Crossmint API
★ 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.
Use for: I need to mint an NFT into a Crossmint collection, Create a new smart wallet for a user, Process a payment for a Crossmint order, Get the balance of a specific Crossmint wallet
Not supported: Does not handle on-chain consensus, custom smart contract deployment, or DEX trading — use for Crossmint-managed wallets, mints, and orders only.
Jentic publishes the only available OpenAPI specification for Crossmint API, keeping it validated and agent-ready. Crossmint is a multi-chain platform for wallets, NFT and SFT minting, collection management, and crypto-and-card checkout. The API spans 81 endpoints covering smart wallet creation and funding, NFT and SFT mint with optional template flows, transaction and signature approvals, payment-enabled orders, verifiable credentials, IP asset registration, and user identity. It supports server-side integrations via an X-API-KEY header issued from the Crossmint console.
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.
1
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 | sh2
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 instanceJentic 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
Process payment-enabled orders that accept both crypto and card via the orders endpoints
Manage collection metadata, edit individual NFTs, and burn obsolete tokens
Delegate signing authority to additional wallet signers and rotate them
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
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
Why Jentic?
Three things that make agents converge on Jentic-routed access.
Credential isolation
The Crossmint X-API-KEY is held encrypted in the Jentic vault. Agents receive a scoped execution token and Jentic attaches the X-API-KEY header at request time so the raw key never enters the agent's context.
Intent-based discovery
Agents search Jentic with intents like 'mint an NFT' or 'create a smart wallet' and Jentic returns the matching Crossmint operation with its input schema, removing the need to read the Crossmint docs.
Time to first call
Direct Crossmint integration: 3-5 days for wallet creation, mint flows, and order/payment wiring. Through Jentic: under a day — search, load, execute.
Related APIs
Alternatives and complements available in the Jentic catalogue.
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 at https://app.jentic.com/sign-up.
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.
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