> ## Documentation Index > Fetch the complete documentation index at: https://docs.payments.sardine.ai/llms.txt > Use this file to discover all available pages before exploring further. # Post Customer Information > Send User information to Sardine to store theie information and create a risk profile ## OpenAPI ````yaml /api_reference/onramp.yaml post /customers openapi: 3.0.3 info: version: '1.0' title: Crypto API description: Reference for Sardine Crypto API contact: email: support@sardine.io name: Sardine url: docs.sardine.io servers: - url: https://api.sandbox.sardine.ai/v1 description: Sandbox - url: https://api.sardine.ai/v1 description: Prod Server security: [] paths: /customers: post: tags: - User Onboarding summary: Post Customer Information description: >- Send User information to Sardine to store theie information and create a risk profile operationId: post-customers requestBody: content: application/json: schema: type: object properties: flow: type: string description: Merchant defined string that defines the flow the user is in minLength: 1 sessionKey: type: string description: uuid that identifies the given customer session format: uuid minLength: 1 customer: type: object properties: id: type: string description: >- User ID hash. Please use the same value as passed to device intelligence SDK format: uuid minLength: 1 taxId: type: string description: SSN or equivalent minLength: 1 firstName: type: string description: First name of customer minLength: 1 lastName: type: string description: Last name of customer minLength: 1 dateOfBirth: type: string description: Date of birth in YYYY-MM-DD format: date minLength: 1 address: type: object properties: street1: type: string description: Street name minLength: 1 city: type: string description: City name minLength: 1 regionCode: type: string description: 2 digit State or province code minLength: 1 postalCode: type: string description: Postal or Zip code minLength: 1 countryCode: type: string description: 2 digit Country code minLength: 1 required: - street1 - city - regionCode - postalCode - countryCode transaction: type: object properties: id: type: string description: ID to be associated with transaction format: uuid minLength: 1 createdAtMillis: type: number description: Time of transaction in UNIX time amount: type: number description: Transaction amount itemCategory: type: string description: >- Main item category in cart. e.g. crypto asset(ETH, BTC), gift card, alcohol, generic minLength: 1 actionType: type: string enum: - buy - sell - deposit - exchange - withdraw - refund - payment - topup - transfer description: >- Indicates the type of transaction. If you need other action types to be supported, please reach out to the Sardine team. minLength: 1 currencyCode: type: string description: 3-digit ISO 4217currency code minLength: 1 paymentMethod: type: object properties: type: minLength: 1 enum: - crypto bank: type: object properties: accountNumber: type: string description: Account number of banka account minLength: 1 routingNumber: type: string description: Routing number of bank account minLength: 1 accountType: type: string enum: - checking - savings - other description: Type of account minLength: 1 balance: type: number description: >- Last known bank balance in minor units like cents balanceCurrencyCode: type: string description: 3 digit currency code minLength: 1 required: - accountNumber - routingNumber - accountType - balance - balanceCurrencyCode required: - type - bank required: - id - createdAtMillis - amount - itemCategory - actionType - currencyCode - paymentMethod emailAddress: type: string description: Email address of customer format: email minLength: 1 isEmailVerified: type: boolean description: Set to true if email has been verified phone: type: string description: Phone number including country minLength: 1 isPhoneVerified: type: boolean description: >- Set to true if phone has been verified via a one time code createdAtMills: type: integer description: >- This is time the customer was onboarded/created in your system. Please pass it as Unix timestamp in milliseconds. e.g. 1622057169587 for Wed May 22021 19:26:09 personalInfo: type: array items: type: object properties: source: type: string enum: - id_verification - bank_verification - phone_verification description: >- Source of personal information obtained via external third-party (non-Sardine) for verification. Discuss with Sardine before using firstName: type: string description: First name middleName: type: string description: Middle name lastName: type: string description: Last name address: type: object properties: street1: type: string description: Street street2: type: string city: type: string regionCode: type: string postalCode: type: string countryCode: type: string company: type: string dateOfBirth: type: string required: - source required: - id - taxId - firstName - lastName - dateOfBirth - address - transaction - emailAddress - isEmailVerified - phone - isPhoneVerified required: - flow - sessionKey - customer x-examples: example-1: flow: string sessionKey: string personalInfo: - source: plaid firstName: string middleName: string lastName: string address: street1: string street2: string city: string regionCode: string postalCode: string countryCode: string company: string phone: string emailAddress: string isEmailVerified: true isPhoneVerified: true dateOfBirth: string identityObject: string customer: id: string taxId: string firstName: string lastName: string dateOfBirth: string address: street1: string city: string regionCode: string postalCode: string countryCode: string transaction: id: string createdAtMillis: 0 amount: 0 itemCategory: string actionType: string currencyCode: string paymentMethod: type: string bank: accountNumber: string routingNumber: string accountType: string balance: 0 balanceCurrencyCode: string isEmailVerified: true emailAddress: string phone: string isPhoneVerified: true responses: '200': description: OK content: application/json: schema: $ref: '#/components/schemas/Customer' security: - {} servers: - url: https://api.sandbox.sardine.ai/v1 description: Sandbox - url: https://api.sardine.ai/v1 description: Prod Server components: schemas: Customer: type: object title: Customer properties: sessionKey: type: string minLength: 1 level: type: string enum: - low - medium - high - very_high description: >- This is the ONLY field that a merchant needs to use to make decision on fraud. This field is set by our rules and the main rule is the rule using our "customer score" model. minLength: 1 status: type: string enum: - Success - Failure minLength: 1 customer: type: object properties: score: type: number description: >- ML Risk Score for the current customer session. The ML model used to predict the score is trained on velocity and aggregation features, phone, email, bank, tax, card, IP, location, device and behavior intelligence signals. The score can be used once feedback for historical transactions has been provided. level: type: string enum: - low - medium - high - very_high description: This field is based on the signals sent in the response. minLength: 1 signals: type: array description: >- See https://docs.sardine.ai/api/reference/operation/v1-customers/ minItems: 1 uniqueItems: true items: type: object properties: key: type: string minLength: 1 value: type: string minLength: 1 transaction: type: object properties: level: type: string enum: - low - medium - high description: transaction risk level minLength: 1 amlLevel: type: string enum: - low - medium - high description: aml risk level minLength: 1 indemnification: type: object properties: decision: type: string enum: - approved - conditionally_approved - rejected - unknown minLength: 1 instantLimit: type: number description: >- This is the withdrawal amount in cents that is immediately available to the end-user. The remaining hold amount should be kept on hold on your side until the time specified by holdTime parameter below. holdAmount: type: number description: >- This is the remaining amount in cents that is available after the hold time is over. The hold time + instantLimit is the total deposit amount. verificationCode: type: string minLength: 1 holdTime: type: string description: >- UNIX timestamp that represents time until you which should hold part of fund format: time x-examples: example-1: sessionKey: string level: string status: string customer: score: 0 level: string signals: - key: string value: string transaction: level: string amlLevel: string indemnification: decision: string instantLimit: 0 holdAmount: 0 verificationCode: string checkpoints: customer: customerPurchaseLevel: value: string ruleIds: - {} emailLevel: value: string ruleIds: - {} historicalLevel: value: string ruleIds: - {} riskLevel: value: string ruleIds: - {} ````