Unit

Unit is a Banking-as-a-Service (BaaS) platform that lets companies embed deposit accounts, cards, payments, and lending into their own products without becoming a bank. A single REST API, built on the JSON:API specification (media type application/vnd.api+json) and secured with Bearer/JWT tokens, covers onboarding (Applications), Customers, Deposit and Credit Accounts, Debit and Credit Cards, real-time card Authorizations, Payments (Book, ACH, Wire, Recurring, Cash Deposits), Counterparties, Checks, Transactions, Statements, Tax Forms, Fees, Rewards, Credit and Repayments, and Events delivered as signed HTTP webhooks. Unit publishes an official OpenAPI 3.0.2 specification (github.com/unit-finance/openapi-unit-sdk) plus generated Node.js, Python, Ruby, and Java SDKs. Sandbox runs at api.s.unit.sh; production access is provisioned per signed BaaS agreement with Unit's partner banks.

15 APIs 0 Features
FinTechBaaSBankingPaymentsCard IssuingACHLendingJSON:API

APIs

Unit Applications API

Individual and business application onboarding - create, get, update, list, and cancel applications; manage application forms, uploaded KYC/KYB documents (front/back, verify, do...

Unit Customers API

Manage individual and business Customer resources created from approved applications - get, update, list, and archive customers, and add or remove authorized users who can trans...

Unit Accounts API

Create, get, update, list, freeze/unfreeze, close, and reopen deposit and credit accounts; manage Deposit Account Control Agreements (enter/activate/deactivate DACA); retrieve a...

Unit Cards API

Issue and manage individual and business debit and credit cards - create, get, update, list, freeze/unfreeze, close, replace, and check PIN status; report a card lost or stolen;...

Unit Card Authorizations API

List and retrieve completed card Authorization resources, and handle real-time Authorization Requests - Unit calls a configured webhook for every attempt to use a card so you ca...

Unit Payments API

Move money with Book Payments (instant internal transfers), ACH (originating debit/credit) and Wire payments, one-time and Recurring Payments, and retail Cash Deposits (barcode-...

Unit Counterparties API

Create, get, update, list, and delete Counterparty resources - external bank accounts (often verified via a Plaid processor token) that can send or receive ACH payments - and ch...

Unit Checks API

Mobile Check Deposits - create, get, update, list, confirm, and retrieve front/back images of a deposited check - and outbound Check Payments (print-and-mail) - create, approve,...

Unit Transactions API

Read-only ledger of confirmed, posted financial movements on an account - list transactions with filtering and paging, get a single transaction by account and transaction id, an...

Unit Statements and Tax Forms API

Retrieve auto-generated monthly account statements as HTML or PDF, plus bank-verification PDFs, for deposit and credit accounts; list and retrieve annual Tax Forms and their PDF...

Unit Events and Webhooks API

List and retrieve Event resources (resource.event-named, e.g. application.created, account.frozen, card.authorization) going back up to 90 days, and manage Webhook subscriptions...

Unit Risk and Fraud Prevention API

Create, list, get, and disable ACH/check Stop Payments; list and retrieve card transaction Disputes; and, through the dashboard-driven white-label Card Fraud Outreach flow, noti...

Unit Credit and Repayments API

Manage repayments on Unit credit accounts and receivables - create, get, and list one-time Repayments; create, get, list, enable, and disable Recurring Repayments. Works alongsi...

Unit Fees and Rewards API

Create and reverse one-off Fees against a customer's account for activities not covered by Unit's native fee schedule, and create and list Rewards (cashback-style credits) paid ...

Unit API Tokens API

Issue and revoke org-level API tokens scoped to a Unit user, and create short-lived Customer API Tokens (plus SMS/email verification challenges) that let end users authenticate ...

Collections

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Resources

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DomainSecurity
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Authentication
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GitHubOrganization
GitHubOrganization
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LinkedIn
LinkedIn
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Website
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Documentation
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Plans
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RateLimits
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FinOps
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Blog
Blog

Sources

Raw ↑
opencollection: 1.0.0
info:
  name: Unit API
  version: '1.0'
request:
  auth:
    type: bearer
    token: '{{bearerToken}}'
items:
- info:
    name: Applications
    type: folder
  items:
  - info:
      name: Get List Application.
      type: http
    http:
      method: GET
      url: https://api.s.unit.sh/applications
    docs: Lists individual and business applications with filtering, sorting, and paging.
  - info:
      name: Create Application.
      type: http
    http:
      method: POST
      url: https://api.s.unit.sh/applications
      body:
        type: json
        data: "{\n  \"data\": {\n    \"type\": \"individualApplication\",\n    \"attributes\": {\n      \"ssn\": \"123456789\"\
          ,\n      \"fullName\": { \"first\": \"John\", \"last\": \"Kenn\" },\n      \"dateOfBirth\": \"1989-02-01\",\n  \
          \    \"address\": { \"street\": \"123 Main St\", \"city\": \"San Francisco\", \"state\": \"CA\", \"postalCode\"\
          : \"94205\", \"country\": \"US\" },\n      \"email\": \"jone.doe@unit-finance.com\",\n      \"phone\": { \"countryCode\"\
          : \"1\", \"number\": \"5555555555\" },\n      \"occupation\": \"ArchitectOrEngineer\",\n      \"annualIncome\":\
          \ \"UpTo10k\",\n      \"sourceOfIncome\": \"EmploymentOrPayrollIncome\"\n    }\n  }\n}"
    docs: Creates an individualApplication or businessApplication.
  - info:
      name: Get Application by Id.
      type: http
    http:
      method: GET
      url: https://api.s.unit.sh/applications/:applicationId
      params:
      - name: applicationId
        value: ''
        type: path
        description: The applicationId.
    docs: Retrieves an application by ID.
  - info:
      name: Cancel Application by Id.
      type: http
    http:
      method: POST
      url: https://api.s.unit.sh/applications/:applicationId/cancel
      params:
      - name: applicationId
        value: ''
        type: path
        description: The applicationId.
    docs: Cancels a pending application.
- info:
    name: Customers
    type: folder
  items:
  - info:
      name: Get Customers List.
      type: http
    http:
      method: GET
      url: https://api.s.unit.sh/customers
    docs: Lists customers.
  - info:
      name: Get Customer by Id.
      type: http
    http:
      method: GET
      url: https://api.s.unit.sh/customers/:customerId
      params:
      - name: customerId
        value: ''
        type: path
        description: The customerId.
    docs: Retrieves a customer by ID.
  - info:
      name: Archive Customer by Id.
      type: http
    http:
      method: POST
      url: https://api.s.unit.sh/customers/:customerId/archive
      params:
      - name: customerId
        value: ''
        type: path
        description: The customerId.
    docs: Archives a customer.
- info:
    name: Accounts
    type: folder
  items:
  - info:
      name: Get List Accounts.
      type: http
    http:
      method: GET
      url: https://api.s.unit.sh/accounts
    docs: Lists deposit and credit accounts.
  - info:
      name: Create Account.
      type: http
    http:
      method: POST
      url: https://api.s.unit.sh/accounts
      body:
        type: json
        data: "{\n  \"data\": {\n    \"type\": \"depositAccount\",\n    \"attributes\": {\n      \"depositProduct\": \"checking\"\
          ,\n      \"tags\": { \"purpose\": \"checking\" },\n      \"idempotencyKey\": \"3a1a33be-4e12-4603-9ed0-820922389fb8\"\
          \n    },\n    \"relationships\": {\n      \"customer\": { \"data\": { \"type\": \"customer\", \"id\": \"45555\"\
          \ } }\n    }\n  }\n}"
    docs: Creates a deposit or credit account for a customer.
  - info:
      name: Get Account by Id.
      type: http
    http:
      method: GET
      url: https://api.s.unit.sh/accounts/:accountId
      params:
      - name: accountId
        value: ''
        type: path
        description: The accountId.
    docs: Retrieves an account by ID.
  - info:
      name: Freeze Account by Id.
      type: http
    http:
      method: POST
      url: https://api.s.unit.sh/accounts/:accountId/freeze
      params:
      - name: accountId
        value: ''
        type: path
        description: The accountId.
    docs: Freezes an account.
  - info:
      name: Close an Account by Id.
      type: http
    http:
      method: POST
      url: https://api.s.unit.sh/accounts/:accountId/close
      params:
      - name: accountId
        value: ''
        type: path
        description: The accountId.
    docs: Closes an account.
- info:
    name: Cards
    type: folder
  items:
  - info:
      name: Get List of Cards.
      type: http
    http:
      method: GET
      url: https://api.s.unit.sh/cards
    docs: Lists cards.
  - info:
      name: Create a Card.
      type: http
    http:
      method: POST
      url: https://api.s.unit.sh/cards
      body:
        type: json
        data: "{\n  \"data\": {\n    \"type\": \"individualDebitCard\",\n    \"attributes\": {\n      \"shippingAddress\"\
          : { \"street\": \"5230 Newell Rd\", \"city\": \"Palo Alto\", \"state\": \"CA\", \"postalCode\": \"94303\", \"country\"\
          : \"US\" }\n    },\n    \"relationships\": {\n      \"account\": { \"data\": { \"type\": \"depositAccount\", \"\
          id\": \"10001\" } }\n    }\n  }\n}"
    docs: Creates a debit or credit card linked to an account.
  - info:
      name: Freeze a Card.
      type: http
    http:
      method: POST
      url: https://api.s.unit.sh/cards/:cardId/freeze
      params:
      - name: cardId
        value: ''
        type: path
        description: The cardId.
    docs: Freezes a card.
  - info:
      name: Report card as stolen.
      type: http
    http:
      method: POST
      url: https://api.s.unit.sh/cards/:cardId/report-stolen
      params:
      - name: cardId
        value: ''
        type: path
        description: The cardId.
    docs: Reports a card as stolen.
- info:
    name: Authorizations
    type: folder
  items:
  - info:
      name: Get List authorizations.
      type: http
    http:
      method: GET
      url: https://api.s.unit.sh/authorizations
    docs: Lists completed authorizations.
  - info:
      name: Get List Authorization Requests.
      type: http
    http:
      method: GET
      url: https://api.s.unit.sh/authorization-requests
    docs: Lists real-time authorization requests.
  - info:
      name: Approve Authorization Request by Id.
      type: http
    http:
      method: POST
      url: https://api.s.unit.sh/authorization-requests/:authorizationId/approve
      params:
      - name: authorizationId
        value: ''
        type: path
        description: The authorizationId.
    docs: Approves a real-time authorization request.
  - info:
      name: Decline Authorization Request.
      type: http
    http:
      method: POST
      url: https://api.s.unit.sh/authorization-requests/:authorizationId/decline
      params:
      - name: authorizationId
        value: ''
        type: path
        description: The authorizationId.
      body:
        type: json
        data: "{\n  \"data\": { \"type\": \"declineAuthorizationRequest\", \"attributes\": { \"reason\": \"InsufficientFunds\"\
          \ } }\n}"
    docs: Declines a real-time authorization request with a reason.
- info:
    name: Payments
    type: folder
  items:
  - info:
      name: Get List Payments.
      type: http
    http:
      method: GET
      url: https://api.s.unit.sh/payments
    docs: Lists payments.
  - info:
      name: Create a Book Payment.
      type: http
    http:
      method: POST
      url: https://api.s.unit.sh/payments
      body:
        type: json
        data: "{\n  \"data\": {\n    \"type\": \"bookPayment\",\n    \"attributes\": { \"amount\": 10000, \"description\"\
          : \"Book payment\" },\n    \"relationships\": {\n      \"account\": { \"data\": { \"type\": \"depositAccount\",\
          \ \"id\": \"10001\" } },\n      \"counterpartyAccount\": { \"data\": { \"type\": \"depositAccount\", \"id\": \"\
          10002\" } }\n    }\n  }\n}"
    docs: Creates an internal, instant book payment.
  - info:
      name: Create an ACH Payment.
      type: http
    http:
      method: POST
      url: https://api.s.unit.sh/payments
      body:
        type: json
        data: "{\n  \"data\": {\n    \"type\": \"achPayment\",\n    \"attributes\": { \"amount\": 5000, \"direction\": \"\
          Credit\", \"description\": \"ACH payment\" },\n    \"relationships\": {\n      \"account\": { \"data\": { \"type\"\
          : \"depositAccount\", \"id\": \"10001\" } },\n      \"counterparty\": { \"data\": { \"type\": \"counterparty\",\
          \ \"id\": \"20001\" } }\n    }\n  }\n}"
    docs: Creates an ACH debit or credit payment.
  - info:
      name: Cancel a Payment by Id.
      type: http
    http:
      method: POST
      url: https://api.s.unit.sh/payments/:paymentId/cancel
      params:
      - name: paymentId
        value: ''
        type: path
        description: The paymentId.
    docs: Cancels a pending payment.
- info:
    name: Counterparties
    type: folder
  items:
  - info:
      name: Get Counterparties List.
      type: http
    http:
      method: GET
      url: https://api.s.unit.sh/counterparties
    docs: Lists counterparties.
  - info:
      name: Create Counterparty.
      type: http
    http:
      method: POST
      url: https://api.s.unit.sh/counterparties
      body:
        type: json
        data: "{\n  \"data\": {\n    \"type\": \"achCounterparty\",\n    \"attributes\": { \"name\": \"John Doe\", \"routingNumber\"\
          : \"812345678\", \"accountNumber\": \"1234567890\", \"accountType\": \"Checking\", \"type\": \"Person\", \"permissions\"\
          : \"CreditOnly\" },\n    \"relationships\": { \"customer\": { \"data\": { \"type\": \"customer\", \"id\": \"45555\"\
          \ } } }\n  }\n}"
    docs: Creates a counterparty (external bank account).
  - info:
      name: Get Institution by Routing Number.
      type: http
    http:
      method: GET
      url: https://api.s.unit.sh/institutions/:routingNumber
      params:
      - name: routingNumber
        value: ''
        type: path
        description: The routingNumber.
    docs: Looks up a financial institution by routing number.
- info:
    name: Checks
    type: folder
  items:
  - info:
      name: Get List Check Deposits.
      type: http
    http:
      method: GET
      url: https://api.s.unit.sh/check-deposits
    docs: Lists check deposits.
  - info:
      name: Create Check Deposit.
      type: http
    http:
      method: POST
      url: https://api.s.unit.sh/check-deposits
      body:
        type: json
        data: "{\n  \"data\": {\n    \"type\": \"checkDeposit\",\n    \"attributes\": { \"amount\": 12345, \"description\"\
          : \"Check deposit\" },\n    \"relationships\": { \"account\": { \"data\": { \"type\": \"depositAccount\", \"id\"\
          : \"10001\" } } }\n  }\n}"
    docs: Creates a mobile check deposit.
  - info:
      name: Create Check Payment.
      type: http
    http:
      method: POST
      url: https://api.s.unit.sh/check-payments
      body:
        type: json
        data: "{\n  \"data\": {\n    \"type\": \"checkPayment\",\n    \"attributes\": { \"amount\": 5000, \"description\"\
          : \"Check payment\" },\n    \"relationships\": { \"account\": { \"data\": { \"type\": \"depositAccount\", \"id\"\
          : \"10001\" } } }\n  }\n}"
    docs: Creates an outbound, print-and-mail check payment.
- info:
    name: Transactions
    type: folder
  items:
  - info:
      name: Get List Transactions.
      type: http
    http:
      method: GET
      url: https://api.s.unit.sh/transactions?page[limit]=20&page[offset]=0
      params:
      - name: page[limit]
        value: '20'
        type: query
        description: The page[limit] query parameter.
      - name: page[offset]
        value: '0'
        type: query
        description: The page[offset] query parameter.
    docs: Lists posted transactions. Paging requires filtering by customer id or account id.
  - info:
      name: Get Transaction by Id.
      type: http
    http:
      method: GET
      url: https://api.s.unit.sh/accounts/:accountId/transactions/:transactionId
      params:
      - name: accountId
        value: ''
        type: path
        description: The accountId.
      - name: transactionId
        value: ''
        type: path
        description: The transactionId.
    docs: Retrieves a single transaction.
- info:
    name: Statements and Tax Forms
    type: folder
  items:
  - info:
      name: Get List Statements.
      type: http
    http:
      method: GET
      url: https://api.s.unit.sh/statements
    docs: Lists monthly account statements.
  - info:
      name: Get PDF Statement by Id.
      type: http
    http:
      method: GET
      url: https://api.s.unit.sh/statements/:statementId/pdf
      params:
      - name: statementId
        value: ''
        type: path
        description: The statementId.
    docs: Downloads a statement as PDF.
  - info:
      name: Get Tax Forms List.
      type: http
    http:
      method: GET
      url: https://api.s.unit.sh/tax-forms
    docs: Lists tax forms.
- info:
    name: Events and Webhooks
    type: folder
  items:
  - info:
      name: Get Events List.
      type: http
    http:
      method: GET
      url: https://api.s.unit.sh/events?page[limit]=20&filter[since]=2026-06-01T00:00:00.000Z
      params:
      - name: page[limit]
        value: '20'
        type: query
        description: The page[limit] query parameter.
      - name: filter[since]
        value: '2026-06-01T00:00:00.000Z'
        type: query
        description: The filter[since] query parameter.
    docs: Lists events going back up to 90 days.
  - info:
      name: Get List Webhooks.
      type: http
    http:
      method: GET
      url: https://api.s.unit.sh/webhooks
    docs: Lists webhook subscriptions.
  - info:
      name: Create Webhook.
      type: http
    http:
      method: POST
      url: https://api.s.unit.sh/webhooks
      body:
        type: json
        data: "{\n  \"data\": {\n    \"type\": \"webhook\",\n    \"attributes\": { \"url\": \"https://example.com/webhook\"\
          , \"secret\": \"my-signing-secret\" }\n  }\n}"
    docs: Creates a webhook subscription, signed via X-Unit-Signature.
- info:
    name: Risk and Fraud
    type: folder
  items:
  - info:
      name: Create Stop Payment.
      type: http
    http:
      method: POST
      url: https://api.s.unit.sh/stop-payments
      body:
        type: json
        data: "{\n  \"data\": {\n    \"type\": \"achStopPayment\",\n    \"attributes\": { \"description\": \"Stop payment\"\
          \ },\n    \"relationships\": { \"account\": { \"data\": { \"type\": \"depositAccount\", \"id\": \"10001\" } } }\n\
          \  }\n}"
    docs: Creates a stop payment on an ACH or check.
  - info:
      name: Get List Disputes.
      type: http
    http:
      method: GET
      url: https://api.s.unit.sh/disputes
    docs: Lists card disputes.
- info:
    name: Credit and Repayments
    type: folder
  items:
  - info:
      name: Get List Repayments.
      type: http
    http:
      method: GET
      url: https://api.s.unit.sh/repayments
    docs: Lists repayments on credit accounts.
  - info:
      name: Create a Repayment.
      type: http
    http:
      method: POST
      url: https://api.s.unit.sh/repayments
      body:
        type: json
        data: "{\n  \"data\": {\n    \"type\": \"bookRepayment\",\n    \"attributes\": { \"amount\": 5000, \"description\"\
          : \"Repayment\" },\n    \"relationships\": {\n      \"account\": { \"data\": { \"type\": \"creditAccount\", \"id\"\
          : \"10003\" } },\n      \"counterpartyAccount\": { \"data\": { \"type\": \"depositAccount\", \"id\": \"10001\" }\
          \ }\n    }\n  }\n}"
    docs: Creates a one-time repayment on a credit account.
- info:
    name: Fees and Rewards
    type: folder
  items:
  - info:
      name: Create Fee.
      type: http
    http:
      method: POST
      url: https://api.s.unit.sh/fees
      body:
        type: json
        data: "{\n  \"data\": {\n    \"type\": \"fee\",\n    \"attributes\": { \"amount\": 500, \"description\": \"Monthly\
          \ service fee\" },\n    \"relationships\": { \"account\": { \"data\": { \"type\": \"depositAccount\", \"id\": \"\
          10001\" } } }\n  }\n}"
    docs: Charges a customer's account for an activity not covered by native fees.
  - info:
      name: Get Rewards List.
      type: http
    http:
      method: GET
      url: https://api.s.unit.sh/rewards
    docs: Lists rewards.
- info:
    name: API Tokens
    type: folder
  items:
  - info:
      name: Get List Org API Tokens.
      type: http
    http:
      method: GET
      url: https://api.s.unit.sh/users/:userId/api-tokens
      params:
      - name: userId
        value: ''
        type: path
        description: The userId.
    docs: Lists a user's org-level API tokens.
  - info:
      name: Create Customer Token.
      type: http
    http:
      method: POST
      url: https://api.s.unit.sh/customers/:customerId/token
      params:
      - name: customerId
        value: ''
        type: path
        description: The customerId.
      body:
        type: json
        data: "{\n  \"data\": {\n    \"type\": \"customerToken\",\n    \"attributes\": { \"scope\": \"accounts payments cards\"\
          \ }\n  }\n}"
    docs: Issues a scoped, short-lived customer API token.
bundled: true