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OpenAPI Specification

openapi: 3.2.0
info:
  title: Lithic Transaction API
  description: The Lithic API is a card issuing and issuer-processor platform for issuing virtual and physical cards, authorizing and clearing transactions, moving money across ledgered financial accounts, and managing the full card lifecycle - KYC/KYB account holder onboarding, authorization rules and real-time Auth Stream Access (ASA) decisioning, disputes, tokenization into digital wallets, 3DS authentication, ACH payments, book transfers, external payments, settlement reporting, and fraud/transaction…
  version: 1.0.0
  contact:
    name: Lithic
    url: https://www.lithic.com
  license:
    name: Apache 2.0
    url: https://www.apache.org/licenses/LICENSE-2.0.txt
servers:
- url: https://api.lithic.com
  description: Production
- url: https://sandbox.lithic.com
  description: Sandbox (mirrors production functionality)
security:
- ApiKeyAuth: []
tags:
- name: Transaction
  description: Card transaction authorization, clearing, and simulation.
paths:
  /v1/transactions/{transaction_token}/enhanced_commercial_data:
    get:
      operationId: listEnhancedTransactionData
      tags:
      - Transaction
      summary: List enhanced commercial data
      description: Get all L2/L3 enhanced commercial data associated with a transaction. Not available in sandbox.
      parameters:
      - name: transaction_token
        in: path
        required: true
        description: The token of the transaction that the enhanced data is associated with.
        schema:
          type: string
      responses:
        '200':
          description: Successful response.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Transaction'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '422':
          $ref: '#/components/responses/ValidationError'
  /v1/transactions/{transaction_token}/expire_authorization:
    post:
      operationId: expireAuthorization
      tags:
      - Transaction
      summary: Expire an authorization
      description: Expire authorization
      parameters:
      - name: transaction_token
        in: path
        required: true
        description: The token of the transaction to expire.
        schema:
          type: string
      responses:
        '200':
          description: Successful response.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Transaction'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '422':
          $ref: '#/components/responses/ValidationError'
  /v1/transactions/{transaction_token}/route:
    post:
      operationId: routeTransaction
      tags:
      - Transaction
      summary: Route a transaction
      description: Route a card transaction to a financial account. Only available for select use cases and programs.
      parameters:
      - name: transaction_token
        in: path
        required: true
        description: The token of the transaction to route.
        schema:
          type: string
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              additionalProperties: true
      responses:
        '200':
          description: Successful response.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Transaction'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '422':
          $ref: '#/components/responses/ValidationError'
  /v1/transactions/events/{event_token}/enhanced_commercial_data:
    get:
      operationId: getEnhancedTransactionData
      tags:
      - Transaction
      summary: Get enhanced commercial data
      description: Get L2/L3 enhanced commercial data associated with a transaction event. Not available in sandbox.
      parameters:
      - name: event_token
        in: path
        required: true
        description: The token of the transaction event that the enhanced data is associated with.
        schema:
          type: string
      responses:
        '200':
          description: Successful response.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Transaction'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '422':
          $ref: '#/components/responses/ValidationError'
  /v1/simulate/authorization_advice:
    post:
      operationId: postSimulateAuthorizationAdvice
      tags:
      - Transaction
      summary: Simulate authorization advice
      description: Simulates an authorization advice from the card network as if it came from a merchant acquirer. An authorization advice changes the pending amount of the transaction.
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              additionalProperties: true
      responses:
        '200':
          description: Successful response.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Transaction'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '422':
          $ref: '#/components/responses/ValidationError'
  /v1/simulate/authorize:
    post:
      operationId: postSimulateAuthorize
      tags:
      - Transaction
      summary: Simulate authorization
      description: Simulates an authorization request from the card network as if it came from a merchant acquirer. If you are configured for ASA, simulating authorizations requires your ASA client to be set up properly, i.e. be able to respond to the ASA request with a valid JSON. For users that are not configured fo
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              additionalProperties: true
      responses:
        '200':
          description: Successful response.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Transaction'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '422':
          $ref: '#/components/responses/ValidationError'
  /v1/simulate/clearing:
    post:
      operationId: postSimulateClearing
      tags:
      - Transaction
      summary: Simulate clearing
      description: Clears an existing authorization, either debit or credit. After this event, the transaction transitions from `PENDING` to `SETTLED` status. If `amount` is not set, the full amount of the transaction will be cleared. Transactions that have already cleared, either partially or fully, cannot be cleare
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              additionalProperties: true
      responses:
        '200':
          description: Successful response.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Transaction'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '422':
          $ref: '#/components/responses/ValidationError'
  /v1/simulate/credit_authorization_advice:
    post:
      operationId: postSimulateCreditAuthorizationAdvice
      tags:
      - Transaction
      summary: Simulate credit authorization advice
      description: Simulates a credit authorization advice from the card network. This message indicates that the network approved a credit authorization on your behalf.
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              additionalProperties: true
      responses:
        '200':
          description: Successful response.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Transaction'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '422':
          $ref: '#/components/responses/ValidationError'
  /v1/simulate/return:
    post:
      operationId: postSimulateReturn
      tags:
      - Transaction
      summary: Simulate return
      description: Returns, or refunds, an amount back to a card. Returns simulated via this endpoint clear immediately, without prior authorization, and result in a `SETTLED` transaction status.
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              additionalProperties: true
      responses:
        '200':
          description: Successful response.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Transaction'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '422':
          $ref: '#/components/responses/ValidationError'
  /v1/simulate/return_reversal:
    post:
      operationId: postSimulateReturnReversal
      tags:
      - Transaction
      summary: Simulate return reversal
      description: Reverses a return, i.e. a credit transaction with a `SETTLED` status. Returns can be financial credit authorizations, or credit authorizations that have cleared.
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              additionalProperties: true
      responses:
        '200':
          description: Successful response.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Transaction'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '422':
          $ref: '#/components/responses/ValidationError'
  /v1/simulate/void:
    post:
      operationId: postSimulateVoid
      tags:
      - Transaction
      summary: Simulate void
      description: Voids a pending authorization. If `amount` is not set, the full amount will be voided. Can be used on partially voided transactions but not partially cleared transactions. _Simulating an authorization expiry on credit authorizations or credit authorization advice is not currently supported but will
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              additionalProperties: true
      responses:
        '200':
          description: Successful response.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Transaction'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '422':
          $ref: '#/components/responses/ValidationError'
  /v1/transactions:
    get:
      operationId: getTransactions
      tags:
      - Transaction
      summary: List card transactions
      description: List card transactions. All amounts are in the smallest unit of their respective currency (e.g., cents for USD) and inclusive of any acquirer fees.
      responses:
        '200':
          description: Successful response.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Transaction'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '422':
          $ref: '#/components/responses/ValidationError'
  /v1/transactions/{transaction_token}:
    get:
      operationId: getTransactionByToken
      tags:
      - Transaction
      summary: Get card transaction
      description: Get a specific card transaction. All amounts are in the smallest unit of their respective currency (e.g., cents for USD).
      responses:
        '200':
          description: Successful response.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Transaction'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '422':
          $ref: '#/components/responses/ValidationError'
components:
  responses:
    Unauthorized:
      description: Missing or invalid API key.
    ValidationError:
      description: The request failed validation.
  schemas:
    Transaction:
      type: object
      description: Card transaction authorization, clearing, and simulation.
      properties:
        token:
          type: string
          format: uuid
          description: Globally unique identifier for the object.
        created:
          type: string
          format: date-time
      additionalProperties: true
  securitySchemes:
    ApiKeyAuth:
      type: apiKey
      in: header
      name: Authorization
      description: Raw API secret key value (not prefixed with "Bearer").