Checkout.com Access API
Create an access token to begin using our APIs.
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OpenAPI Specification
openapi: 3.2.0
info:
title: Checkout.com API Reference Access API
description: '## Get started
Checkout.com provides a collection of APIs that enable you to integrate with our various products and services.
Our APIs accept and return JSON in the HTTP body, and return standard HTTP response codes. You can consume the APIs directly using any HTTP or REST library.
Sign up for a test account to gain access to the sandbox environment, where you can test API calls without affecting live data.
For more information, see:
- API endpoints
- API rate limits
- API changes
- Idempotency
- Private connections
## Base URLs
The base URLs you must use for your API calls to the sandbox and production environments are unique to you.
- `https://{prefix}.api.sandbox.checkout.com/{path}`
- `https://{prefix}.api.checkout.com/{path}`
- `https://{prefix}.access.sandbox.checkout.com/{path}`
- `https://{prefix}.access.checkout.com/{path}`
The unique API endpoint host names resolve to Checkout.com''s IP addresses. Do not allowlist these IP addresses.
The `{prefix}` value in each base URL is a string containing the first eight characters of each of your environments'' unique `client_id`, excluding the `cli_` prefix.
To find your unique base URL:
1. Sign in to the Dashboard environment you want to retrieve the base URL for:
- Sandbox
- Production
2. Go to _Developers_ > _Overview_.
Your unique base URL is displayed on the _Developer overview_ page. For example, `https://vkuhvk4v.api.checkout.com`.
3. Alternatively, go to _Settings_ > _Account details_.
Your unique base URL is displayed under _Connection settings_.
If you are unsure of your client ID or base URL for either environment, contact your account manager or request support.
For more information, see API endpoints.
## Authentication
When you sign up for an account, you can authenticate with either Access keys (OAuth 2.0), or Secret API keys.
Unless explicitly stated, all endpoints require authentication using either your Access or Secret API Keys. Public keys should only be used in JavaScript or native applications.
- **Client-side authentication**. Use your public key for client-side authentication. It only has access to a limited set of our APIs – mostly those called as part of your payment environment.
- **Server-to-server authentication**. Use your secret key or OAuth for server-to-server communication. Support for API keys depends on the endpoint.
Never share your OAuth credentials, API keys, or access tokens. Keep them guarded and secure.'
termsOfService: https://www.checkout.com/legal/terms-and-policies
contact:
name: Checkout.com Support
url: https://dashboard.checkout.com/support
version: v1.0.0
servers:
- url: https://{prefix}.api.sandbox.checkout.com
description: Sandbox environment
variables:
prefix:
default: '{prefix}'
description: Your unique <a href="https://www.checkout.com/docs/developer-resources/api/api-endpoints" target="_blank">base URL</a>. There is no default value.
- url: https://{prefix}.api.checkout.com
description: Production environment
variables:
prefix:
default: '{prefix}'
description: Your unique <a href="https://www.checkout.com/docs/developer-resources/api/api-endpoints" target="_blank">base URL</a>. There is no default value.
tags:
- name: Access
description: Create an access token to begin using our APIs.
paths:
/connect/token:
servers:
- url: https://{prefix}.access.checkout.com
description: Production environment
variables:
prefix:
default: '{prefix}'
description: Your unique <a href="https://www.checkout.com/docs/developer-resources/api/api-endpoints" target="_blank">base URL</a>. There is no default value.
- url: https://{prefix}.access.sandbox.checkout.com
description: Sandbox environment
variables:
prefix:
default: '{prefix}'
description: Your unique <a href="https://www.checkout.com/docs/developer-resources/api/api-endpoints" target="_blank">base URL</a>. There is no default value.
post:
tags:
- Access
summary: Request an access token
description: OAuth endpoint to exchange your access key ID and access key secret for an access token.
operationId: requestAnAccessToken
requestBody:
content:
application/x-www-form-urlencoded:
schema:
type: object
properties:
grant_type:
enum:
- client_credentials
type: string
example: client_credentials
client_id:
type: string
description: Access key ID
client_secret:
type: string
description: Access key secret
scope:
type: string
description: The access key scope
example: gateway
examples:
example-1:
value:
grant_type: client_credentials
client_id: ack_clckqmmnyfiupexjew7shh5ahe
client_secret: Pmg36sDWQ9WxtPR3
responses:
'200':
description: OK - A successful access token response as per [RFC6749](https://tools.ietf.org/html/rfc6749#section-4.4.3)
content:
application/json:
schema:
type: object
properties:
access_token:
type: string
example: 2YotnFZFEjr1zCsicMWpAA
token_type:
type: string
example: example
expires_in:
type: number
example: 3600
'400':
description: Bad request - An unsuccessful access token response as per [RFC6749](https://tools.ietf.org/html/rfc6749#section-4.4.3)
content:
application/json:
schema:
type: object
properties:
error:
enum:
- invalid_request
- invalid_client
- invalid_grant
- unauthorized_client
- unsupported_grant_type
- invalid_scope
type: string
x-code-samples:
- lang: C#
source: "// Please refer to https://github.com/checkout/checkout-sdk-net on how to setup the SDK with OAuth\ntry\n{\n ICheckoutApi api = CheckoutSdk.Builder().OAuth()\n .ClientCredentials(\"client_id\", \"client_secret\")\n .Scopes(OAuthScope.Vault) // more scopes available\n .Environment(Environment.Sandbox)\n .EnvironmentSubdomain(\"{prefix}\") // Your base URL's {prefix} value is unique to your account and environment. To learn how to retrieve your base URLs for the sandbox and production environments, see https://www.checkout.com/docs/developer-resources/api/api-endpoints.\n .HttpClientFactory(new DefaultHttpClientFactory())\n .Build();\n}\ncatch (CheckoutApiException e)\n{\n // API error\n string requestId = e.RequestId;\n var statusCode = e.HttpStatusCode;\n IDictionary<string, object> errorDetails = e.ErrorDetails;\n}\ncatch (CheckoutArgumentException e)\n{\n // Bad arguments\n}\ncatch (CheckoutAuthorizationException e)\n{\n // Invalid authorization\n}"
- lang: cURL
source: "curl --location 'https://{prefix}.access.checkout.com/connect/token'\n --header 'Content-Type: application/x-www-form-urlencoded'\n --data-urlencode 'grant_type=client_credentials'\n --data-urlencode 'client_id=ack_...' \n --data-urlencode 'client_secret=...'"
- lang: Go
source: "// For more information please refer to https://github.com/checkout/checkout-sdk-go\nimport (\n\t\"github.com/checkout/checkout-sdk-go\"\n\t\"github.com/checkout/checkout-sdk-go/configuration\"\n)\n\n// SDK instantiation for OAuth\napi, err := checkout.\n\t\t\tBuilder().\n\t\t\tOAuth().\n\t\t\tWithClientCredentials(\"client_id\", \"client_secret\").\n\t\t\tWithScopes([]string{configuration.Files, configuration.Flow, configuration.Fx, configuration.Gateway,\n\t\t\t\tconfiguration.Marketplace, configuration.SessionsApp, configuration.SessionsBrowser,\n\t\t\t\tconfiguration.Vault, configuration.PayoutsBankDetails, configuration.Disputes}). // more scopes available\n\t\t\tWithEnvironment(configuration.Sandbox()). // or Environment.PRODUCTION\n WithEnvironmentSubdomain(\"{prefix}\"). // Your base URL's {prefix} value is unique to your account and environment. To learn how to retrieve your base URLs for the sandbox and production environments, see https://www.checkout.com/docs/developer-resources/api/api-endpoints.\n\t\t\tBuild()\nif err != nil {\n\treturn nil, err\n}"
- lang: Java
source: "// Please refer to https://github.com/checkout/checkout-sdk-java\nimport com.checkout.CheckoutApi;\nimport com.checkout.CheckoutSdk;\nimport com.checkout.Environment;\nimport com.checkout.OAuthScope;\n\n// SDK instantiation for OAuth\nCheckoutApi api = CheckoutSdk.builder()\n .oAuth()\n .clientCredentials(\"client_id\", \"client_secret\")\n .scopes(OAuthScope.FILES, OAuthScope.FLOW, OAuthScope.FX, OAuthScope.GATEWAY,\n OAuthScope.MARKETPLACE, OAuthScope.SESSIONS_APP, OAuthScope.SESSIONS_BROWSER,\n OAuthScope.VAULT, OAuthScope.PAYOUTS_BANK_DETAILS) // more scopes available\n .environment(Environment.SANDBOX) // or Environment.PRODUCTION\n .environmentSubdomain(\"{prefix}\") // Your base URL's {prefix} value is unique to your account and environment. To learn how to retrieve your base URLs for the sandbox and production environments, see https://www.checkout.com/docs/developer-resources/api/api-endpoints.\n .build();"
- lang: Node
source: "import { Checkout } from 'checkout-sdk-node';\n\nconst cko = new Checkout();\n\ntry {\n\tconst access_token = await cko.access.request({\n\t\tgrant_type: 'client_credentials',\n\t\tclient_id: 'ack_XXXX',\n\t\tclient_secret: 'XXXXX',\n\t\tscope: 'gateway',\n\t});\n} catch (err) {\n\tconsole.log(err.name);\n}"
- lang: PHP
source: "<?php\n//For more information please refer to https://github.com/checkout/checkout-sdk-php\n\nuse Checkout\\CheckoutSdk;\nuse Checkout\\Environment;\nuse Checkout\\OAuthScope;\n\n$api = CheckoutSdk::builder()->oAuth()\n ->clientCredentials(\"client_id\", \"client_secret\")\n ->scopes([OAuthScope::$Balances])\n ->environment(Environment::sandbox())\n ->environmentSubdomain(\"{prefix}\") // Your base URL's {prefix} value is unique to your account and environment. To learn how to retrieve your base URLs for the sandbox and production environments, see https://www.checkout.com/docs/developer-resources/api/api-endpoints.\n ->build();"
- lang: Python
source: "# please refer to https://github.com/checkout/checkout-sdk-python\nimport checkout_sdk\nfrom checkout_sdk.checkout_sdk import CheckoutSdk\nfrom checkout_sdk.oauth_scopes import OAuthScopes\n\n# SDK instantiation for OAuth\napi = CheckoutSdk.builder() \\\n .oauth() \\\n .client_credentials('client_id', 'client_secret') \\\n .scopes([OAuthScopes.GATEWAY, OAuthScopes.VAULT, OAuthScopes.PAYOUTS_BANK_DETAILS,\n OAuthScopes.SESSIONS_APP, OAuthScopes.SESSIONS_BROWSER, OAuthScopes.FX, OAuthScopes.MARKETPLACE,\n OAuthScopes.FILES, OAuthScopes.TRANSFERS, OAuthScopes.BALANCES_VIEW]) \\\n .build()"
components:
securitySchemes:
ApiPublicKey:
type: apiKey
description: "Public keys are for client-side authentication and supported only in JavaScript or native applications.\n \n#### Format\n\n- Sandbox – `pk_sbox_xxxxxxxxxxxxxxxxxxxxxxxxxx`\n\n- Production – `pk_xxxxxxxxxxxxxxxxxxxxxxxxxx`\n\nWhen specifying your public key, use the format `Bearer {{PublicApiKey}}`.\n"
name: Authorization
in: header
x-cko-type: publicKey
ApiSecretKey:
type: apiKey
description: 'You can pass your secret API key in the `Authorization` header of your requests for supported endpoints.
#### Format
- Sandbox – `sk_sbox_xxxxxxxxxxxxxxxxxxxxxxxxxx`
- Production – `sk_xxxxxxxxxxxxxxxxxxxxxxxxxx`
When specifying your secret key, use the format `Bearer {{SecretApiKey}}`.
```
curl --location --request POST ''https://{prefix}.api.checkout.com/{{path}}'' \
--header ''Content-Type: application/json'' \
--header ''Accept: application/json'' \
--header ''Authorization: Bearer {{SecretApiKey}}'' \
--data-raw ''{
"amount": 10000,
"currency": "USD",
"reference": "Visa-USD-Test",
...
}''
```
'
name: Authorization
in: header
x-cko-type: secretKey
OAuth:
type: oauth2
description: "Your OAuth credentials include an access key ID and an access key secret. They correspond to an OAuth 2.0 client ID and a client secret respectively. \n\nTo exchange these credentials for an access token, call the [Request an access token](/tag/access/POST/connect/token) endpoint. Authenticate using basic authentication, with your access key ID as the username and your access key secret as the password.\n\n| Environment | Authorization server |\n|---------------|------------------------------------------------------|\n| Sandbox | https://{prefix}.access.sandbox.checkout.com/connect/token |\n| Production | https://{prefix}.access.checkout.com/connect/token |\n\n```\ncurl --location 'https://{prefix}.access.checkout.com/connect/token' \\\n--header 'Content-Type: application/x-www-form-urlencoded' \\\n--data-urlencode 'grant_type=client_credentials' \\\n--data-urlencode 'client_id=ack_...' \\\n--data-urlencode 'client_secret=...' \n```\n\nThe token server returns a Bearer `access_token` in JSON Web Token (JWT) format. Use this token in the `Authorization` header of your API requests.\n\n```\ncurl --location --request POST 'https://{prefix}.api.checkout.com/{{path}}' \\\n--header 'Content-Type: application/json' \\\n--header 'Accept: application/json' \\\n--header 'Authorization: Bearer {{AccessToken}}' \\\n--data-raw '{\n \"amount\": 10000,\n \"currency\": \"USD\",\n \"reference\": \"Visa-USD-Test\",\n ...\n}'\n```\n\nThe `expires_in` field in the response indicates the validity period of your access token in seconds. When your token expires, you must request a new one.\n\nDepending on the Environment against which you're making your requests against you'll need to request the token from a different Authorization Server.\n\n| Environment | Authorization Server |\n|---------------|------------------------------------------------------|\n| Sandbox | https://{prefix}.access.sandbox.checkout.com/connect/token |\n| Production | https://{prefix}.access.checkout.com/connect/token |\n\nYour base URL `{prefix}` is unique. To learn how to retrieve your unique base URLs for the sandbox and production environments, see [API endpoints](https://www.checkout.com/docs/developer-resources/api/api-endpoints).\n"
flows:
clientCredentials:
tokenUrl: string
scopes:
vault: Access to all Vault resources
vault:apme-enrollment: Manage Apple Pay Domain Enrollment
vault:customers: Manage customers
vault:card-metadata: Read card metadata
vault:instruments: Create instruments
vault:network-tokens: Manage network tokens
vault:tokenization: Tokenize payment instruments
vault:real-time-account-updater: Access to real-time account updater
gateway: Access to all Gateway resources
gateway:payment: Request payments
gateway:payment-details: Get payment details
gateway:payment-authorizations: Increment authorizations
gateway:payment-voids: Void payments
gateway:payment-captures: Capture payments
gateway:payment-contexts: Manage payment contexts
gateway:payment-cancellations: Manage payment cancellations
gateway:payment-refunds: Refund payments
fx: Foreign exchange services
payouts:bank-details: Get bank details
sessions:app: App-based authentication
sessions:browser: Browser-based authentication
disputes: Access to all Disputes resources
disputes:view: View disputes
disputes:provide-evidence: Provide dispute evidence
disputes:accept: Accept disputes
disputes:scheme-files: Read dispute scheme files
accounts: Manage sub-entities
flow: Access to all Flow resources
flow:workflows: Manage workflows
flow:events: Retrieve events
flow:reflow: Manage workflows
files: Access to all Files resources
files:retrieve: Retrieve files
files:upload: Upload files
files:download: Download files
forward: Access to Forward api
forward:secrets: Manage secrets in Forward api
balances: Access to all Balances resources
balances:view: View balances
balances:top-up-instructions: Get top-up instructions
transfers: Access to all Transfers resources
transfers:view: View transfers
transfers:create: Create transfers
middleware: Access to all Middleware resources
middleware:merchants-secret: Allows merchant identity and Middleware token exchange from a secure execution environment
middleware:merchants-public: Allows merchant identity and Middleware token exchange from an insecure execution environment
payment-sessions: Access to all Payment Sessions resources
payments:search: Search payments
reports: Access to all Reports resources
reports:view: View reports
financial-actions: Access to all Financial actions resources
financial-actions:view: View financial actions
card-management: Access to all Card management resources
issuing:card-management-read: Gives access to card management endpoints with GET operations
issuing:card-management-write: Gives access to card management endpoints with POST/ PUT / DELETE operations
issuing:controls-read: Gives access to card control endpoints with GET operations
issuing:controls-write: Gives access to card control endpoints with POST/ PUT / DELETE operations
transactions: Access to all transactions resources
issuing:transactions-read: Gives access to get and search transactions
issuing:transactions-write: Gives access to simulate transactions for testing purposes
issuing-disputes: Access to Issuing disputes resources
issuing:disputes-read: Gives access to get disputes
issuing:disputes-write: Gives access to create and submit Issuing disputes
identity-verification: Access to all Identities endpoints
Payment Context: Read payment context
agentic:inventory: Manage agentic commerce inventory and reservations
SessionSecret:
type: apiKey
description: 'A base64 encoded value prefixed with `sek_` that gives access to client-side operations for a single authentication within the Sessions API. This value is returned as the `session_secret` when requesting a session.
'
name: Authorization
in: header
x-tagGroups:
- name: Set up
tags:
- Access
- name: Handle payments and payouts
tags:
- Payments
- Flow
- Payment Setups
- Payment Links
- Hosted Payments Page
- Forex
- Apple Pay
- Bacs Direct Debit
- Google Pay
- Transfers
- Balances
- name: Payment Context
tags:
- Payment Context
- name: Payment Methods
tags:
- Payment Methods
- name: Store and forward payment credentials
tags:
- Tokens
- Instruments
- Customers
- Forward
- name: Authentication
tags:
- Standalone
- name: Risk management
tags:
- Disputes
- name: Notifications
tags:
- Workflows
- name: Platforms
tags:
- Platforms
- Business details
- Payment instruments
- Payout schedules
- Reserve rules
- Onboarding Simulator
- name: Card issuing
tags:
- Cardholders
- Cards
- Controls
- Control profiles
- Control groups
- Cardholder access tokens
- Transactions
- Issuing disputes
- Card testing
- name: Identities
tags:
- Applicants
- Identity Verification
- AML Screening
- Face Authentication
- ID Document Verification
- Address Document Verification
- name: Reporting
tags:
- Reports
- Financial actions
- name: Metadata
tags:
- Card metadata
- name: Network Tokens
tags:
- Network Tokens
- name: Standalone Account Updater
tags:
- Standalone Account Updater
- name: Compliance requests
tags:
- Compliance requests
- name: Agentic Commerce
tags:
- Agentic Commerce Protocol
- Inventory