A collection is a container of NFTs, used by applications like marketplaces and wallets to group NFTs together. Crossmint allows you to create managed collections via API or directly from the console. Crossmint has a library of pre-audited smart contracts which work for most major use cases. However, you can also bring your own contract if you already have one. Crossmint supports non-fungible and semi-fungible tokens (editions), free and paid mints, and builds on open ERC and Metaplex standards. On EVM chains, ERC-721 and ERC-1155 contracts are supported, while on Solana, Metaplex standard programs and compressed NFT programs are supported.
See the list of supported blockchains here

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1. Create and Deploy an NFT collection

The first time you mint an NFT on a specific blockchain, Crossmint will assign it, and any subsequent mints, to a default collection for that chain. You can create additional collections from the console or in a single API call (requires the API key scope collections.create):
cURL
curl --request POST \
     --url https://staging.crossmint.com/api/2022-06-09/collections/ \
     --header 'content-type: application/json' \
     --header 'x-api-key: <X_API_KEY>' \
     --data '
{
  "chain": "polygon",
  "metadata": {
    "name": "A new collection",
    "imageUrl": "https://www.crossmint.com/assets/crossmint/logo.png",
    "description": "A new collection with its own dedicated smart contract"
  }
}
'
The collection details you provide will be displayed to your customers on marketplaces and other interfaces.

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2. Check the status of your collection

It takes a few seconds (up to a minute, depending on the blockchain and how congested it is) to deploy a collection. You can use the following API to check collection status API to check what the status of a collection is. For example:
cURL
curl --request GET \
     --url https://staging.crossmint.com/api/2022-06-09/collections/default-solana \
     --header 'x-client-secret: <CLIENT_SECRET>' \
     --header 'x-project-id: <PROJECT_ID>'

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3. List all collections under your project

cURL
curl --request GET \
     --url https://staging.crossmint.com/api/2022-06-09/collections/ \
     --header 'x-client-secret: <CLIENT_SECRET>' \
     --header 'x-project-id: <PROJECT_ID>'

API Reference

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