Navan Expense Transactions API

openapi: 3.0.3
info:
  title: Navan API
  description: >-
    The Navan API is the public developer surface for the Navan (formerly
    TripActions) corporate travel, expense, and corporate card platform. It is a
    REST/HTTPS API secured with OAuth 2.0 using the client-credentials grant.
    Administrators generate a client_id / client_secret in the Navan app under
    Settings > Integrations (API), exchange them for a Bearer access token, and
    call the API with `Authorization: Bearer <token>`. Access is scoped
    (e.g. bookings:read, users:read, users:write, users:delete, and the expense
    read/write scopes).


    Endpoint status: the Expense API paths (transactions, fees, adjustments,
    receipts, custom fields) and the travel/v1 Users paths are CONFIRMED against
    Navan's published API reference and third-party integration guides. The
    Bookings and Webhook subscription-management paths are MODELED - the relevant
    scopes and capabilities are documented by Navan, but the exact request paths
    are behind a gated reference and are represented here as a best-effort model.
    Modeled operations are flagged with `x-endpoint-status: modeled`.
  version: '1.0'
  contact:
    name: Navan Developers
    url: https://developer.navan.com/
  x-rebrand-note: >-
    Navan was known as TripActions until its February 2022 rebrand to Navan;
    some legacy hostnames and token paths still carry a `ta-` (TripActions)
    prefix, e.g. the `ta-auth` OAuth token path.
servers:
  - url: https://api.navan.com
    description: Navan API (US / global)
security:
  - oauth2ClientCredentials: []
tags:
  - name: Transactions
    description: Expense transactions across Navan card, Connect, manual, and repayment types. CONFIRMED.
  - name: Fees and Adjustments
    description: Fees, credit/debit adjustments, daily rebates, and disputes. CONFIRMED.
  - name: Receipts
    description: Receipt URLs and downloads for expense transactions. CONFIRMED.
  - name: Custom Fields
    description: Company custom fields used for cost-center / GL coding. CONFIRMED.
  - name: Users
    description: User provisioning and lifecycle under travel/v1. CONFIRMED.
  - name: Bookings
    description: Booking (trip) records for downstream reporting. MODELED.
  - name: Webhooks
    description: Webhook subscription management for change notifications. MODELED.
paths:
  # ---------------- Transactions (CONFIRMED) ----------------
  /v1/expense/transactions:
    get:
      operationId: listTransactions
      tags: [Transactions]
      summary: List transactions
      description: Generic multi-type retrieval of expense transactions. CONFIRMED.
      parameters:
        - $ref: '#/components/parameters/FromDate'
        - $ref: '#/components/parameters/ToDate'
        - $ref: '#/components/parameters/Cursor'
        - $ref: '#/components/parameters/PageSize'
      responses:
        '200':
          description: A page of transactions.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/TransactionList'
        '401':
          $ref: '#/components/responses/Unauthorized'
    patch:
      operationId: updateTransactions
      tags: [Transactions]
      summary: Batch update transactions
      description: Batch-update a set of transactions (for example custom-field coding). CONFIRMED.
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/TransactionBatchUpdate'
      responses:
        '200':
          description: Update result.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/TransactionList'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '422':
          $ref: '#/components/responses/ValidationError'
  /v1/expense/transactions/{id}:
    parameters:
      - $ref: '#/components/parameters/TransactionId'
    get:
      operationId: getTransaction
      tags: [Transactions]
      summary: Get a transaction
      description: Retrieve a single transaction by its ID. CONFIRMED.
      responses:
        '200':
          description: The requested transaction.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Transaction'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
  /v1/expense/card-transactions:
    get:
      operationId: listCardTransactions
      tags: [Transactions]
      summary: List Navan card transactions
      description: Retrieve transactions made on Navan-issued corporate cards. CONFIRMED.
      parameters:
        - $ref: '#/components/parameters/FromDate'
        - $ref: '#/components/parameters/ToDate'
        - $ref: '#/components/parameters/Cursor'
      responses:
        '200':
          description: A page of card transactions.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/TransactionList'
        '401':
          $ref: '#/components/responses/Unauthorized'
  /v1/expense/connect-transactions:
    get:
      operationId: listConnectTransactions
      tags: [Transactions]
      summary: List Connect card transactions
      description: Retrieve transactions from Navan Connect external card integrations. CONFIRMED.
      parameters:
        - $ref: '#/components/parameters/FromDate'
        - $ref: '#/components/parameters/ToDate'
        - $ref: '#/components/parameters/Cursor'
      responses:
        '200':
          description: A page of Connect transactions.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/TransactionList'
        '401':
          $ref: '#/components/responses/Unauthorized'
  /v1/expense/manual-transactions:
    get:
      operationId: listManualTransactions
      tags: [Transactions]
      summary: List manual transactions
      description: Retrieve manual submissions and payroll transactions. CONFIRMED.
      parameters:
        - $ref: '#/components/parameters/FromDate'
        - $ref: '#/components/parameters/ToDate'
        - $ref: '#/components/parameters/Cursor'
      responses:
        '200':
          description: A page of manual transactions.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/TransactionList'
        '401':
          $ref: '#/components/responses/Unauthorized'
  /v1/expense/repayments:
    get:
      operationId: listRepayments
      tags: [Transactions]
      summary: List repayments
      description: Retrieve user repayment transactions. CONFIRMED.
      parameters:
        - $ref: '#/components/parameters/FromDate'
        - $ref: '#/components/parameters/ToDate'
        - $ref: '#/components/parameters/Cursor'
      responses:
        '200':
          description: A page of repayments.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/TransactionList'
        '401':
          $ref: '#/components/responses/Unauthorized'
  # ---------------- Fees and Adjustments (CONFIRMED) ----------------
  /v1/expense/fees:
    get:
      operationId: listFees
      tags: [Fees and Adjustments]
      summary: List fees
      description: Retrieve direct-reimbursement, FX, and platform fees. CONFIRMED.
      parameters:
        - $ref: '#/components/parameters/FromDate'
        - $ref: '#/components/parameters/ToDate'
      responses:
        '200':
          description: A page of fees.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/TransactionList'
        '401':
          $ref: '#/components/responses/Unauthorized'
  /v1/expense/adjustments:
    get:
      operationId: listAdjustments
      tags: [Fees and Adjustments]
      summary: List adjustments
      description: Retrieve credit and debit memo adjustments. CONFIRMED.
      parameters:
        - $ref: '#/components/parameters/FromDate'
        - $ref: '#/components/parameters/ToDate'
      responses:
        '200':
          description: A page of adjustments.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/TransactionList'
        '401':
          $ref: '#/components/responses/Unauthorized'
  /v1/expense/daily-rebates:
    get:
      operationId: listDailyRebates
      tags: [Fees and Adjustments]
      summary: List daily rebates
      description: Retrieve daily rebate transactions. CONFIRMED.
      parameters:
        - $ref: '#/components/parameters/FromDate'
        - $ref: '#/components/parameters/ToDate'
      responses:
        '200':
          description: A page of daily rebates.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/TransactionList'
        '401':
          $ref: '#/components/responses/Unauthorized'
  /v1/expense/disputes:
    get:
      operationId: listDisputes
      tags: [Fees and Adjustments]
      summary: List disputes
      description: Retrieve dispute transactions. CONFIRMED.
      parameters:
        - $ref: '#/components/parameters/FromDate'
        - $ref: '#/components/parameters/ToDate'
      responses:
        '200':
          description: A page of disputes.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/TransactionList'
        '401':
          $ref: '#/components/responses/Unauthorized'
  # ---------------- Receipts (CONFIRMED) ----------------
  /v1/expense/transactions/{id}/receipt:
    parameters:
      - $ref: '#/components/parameters/TransactionId'
    get:
      operationId: getTransactionReceipt
      tags: [Receipts]
      summary: Get receipt URLs for a transaction
      description: Retrieve receipt image URLs for a given transaction. CONFIRMED.
      responses:
        '200':
          description: Receipt URLs.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ReceiptList'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
  /v1/expense/transactions/{id}/receipt/download:
    parameters:
      - $ref: '#/components/parameters/TransactionId'
    get:
      operationId: downloadTransactionReceipt
      tags: [Receipts]
      summary: Download a transaction receipt
      description: Follow a redirect to download the receipt file for a transaction. CONFIRMED.
      responses:
        '302':
          description: Redirect to the receipt file.
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
  /v1/expense/transactions/receipts:
    get:
      operationId: listReceipts
      tags: [Receipts]
      summary: Batch list receipt URLs
      description: Batch-fetch receipt URLs across transactions filtered by date. CONFIRMED.
      parameters:
        - $ref: '#/components/parameters/FromDate'
        - $ref: '#/components/parameters/ToDate'
      responses:
        '200':
          description: Receipt URLs across transactions.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ReceiptList'
        '401':
          $ref: '#/components/responses/Unauthorized'
  # ---------------- Custom Fields (CONFIRMED) ----------------
  /v1/expense/custom-fields:
    get:
      operationId: listCustomFields
      tags: [Custom Fields]
      summary: List custom fields
      description: List all company custom fields. CONFIRMED.
      responses:
        '200':
          description: A list of custom fields.
          content:
            application/json:
              schema:
                type: object
                properties:
                  data:
                    type: array
                    items:
                      $ref: '#/components/schemas/CustomField'
        '401':
          $ref: '#/components/responses/Unauthorized'
  /v1/expense/custom-fields/{fieldName}:
    parameters:
      - $ref: '#/components/parameters/FieldName'
    get:
      operationId: getCustomField
      tags: [Custom Fields]
      summary: Get a custom field
      description: Retrieve a single custom field definition by name. CONFIRMED.
      responses:
        '200':
          description: The requested custom field.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/CustomField'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
  /v1/expense/custom-fields/{fieldName}/options:
    parameters:
      - $ref: '#/components/parameters/FieldName'
    post:
      operationId: manageCustomFieldOptions
      tags: [Custom Fields]
      summary: Batch manage custom field options
      description: Batch-create or update the options (values) available on a custom field. CONFIRMED.
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/CustomFieldOptionsInput'
      responses:
        '200':
          description: Job accepted (may run asynchronously).
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Job'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '422':
          $ref: '#/components/responses/ValidationError'
  /v1/expense/custom-fields/jobs/{job_id}:
    parameters:
      - name: job_id
        in: path
        required: true
        description: The asynchronous job ID returned by an options-management request.
        schema:
          type: string
    get:
      operationId: getCustomFieldJob
      tags: [Custom Fields]
      summary: Get custom field job status
      description: Poll the status of an asynchronous custom-field options job. CONFIRMED.
      responses:
        '200':
          description: Job status.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Job'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
  # ---------------- Users (CONFIRMED) ----------------
  /travel/v1/users:
    get:
      operationId: listUsers
      tags: [Users]
      summary: List users
      description: List users with cursor-based pagination. Requires users:read. CONFIRMED.
      parameters:
        - $ref: '#/components/parameters/Cursor'
        - $ref: '#/components/parameters/PageSize'
      responses:
        '200':
          description: A page of users.
          content:
            application/json:
              schema:
                type: object
                properties:
                  data:
                    type: array
                    items:
                      $ref: '#/components/schemas/User'
                  next_cursor:
                    type: string
                    nullable: true
        '401':
          $ref: '#/components/responses/Unauthorized'
    post:
      operationId: createUser
      tags: [Users]
      summary: Create a user
      description: Create a new user. Requires users:write. CONFIRMED.
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/UserInput'
      responses:
        '200':
          description: The created user.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/User'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '422':
          $ref: '#/components/responses/ValidationError'
  /travel/v1/users/{userId}:
    parameters:
      - $ref: '#/components/parameters/UserId'
    get:
      operationId: getUser
      tags: [Users]
      summary: Get a user
      description: Retrieve a user by ID. Requires users:read. CONFIRMED.
      responses:
        '200':
          description: The requested user.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/User'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
    patch:
      operationId: updateUser
      tags: [Users]
      summary: Update a user
      description: Update a user record. Requires users:write. CONFIRMED.
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/UserInput'
      responses:
        '200':
          description: The updated user.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/User'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
        '422':
          $ref: '#/components/responses/ValidationError'
    delete:
      operationId: deactivateUser
      tags: [Users]
      summary: Deactivate a user
      description: Soft-delete (deactivate) a user account. Requires users:delete. CONFIRMED.
      responses:
        '200':
          description: Deactivation confirmation.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/DeleteResponse'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
  # ---------------- Bookings (MODELED) ----------------
  /travel/v1/bookings:
    get:
      operationId: listBookings
      tags: [Bookings]
      summary: List bookings
      description: >-
        List booking (trip) records for downstream reporting and ERP transfer.
        The bookings:read scope is confirmed; the path and query parameters are
        MODELED from Navan's booking-data integration documentation.
      x-endpoint-status: modeled
      parameters:
        - $ref: '#/components/parameters/FromDate'
        - $ref: '#/components/parameters/ToDate'
        - $ref: '#/components/parameters/Cursor'
      responses:
        '200':
          description: A page of bookings.
          content:
            application/json:
              schema:
                type: object
                properties:
                  data:
                    type: array
                    items:
                      $ref: '#/components/schemas/Booking'
                  next_cursor:
                    type: string
                    nullable: true
        '401':
          $ref: '#/components/responses/Unauthorized'
  /travel/v1/bookings/{bookingId}:
    parameters:
      - name: bookingId
        in: path
        required: true
        description: The booking (trip) identifier.
        schema:
          type: string
    get:
      operationId: getBooking
      tags: [Bookings]
      summary: Get a booking
      description: >-
        Retrieve a single booking by ID. MODELED - path inferred from the
        booking-data integration surface; verify against the gated reference.
      x-endpoint-status: modeled
      responses:
        '200':
          description: The requested booking.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Booking'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
  # ---------------- Webhooks (MODELED) ----------------
  /v1/expense/webhooks:
    get:
      operationId: listWebhooks
      tags: [Webhooks]
      summary: List webhook subscriptions
      description: >-
        List configured webhook subscriptions. Navan documents webhooks as a
        first-class Expense API feature; the subscription-management path is
        MODELED because the detailed reference is gated.
      x-endpoint-status: modeled
      responses:
        '200':
          description: A list of webhook subscriptions.
          content:
            application/json:
              schema:
                type: object
                properties:
                  data:
                    type: array
                    items:
                      $ref: '#/components/schemas/Webhook'
        '401':
          $ref: '#/components/responses/Unauthorized'
    post:
      operationId: createWebhook
      tags: [Webhooks]
      summary: Create a webhook subscription
      description: Register a webhook endpoint to receive change notifications. MODELED.
      x-endpoint-status: modeled
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/WebhookInput'
      responses:
        '200':
          description: The created webhook subscription.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Webhook'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '422':
          $ref: '#/components/responses/ValidationError'
  /v1/expense/webhooks/{id}:
    parameters:
      - name: id
        in: path
        required: true
        description: The webhook subscription ID.
        schema:
          type: string
    get:
      operationId: getWebhook
      tags: [Webhooks]
      summary: Get a webhook subscription
      description: Retrieve a webhook subscription by ID. MODELED.
      x-endpoint-status: modeled
      responses:
        '200':
          description: The requested webhook subscription.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Webhook'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
    delete:
      operationId: deleteWebhook
      tags: [Webhooks]
      summary: Delete a webhook subscription
      description: Delete a webhook subscription. MODELED.
      x-endpoint-status: modeled
      responses:
        '200':
          description: Deletion confirmation.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/DeleteResponse'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
components:
  securitySchemes:
    oauth2ClientCredentials:
      type: oauth2
      description: >-
        OAuth 2.0 client-credentials flow. Generate a client_id / client_secret
        in the Navan app under Settings > Integrations (API), then POST
        grant_type=client_credentials to the token URL to obtain a Bearer access
        token. US token URL: https://app.navan.com/ta-auth/oauth/token ;
        EU token URL: https://app-fra.navan.com/ta-auth/oauth/token . (Some
        integrations reference an https://api.navan.com/ta-auth/oauth/token or
        /auth/v1/token variant; confirm the current token URL in the Navan
        developer portal.)
      flows:
        clientCredentials:
          tokenUrl: https://app.navan.com/ta-auth/oauth/token
          scopes:
            bookings:read: Read booking (trip) data.
            users:read: Read user profiles.
            users:write: Create and modify users.
            users:delete: Deactivate users.
            liquid:read: Read expense data (transactions, fees, receipts, custom fields).
            liquid:write: Update expense data.
  parameters:
    Cursor:
      name: cursor
      in: query
      required: false
      description: Opaque cursor for pagination.
      schema:
        type: string
    PageSize:
      name: page_size
      in: query
      required: false
      description: Maximum number of records to return per page.
      schema:
        type: integer
    FromDate:
      name: from
      in: query
      required: false
      description: Start of the date range filter (ISO 8601).
      schema:
        type: string
        format: date-time
    ToDate:
      name: to
      in: query
      required: false
      description: End of the date range filter (ISO 8601).
      schema:
        type: string
        format: date-time
    TransactionId:
      name: id
      in: path
      required: true
      description: The transaction identifier.
      schema:
        type: string
    FieldName:
      name: fieldName
      in: path
      required: true
      description: The custom field name.
      schema:
        type: string
    UserId:
      name: userId
      in: path
      required: true
      description: The user identifier.
      schema:
        type: string
  responses:
    Unauthorized:
      description: Missing or invalid access token, or insufficient scope.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
    NotFound:
      description: The requested resource was not found.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
    ValidationError:
      description: The request payload failed validation.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
  schemas:
    Error:
      type: object
      properties:
        error:
          type: object
          properties:
            code:
              type: string
            message:
              type: string
            details:
              type: object
              additionalProperties: true
    DeleteResponse:
      type: object
      properties:
        id:
          type: string
        deactivated:
          type: boolean
    Transaction:
      type: object
      properties:
        id:
          type: string
        type:
          type: string
          description: The transaction type (card, connect, manual, repayment, fee, adjustment, rebate, dispute).
        status:
          type: string
        merchant:
          type: string
        amount:
          type: number
        currency:
          type: string
        date:
          type: string
          format: date-time
        userId:
          type: string
        customFieldValues:
          type: object
          additionalProperties: true
    TransactionList:
      type: object
      properties:
        data:
          type: array
          items:
            $ref: '#/components/schemas/Transaction'
        next_cursor:
          type: string
          nullable: true
    TransactionBatchUpdate:
      type: object
      required:
        - transactions
      properties:
        transactions:
          type: array
          items:
            type: object
            properties:
              id:
                type: string
              customFieldValues:
                type: object
                additionalProperties: true
    Receipt:
      type: object
      properties:
        transactionId:
          type: string
        url:
          type: string
          format: uri
        fileName:
          type: string
        contentType:
          type: string
    ReceiptList:
      type: object
      properties:
        data:
          type: array
          items:
            $ref: '#/components/schemas/Receipt'
    CustomField:
      type: object
      properties:
        name:
          type: string
        label:
          type: string
        type:
          type: string
        required:
          type: boolean
        options:
          type: array
          items:
            type: string
    CustomFieldOptionsInput:
      type: object
      required:
        - options
      properties:
        options:
          type: array
          items:
            type: object
            properties:
              value:
                type: string
              action:
                type: string
                enum:
                  - add
                  - update
                  - remove
    Job:
      type: object
      properties:
        job_id:
          type: string
        status:
          type: string
          enum:
            - pending
            - running
            - completed
            - failed
    User:
      allOf:
        - $ref: '#/components/schemas/UserInput'
        - type: object
          properties:
            id:
              type: string
            status:
              type: string
              enum:
                - active
                - deactivated
    UserInput:
      type: object
      required:
        - email
      properties:
        email:
          type: string
          format: email
        givenName:
          type: string
        familyName:
          type: string
        employeeId:
          type: string
        department:
          type: string
        costCenter:
          type: string
        managerEmail:
          type: string
          format: email
    Booking:
      type: object
      description: A booking (trip) record. MODELED schema.
      properties:
        id:
          type: string
        type:
          type: string
          enum:
            - flight
            - hotel
            - car
            - rail
        travelerId:
          type: string
        status:
          type: string
        totalAmount:
          type: number
        currency:
          type: string
        startDate:
          type: string
          format: date-time
        endDate:
          type: string
          format: date-time
        customFieldValues:
          type: object
          additionalProperties: true
    Webhook:
      allOf:
        - $ref: '#/components/schemas/WebhookInput'
        - type: object
          properties:
            id:
              type: string
    WebhookInput:
      type: object
      required:
        - url
        - events
      properties:
        url:
          type: string
          format: uri
        events:
          type: array
          items:
            type: string
        secret:
          type: string
          description: Signing secret used to verify webhook payload authenticity.