Crossmint API

Name: Crossmint API
Brand: Crossmint API
Availability: InStock

★ Only Publicly Available OpenAPI DocumentPaymentsPayment ProcessingapiKey81 EndpointsREST

For Agents

Create wallets, mint NFTs/SFTs, run on-chain transactions, and process crypto-or-card orders on Crossmint across multiple blockchains.

Install Jentic One Beta

Connect the Crossmint API to your agent

Jentic One is a self-hosted execution layer for AI agents. It lets your agent call the Crossmint API, or any other public or private API you need. You set the rules, the agent never sees your credentials, and every call is logged.

Two steps, two machines. Install the instance in a safe environment, then register your agent from wherever it runs.

Step 1: Jentic One Host machine

# On the machine that will host your Jentic One instance:
curl -fsSL https://raw.githubusercontent.com/jentic/jentic-one/main/tools/install.sh | sh

Step 2: Agent machine

# On the machine where your agent runs (keep this separate from the instance):
curl -fsSL https://raw.githubusercontent.com/jentic/jentic-one/main/tools/install.sh | sh
jentic register       # connects your agent to your Jentic One instance

Jentic One is in public beta. The setup above keeps your agent separate from the instance, which is what you want before using real credentials: an agent running as the same OS user as Jentic One can read its stored keys directly. Just evaluating? A single local install is fine to start. See the secure deployment guide for the tiers.

Capabilities

What an agent can do with Crossmint API.

Create and fund smart wallets across supported chains via /2025-06-09/wallets endpoints

Mint NFTs and SFTs into a collection, with optional template-based mint flows

Run on-chain transactions and signatures with explicit approval workflows

GET STARTED

Start building with Crossmint API

Explore with Jentic

View OpenAPI Document

Use Cases

Patterns agents use Crossmint API for, with concrete tasks.

★ Card-to-NFT Checkout

Sell NFTs to mainstream users who pay with a credit card by creating an order via POST /2022-06-09/orders, processing payment via POST /2022-06-09/orders/{orderId}/payment, and minting on completion. Crossmint handles the fiat-to-crypto bridge and the wallet-on-the-fly creation, so the buyer doesn't need a wallet of their own. Integration is typically a single page plus a backend payment confirm.

Create a Crossmint order for an NFT priced at $30 USD, process the card payment, and confirm the mint succeeded

Smart Wallet Creation and Funding

Provision a non-custodial smart wallet for each user with POST /2025-06-09/wallets and fund it via POST /2025-06-09/wallets/{walletLocator}/balances. Apps use this to onboard users without requiring them to install MetaMask, then attach delegated signers so app-side automation can co-sign transactions. The wallet locator abstracts away the underlying chain and address format.

Create a Crossmint smart wallet for user.email@example.com on Polygon and fund it with 5 USDC

NFT Drop Pipeline

Run a structured NFT drop by creating a collection with POST /2022-06-09/collections, defining mint templates, and minting per-recipient via POST /2022-06-09/collections/{collectionId}/nfts. Teams use idempotent PUT mint endpoints to retry safely when network issues happen, and PATCH/DELETE to fix metadata mistakes or burn errors. The /actions/{actionId} status endpoint lets the pipeline poll for on-chain confirmation.

Create a collection on Polygon, define a template, and mint 100 NFTs to a list of recipient wallets, polling /actions/{actionId} until each succeeds

AI Agent On-Chain Action Approval

An AI agent operating on a user's behalf creates and approves transactions on a Crossmint smart wallet through Jentic. The agent searches for the crossmint_create_transaction operation, executes against the user's vaulted X-API-KEY, then calls the approvals endpoint when policy permits. Jentic isolates the API key so the agent only ever sees a scoped capability, not the raw secret.

Use the Jentic SDK to create a Crossmint transaction sending 10 USDC and submit the approval, returning the resulting transaction ID

Key Endpoints

81 endpoints — jentic publishes the only available openapi specification for crossmint api, keeping it validated and agent-ready.

METHOD

PATH

DESCRIPTION

POST

/2025-06-09/wallets

Create a smart wallet

POST

/2025-06-09/wallets/{walletLocator}/transactions

Create a wallet transaction

POST

/2022-06-09/collections

Create a collection

POST

/2022-06-09/collections/{collectionId}/nfts

Mint an NFT into a collection

POST

/2022-06-09/orders

Create an order

POST

/2022-06-09/orders/{orderId}/payment

Process payment for an order

GET

/2022-06-09/actions/{actionId}

Get action status

GET

/2025-06-09/wallets/{walletLocator}/balances

Get wallet balance

POST

/2025-06-09/wallets

Create a smart wallet

POST

/2025-06-09/wallets/{walletLocator}/transactions

Create a wallet transaction

POST

/2022-06-09/collections

Create a collection

POST

/2022-06-09/collections/{collectionId}/nfts

Mint an NFT into a collection

POST

/2022-06-09/orders

Create an order

Why Jentic?

Three things that make agents converge on Jentic-routed access.

Credential isolation

Your Crossmint X-API-KEY is stored once, encrypted, by your own Jentic One instance and injected at execution time. It never enters the agent's prompt, logs, or context.

Intent-based discovery

Agents search Jentic by intent such as 'mint an NFT' or 'create a smart wallet', and Jentic returns the matching Crossmint operation with its input schema so the agent calls the right endpoint without browsing the reference docs.

Time to first call

FAQs

Specific to using Crossmint API through Jentic.

Why is there no official OpenAPI spec for Crossmint API?

Crossmint does not publish an OpenAPI specification. Jentic generates and maintains this spec so that AI agents and developers can call Crossmint API via structured tooling. It is validated against the live API and kept up to date. Get started with Jentic One, the self-hosted execution layer.

What authentication does the Crossmint API use?

The Crossmint API uses an API key supplied in the X-API-KEY header, generated from the Crossmint console with a server-side scope. Through Jentic the key is held encrypted in the vault and injected into the X-API-KEY header at request time so it never enters the agent's context.

Can I mint an NFT and accept a card payment in the same flow?

Yes. Create the order with POST /2022-06-09/orders (with the NFT product configuration), call POST /2022-06-09/orders/{orderId}/payment to charge the card, and Crossmint mints the NFT to the buyer's wallet on payment success. Poll GET /2022-06-09/actions/{actionId} for confirmation.

How do I create a smart wallet through Jentic?

Search Jentic for 'create a Crossmint wallet', load the schema for POST /2025-06-09/wallets, and execute with the user identifier and chain. Jentic handles the X-API-KEY injection.

How many endpoints does the Crossmint API expose?

The Crossmint API exposes 81 endpoints covering wallets, transactions, signatures, collections, NFT and SFT minting, templates, orders, payments, verifiable credentials, IP assets, and user management.

Can I retry a mint safely if my network drops?

Yes. Crossmint exposes idempotent PUT mint endpoints such as PUT /2022-06-09/collections/{collectionId}/nfts/{id}, so the same mint ID will not produce duplicate on-chain mints if you retry.

Can I limit what my agent is allowed to do with the Crossmint API?

Yes. Because you run Jentic One yourself, your own rules decide which Crossmint operations the agent may call and which stored X-API-KEY it uses, so a wallet transaction submission via POST /2025-06-09/wallets/{walletLocator}/transactions or an order payment via POST /2022-06-09/orders/{orderId}/payment is off limits unless you add it. Since Crossmint carries the wallet locator, collection id, and order id in the URL path, you can pin the agent to a single wallet or collection and let it only mint into that collection or poll GET /2022-06-09/actions/{actionId} for status. The API key stays with your own instance and is injected at request time, so the agent never sees the raw secret.

Crossmint API

Connect the Crossmint API to your agent

Capabilities

Start building with Crossmint API

Use Cases

Key Endpoints

Why Jentic?

Related APIs

FAQs