Sorting criteria. This is specified as an object { sortBy: <value>, sortDirection: <vlaue> }, where sortBy is one of ["created", "updated", "recentAction", "none"] and sortDirection is one of ["asc", "desc"]
limit		The maximum number of assets to retrieve.
page		The index of the "page" to retrieve.
before		Retrieve assets before the specified ID.
after		Retrieve assets after the specified ID.

typescript

import { publicKey } from '@metaplex-foundation/umi';
import { createUmi } from '@metaplex-foundation/umi-bundle-defaults';
import { dasApi } from '@metaplex-foundation/digital-asset-standard-api';

const umi = createUmi('<ENDPOINT>').use(dasApi());
const authority = publicKey('mRdta4rc2RtsxEUDYuvKLamMZAdW6qHcwuq866Skxxv');

const assets = await umi.rpc.getAssetsByAuthority({ authority });
console.log(assets.items.length > 0);

curl

curl --request POST --url "<ENDPOINT>" --header 'Content-Type: application/json' --data '{
    "jsonrpc": "2.0",
    "method": "getAssetsByAuthority",
    "params": {
        "authorityAddress": "mRdta4rc2RtsxEUDYuvKLamMZAdW6qHcwuq866Skxxv",
        "page": 1
    },
    "id": 0
}'

📌 getAssetsByCreator

parameters

Name	Required	Description
creatorAddress	✅	The address of the creator of the assets.
onlyVerified		Indicates whether to retrieve only verified assets or not.
sortBy		Sorting criteria. This is specified as an object { sortBy: <value>, sortDirection: <vlaue> }, where sortBy is one of ["created", "updated", "recentAction", "none"] and sortDirection is one of ["asc", "desc"]
limit		The maximum number of assets to retrieve.
page		The index of the "page" to retrieve.
before		Retrieve assets before the specified ID.
after		Retrieve assets after the specified ID.

typescript

import { publicKey } from '@metaplex-foundation/umi';
import { createUmi } from '@metaplex-foundation/umi-bundle-defaults';
import { dasApi } from '@metaplex-foundation/digital-asset-standard-api';

const umi = createUmi('<ENDPOINT>').use(dasApi());
const creator = publicKey('D3XrkNZz6wx6cofot7Zohsf2KSsu2ArngNk8VqU9cTY3');

const assets = await umi.rpc.getAssetsByCreator({
    creator,
    onlyVerified: false,
    limit: 10,
});
console.log(assets.items.length > 0);

curl

curl --request POST --url "<ENDPOINT>" --header 'Content-Type: application/json' --data '{
    "jsonrpc": "2.0",
    "method": "getAssetsByCreator",
    "params": {
        "creatorAddress": "D3XrkNZz6wx6cofot7Zohsf2KSsu2ArngNk8VqU9cTY3",
        "onlyVerified": false,
        "limit": 10,
        "page": 1
    },
    "id": 0
}'

📌 getAssetsByGroup

parameters

Name	Required	Description
groupKey	✅	The key of the group (e.g., "collection").
groupValue	✅	The value of the group.
sortBy		Sorting criteria. This is specified as an object { sortBy: <value>, sortDirection: <vlaue> }, where sortBy is one of ["created", "updated", "recentAction", "none"] and sortDirection is one of ["asc", "desc"]
limit		The maximum number of assets to retrieve.
page		The index of the "page" to retrieve.
before		Retrieve assets before the specified ID.
after		Retrieve assets after the specified ID.

typescript

import { publicKey } from '@metaplex-foundation/umi';
import { createUmi } from '@metaplex-foundation/umi-bundle-defaults';
import { dasApi } from '@metaplex-foundation/digital-asset-standard-api';

const umi = createUmi('<ENDPOINT>').use(dasApi());

const assets = await umi.rpc.getAssetsByGroup({
    groupKey: 'collection',
    groupValue: 'J2ZfLdQsaZ3GCmbucJef3cPnPwGcgjDW1SSYtMdq3L9p',
});
console.log(assets.items.length > 0);

curl

curl --request POST --url "<ENDPOINT>" --header 'Content-Type: application/json' --data '{
    "jsonrpc": "2.0",
    "method": "getAssetsByGroup",
    "params": {
        "groupKey": "collection",
        "groupValue": "J2ZfLdQsaZ3GCmbucJef3cPnPwGcgjDW1SSYtMdq3L9p",
        "page": 1
    },
    "id": 0
}'

📌 getAssetsByOwner

parameters

Name	Required	Description
ownerAddress	✅	The address of the owner of the assets.
sortBy		Sorting criteria. This is specified as an object { sortBy: <value>, sortDirection: <vlaue> }, where sortBy is one of ["created", "updated", "recentAction", "none"] and sortDirection is one of ["asc", "desc"]
limit		The maximum number of assets to retrieve.
page		The index of the "page" to retrieve.
before		Retrieve assets before the specified ID.
after		Retrieve assets after the specified ID.

typescript

import { publicKey } from '@metaplex-foundation/umi';
import { createUmi } from '@metaplex-foundation/umi-bundle-defaults';
import { dasApi } from '@metaplex-foundation/digital-asset-standard-api';

const umi = createUmi('<ENDPOINT>').use(dasApi());
const owner = publicKey('N4f6zftYsuu4yT7icsjLwh4i6pB1zvvKbseHj2NmSQw');

const assets = await umi.rpc.getAssetsByOwner({
    owner,
    limit: 10
});
console.log(assets.items.length > 0);

curl

curl --request POST --url "<ENDPOINT>" --header 'Content-Type: application/json' --data '{
    "jsonrpc": "2.0",
    "method": "getAssetsByOwner",
    "params": {
        "ownerAddress": "N4f6zftYsuu4yT7icsjLwh4i6pB1zvvKbseHj2NmSQw",
        "limit": 10,
        "page": 1
    },
    "id": 0
}'

📌 searchAssets

parameters

Name	Required	Description
negate		Indicates whether the search criteria should be inverted or not.
conditionType		Indicates whether to retrieve all ("all") or any ("any") asset that matches the search criteria.
interface		The interface value (one of ["V1_NFT", "V1_PRINT" "LEGACY_NFT", "V2_NFT", "FungibleAsset", "Custom", "Identity", "Executable"]).
ownerAddress		The address of the owner.
ownerType		Type of ownership ["single", "token"].
creatorAddress		The address of the creator.
creatorVerified		Indicates whether the creator must be verified or not.
authorityAddress		The address of the authority.
grouping		The grouping ["key", "value"] pair.
delegateAddress		The address of the delegate.
frozen		Indicates whether the asset is frozen or not.
supply		The supply of the asset.
supplyMint		The address of the supply mint.
compressed		Indicates whether the asset is compressed or not.
compressible		Indicates whether the asset is compressible or not.
royaltyTargetType		Type of royalty ["creators", "fanout", "single"].
royaltyTarget		The target address for royalties.
royaltyAmount		The royalties amount.
burnt		Indicates whether the asset is burnt or not.
sortBy		Sorting criteria. This is specified as an object { sortBy: <value>, sortDirection: <vlaue> }, where sortBy is one of ["created", "updated", "recentAction", "none"] and sortDirection is one of ["asc", "desc"].
limit		The maximum number of assets to retrieve.
page		The index of the "page" to retrieve.
before		Retrieve assets before the specified ID.
after		Retrieve assets after the specified ID.
jsonUri		The value for the JSON URI.

typescript

import { publicKey } from '@metaplex-foundation/umi';
import { createUmi } from '@metaplex-foundation/umi-bundle-defaults';
import { dasApi } from '@metaplex-foundation/digital-asset-standard-api';

const umi = createUmi('<ENDPOINT>').use(dasApi());

const assets = await umi.rpc.searchAssets({
    owner: publicKey('N4f6zftYsuu4yT7icsjLwh4i6pB1zvvKbseHj2NmSQw'),
    jsonUri: 'https://arweave.net/c9aGs5fOk7gD4wWnSvmzeqgtfxAGRgtI1jYzvl8-IVs/chiaki-violet-azure-common.json',
});
console.log(assets.items.length == 1);

curl

curl --request POST --url "<ENDPOINT>" --header 'Content-Type: application/json' --data '{
    "jsonrpc": "2.0",
    "method": "searchAssets",
    "params": {
        "ownerAddress": "N4f6zftYsuu4yT7icsjLwh4i6pB1zvvKbseHj2NmSQw",
        "jsonUri": "https://arweave.net/c9aGs5fOk7gD4wWnSvmzeqgtfxAGRgtI1jYzvl8-IVs/chiaki-violet-azure-common.json",
        "page": 1
    },
    "id": 0
}'

Testing Endpoints

The tests included in this repository can be run locally to test different endpoints. From the clients/js folder, follow the steps below to setup the environment to run the tests:

1. Make a copy of file .env.example and name it .env.
2. Edit the .env file and include a line specifying your endpoint:

   DAS_API_MYENDPOINT="<URL>"

   where MYENDPOINT is the name of your endpoint (this can be any name) and <URL> is the URL of your endpoint.
3. Ensure you have pnpm installed and run the following command to install the dependencies:

   pnpm install

4. Build and run the tests:

   pnpm build && pnpm test