Crossmint API
65
AI ReadinessAI-Aware (B)65/100
Agent-ready OpenAPI document · curated by JenticPaymentsPayment ProcessingapiKey81 EndpointsREST
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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://jentic.com/install.sh?src=apis&api=%2Fapis%2Fcrossmint.com%2Fcrossmint" | sh2
Step 2: Agent machine
# On the machine where your agent runs (keep this separate from the instance):
curl -fsSL "https://jentic.com/install.sh?src=apis&api=%2Fapis%2Fcrossmint.com%2Fcrossmint" | 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
Jentic AI Readiness Score
This API is usable in Jentic One now. Its AI-readiness score against Jentic's framework shows where it stands today and where improvements would make it even easier for agents to use.
C
Crossmint API
- AI-Aware (B)65/100
74
Foundational Compliance63
Developer Experience & Jentic Compatibility52
AI-Readiness & Agent Experience89
Agent Usability50
Security100
AI DiscoverabilityPowered by JenticScoring Framework 1.0.0 | Scoring Engine 0.4.0
Show dimension breakdown
74
Foundational Compliance
Base layer of spec validity and structural soundness.
Grade: A-Signals: 4
96%
Lint Results
Aggregated quality score from linter diagnostics, weighted by severity.
100%
Resolution Completeness
Percentage of `$ref` references that resolve successfully.
100%
Specification Validity
Checks whether the API description parses successfully and conforms to its declared specification (e.g., OpenAPI).
0%
Structural Integrity
Structural correctness score based on schema issues using logarithmic dampening.
63
Developer Experience & Jentic Compatibility
Clarity, completeness, and ingestion readiness for developers and tooling.
Grade: B-Signals: 4
0%
Example Density
How richly the API is illustrated with examples.
100%
Example Validity
Percentage of examples that conform to their schemas.
50%
Response Coverage
Percentage of operations with complete response definitions (success, client error, server error).
100%
Tooling Readiness
Health of API ingestion, bundling, and resolution within Jentic pipelines.
52
AI-Readiness & Agent Experience
Semantic breadth, depth, and agent comprehension for AI systems.
Grade: C-Signals: 4
46%
Description Coverage
Coverage of descriptions across API elements.
0%
Error Standardization
Coverage of RFC 9457 Problem Details for error responses.
100%
OperationId Quality
Coverage, uniqueness, and casing consistency of operationIds for AI inference.
61%
Summary Coverage
Coverage of summaries across operations/tags/info.
89
Agent Usability
Functional utility, complexity comfort, and AI orchestration readiness.
Grade: ASignals: 1
89%
Complexity Comfort
Agent comfort level based on API operational and structural complexity.
50
Security
Trust, risk posture, and security compliance.
Grade: C-Signals: 1
50%
Authentication Strength
Average quality of security schemes based on authentication method strength (weakest link for OAuth2).
100
AI Discoverability
Findability, semantic richness, and reasoning readiness.
Grade: A+Signals: 1
100%
Descriptive Richness
Clarity and depth of descriptions across API elements.
Score it yourself
Every API in the directory is allowlisted, so you can re-score it with no key required.
npx @jentic/api-scorecard-cli score <openapi-url>Why Jentic?
What agents get from Jentic-routed access to this vendor.
Setup
Wiring Crossmint by hand means setting its X-API-KEY header auth, picking the production or staging host, and juggling two dated path prefixes (2022-06-09 and 2025-06-09) across wallets, collections, and orders. Through Jentic you install once, import Crossmint from the API Directory, store the API key once, and your agent calls it.
Permission scoping
Crossmint puts the wallet locator, collection id, and order id in the URL path (/2025-06-09/wallets/{walletLocator}/..., /2022-06-09/collections/{collectionId}/nfts), so a rule can pin your agent to one wallet or collection. You choose the operations it may call, so a wallet transaction submission or order payment is not included unless you add it.
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.
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 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.
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