Lone Wolf TransactionDesk Partner API

---
openapi: 3.0.3
info:
  title: TransactionDesk Partner API
  description: |-
    Lonewolf's TransactionDesk API for Partners to integrate with the TransactionDesk application.

    ## Authorization

    ### Authorization Code Flow

    1. Redirect the user to the OAuth authorization URL:
       `https://api.pre.transactiondesk.com/oauth/authorize?client_id=Lonewolf&redirect_uri=https://www.example.com&response_type=code&state=active`
    2. The user logs in via the Lonewolf Authentication system.
    3. On success, the user is redirected back to your `redirect_uri` with a `code` parameter appended.
    4. Exchange the code for an access token via `POST /oauth/token` (see Authentication section). The code is one-time-use and expires in 10 minutes.
    5. Include the access token in the `Authorization: Bearer <token>` header on every request.

    ### Client Credentials Flow

    For enterprise integrations, use `grant_type=client_credentials`. No user redirect is required. Include an `On-Behalf-Of` header with the target user's GUID on API requests.

    ## Universal Global Fields

    Below is a list of the fields related to a transaction that can be updated through the API for the Transaction Desk System.

    ### 1. Property Information

    #### Address
    - `streetNumber`
    - `streetName`
    - `city`
    - `county`
    - `state`
    - `zipCode`

    #### Subdivision and Parcel Information
    - `subDivision`
    - `lotNumber`
    - `block`
    - `pageNumber`
    - `platBook`

    #### Property Characteristics
    - `yearBuilt`
    - `zoningClass`
    - `schoolDistrict`

    #### Tax and Legal Information
    - `taxNumber`
    - `township`
    - `legalDescription`

    ### 2. Listing Information

    #### Listing Identification
    - `mlsNumber`

    #### Pricing
    - `listPrice`

    #### Listing Timeline
    - `expirationDate`

    #### Property Inclusions and Exclusions
    - `propertyIncludes`
    - `propertyExcludes`
    - `leasedItems`

    ### 3. Purchase Information

    #### Pricing
    - `purchasePrice`

    #### Offer Timeline
    - `offerDate`
    - `offerExpirationDate`
    - `offerAcceptanceDate`

    #### Financing Timeline
    - `applicationDate`
    - `approvalDate`

    #### Deposits
    - `depositAmount`
    - `additionalDepositAmount`
    - `additionalDepositDate`

    #### Transaction Milestones
    - `fundingDate`
    - `possessionDate`
    - `closingDate`
  version: '2.0'
servers:
- url: https://api.pre.transactiondesk.com
security:
- bearerAuth: []
components:
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      bearerFormat: JWT
  schemas:
    ErrorUnauthorized:
      type: object
      properties:
        code:
          type: integer
          example: 401
        message:
          type: string
          example: Unauthorized. The user is not authenticated.
        details:
          type: array
          items: {}
        data:
          nullable: true
    ErrorNotFound:
      type: object
      properties:
        code:
          type: integer
          example: 404
        message:
          type: string
          example: Item not found.
        details:
          type: array
          items: {}
    ErrorBadRequest:
      type: object
      properties:
        code:
          type: integer
          example: 400
        message:
          type: string
          example: Request was not valid.
        details:
          type: array
          items:
            type: string
    Transaction:
      type: object
      properties:
        id:
          type: string
          format: uuid
          example: 805355ec-7f7d-413e-986a-c767ea0632da
          description: TransactionGUID used to uniquely identify this specific Transaction
        name:
          type: string
          example: 1916 Glenarbor Way
          description: Name of the transaction file as it appears in the application
        statusId:
          type: string
          format: uuid
          example: 6d6d2bfe-b166-4f2c-9027-629f09a35b79
          description: TransactionStatusGUID. See Glossary for values.
        typeId:
          type: string
          format: uuid
          example: 2d9d021d-beb7-456d-9cae-6ce5486ac3f5
          description: TransactionTypeGUID. See Glossary for values.
        ownerId:
          type: string
          format: uuid
          example: 5ec37bc1-9f55-4fe2-b9c4-1072f9954312
          description: OwnerID of this Transaction File
        dateCreated:
          type: string
          format: date-time
          example: '2019-05-14T23:49:49.143+00:00'
        lastModified:
          type: string
          format: date-time
          example: '2019-05-14T23:49:52.27+00:00'
    TransactionDetails:
      type: object
      properties:
        property:
          type: object
          properties:
            streetName:
              type: string
              example: Wellington Rd.
            streetNumber:
              type: string
              example: '200'
            state:
              type: string
              example: 'ON'
            city:
              type: string
              example: London
            county:
              type: string
              example: Middlesex
            zipCode:
              type: string
              example: N6E 38B
            subDivision:
              type: string
              example: White Oaks
            lotNumber:
              type: string
              example: '8'
            block:
              type: string
              example: '20'
            pageNumber:
              type: string
              example: '5'
            platBook:
              type: string
              example: '33'
            yearBuilt:
              type: integer
              example: 1980
            schoolDistrict:
              type: string
              example: Aquinis School District
            zoningClass:
              type: string
              example: Residential
            taxNumber:
              type: string
              example: 112-1231-999
            township:
              type: string
              example: Essex
            legalDescription:
              type: string
              example: PL ; Lot ; Bl ; DL ; LD ; S ; Twn ; Rge ; M ; Lot A, Section
                75, Victoria District, Plan 42316
        listing:
          type: object
          properties:
            mlsNumber:
              type: string
              example: '421126'
            listPrice:
              type: number
              example: 200000
            expirationDate:
              type: string
              format: date-time
              example: '2012-04-23T18:25:43.51'
            propertyIncludes:
              type: string
              example: Dishwasher, Stove, Fridge
            propertyExcludes:
              type: string
              example: Washer, Dryer
            leasedItems:
              type: string
              example: Hot Water Tank
        purchase:
          type: object
          properties:
            purchasePrice:
              type: number
              example: 190000
            offerDate:
              type: string
              format: date-time
            offerExpirationDate:
              type: string
              format: date-time
            offerAcceptanceDate:
              type: string
              format: date-time
            applicationDate:
              type: string
              format: date-time
            approvalDate:
              type: string
              format: date-time
            depositAmount:
              type: number
              example: 50000
            additionalDepositAmount:
              type: number
              example: 10000
            additionalDepositDate:
              type: string
              format: date-time
            fundingDate:
              type: string
              format: date-time
            possessionDate:
              type: string
              format: date-time
            closingDate:
              type: string
              format: date-time
    Document:
      type: object
      properties:
        id:
          type: string
          format: uuid
          example: 805355ec-7f7d-413e-986a-c767ea0632da
          description: DocumentGUID
        fileTypeId:
          type: string
          format: uuid
          example: 6db4d39b-d96d-4cfd-b97e-0c9cd1a176f9
          description: File type GUID. See Glossary for values.
        documentName:
          type: string
          example: 1916 Glenarbor Way
        dateCreated:
          type: string
          format: date-time
          example: '2019-05-14T23:49:49.143+00:00'
        lastModified:
          type: string
          format: date-time
          example: '2019-05-14T23:49:52.27+00:00'
    DocumentWithBinary:
      allOf:
      - "$ref": "#/components/schemas/Document"
      - type: object
        properties:
          binary:
            type: string
            description: Base64 encoded document binary
            example: JVBERi0xLjQKJeLjz9MKMSAwIG9iago8PC9U....
    TransactionContact:
      type: object
      properties:
        id:
          type: string
          format: uuid
          example: 805355ec-7f7d-413e-986a-c767ea0632da
          description: ContactGUID
        transactionId:
          type: string
          format: uuid
          example: 34bfff2a-d186-48c6-b09d-6c15232cfe26
          description: TransactionGUID this contact is associated with
        preferredName:
          type: string
          example: Bobby Jones
          description: Preferred name; overrides firstName/lastName on real estate
            forms
        firstName:
          type: string
          example: Robert
        middleName:
          type: string
          example: P
        lastName:
          type: string
          example: Jones
        fullAddress:
          type: string
          example: 100 Wellington St.
          description: Street number and name
        city:
          type: string
          example: London
        state:
          type: string
          example: 'ON'
        zipCode:
          type: string
          example: N6E B3B
        phone:
          type: string
          example: 519-000-0000
        fax:
          type: string
          example: 519-000-0001
        cell:
          type: string
          example: 519-000-0002
        email:
          type: string
          format: email
          example: bobbyjones@fakeemail.com
        company:
          type: string
          example: Bobby Jones Real Estate
        typeId:
          type: string
          format: uuid
          example: 918753cd-df9d-4a8c-b9c5-2d0115835ea0
          description: Contact type GUID. See Glossary for values.
    ContactType:
      type: object
      properties:
        id:
          type: string
          format: uuid
          example: 3820856a-faef-477d-8d6a-8a8e25fc9522
          description: Unique identifier for this contact type
        name:
          type: string
          example: Listing Agent
        ownerId:
          type: string
          format: uuid
          example: 5ec37bc1-9f55-4fe2-b9c4-1072f9954312
          description: Owner of this type (Global, Association, Office, or Personal
            level)
        dateCreated:
          type: string
          format: date-time
          example: '2020-04-14T15:54:53.207'
        lastModified:
          type: string
          format: date-time
          example: '2020-04-14T15:54:53.207'
    TransactionType:
      type: object
      properties:
        id:
          type: string
          format: uuid
          example: 8bd47056-64b5-41dd-ad97-53f6a7debe80
          description: Unique identifier for this transaction type
        name:
          type: string
          example: Commercial Lease
        ownerId:
          type: string
          format: uuid
          example: 476ba212-d96d-49e5-82df-3f474d9e9188
          description: Owner of this type (Global, Association, Office, or Personal
            level)
        dateCreated:
          type: string
          format: date-time
          example: '2012-01-18T20:42:38.737'
        lastModified:
          type: string
          format: date-time
          example: '2012-01-18T20:42:38.737'
    TransactionStatus:
      type: object
      properties:
        id:
          type: string
          format: uuid
          example: ee349fd8-5842-420f-84a2-9b80b8d9632e
          description: Unique identifier for this transaction status
        name:
          type: string
          example: Active
        ownerId:
          type: string
          format: uuid
          example: 476ba212-d96d-49e5-82df-3f474d9e9188
          description: Owner of this status (Global, Association, Office, or Personal
            level)
        dateCreated:
          type: string
          format: date-time
          example: '2008-03-02T04:26:50.607+00:00'
        lastModified:
          type: string
          format: date-time
          example: '2008-03-02T04:26:50.607+00:00'
    SSOLink:
      type: object
      properties:
        link:
          type: string
          example: https://td2.transactiondesk.com/external/entry.ashx?i=28403062-47a4-4a7a-ae3d-b3f64decd32e
          description: One-time-use single sign on link
    Metadata:
      type: object
      properties:
        defaultTake:
          type: integer
          example: 10
          description: Default number of records returned when not using a filter
        maxTake:
          type: integer
          example: 100
          description: Maximum records returnable using the $take filter
        defaultOrder:
          type: string
          example: Name
          description: Default sort order
    MetadataProperty:
      type: object
      properties:
        name:
          type: string
          example: Id
          description: Attribute name returned in the payload
        type:
          type: string
          example: Guid
          description: Attribute type (Guid, String, DateTimeOffset, etc.)
        canFilter:
          type: boolean
          example: true
          description: Whether this attribute can be filtered
        canSort:
          type: boolean
          example: true
          description: Whether this attribute can be sorted
        filterType:
          type: string
          example: Equals
          description: Whether filtering does a contains search or exact match
    FormLibrary:
      type: object
      properties:
        folderId:
          type: integer
          example: 123
          description: Form-library folder identifier
        name:
          type: string
          example: State Forms
          description: Name of the form library folder
        description:
          type: string
          example: State form library
          description: Description of the form library folder
    FormLibraryForm:
      type: object
      properties:
        formLib:
          type: string
          example: ABC123
          description: Form identifier within the folder
        name:
          type: string
          example: Purchase Agreement
          description: Name of the form
        description:
          type: string
          example: Purchase Agreement form
          description: Description of the form
    TransactionForm:
      type: object
      description: |-
        Represents a form instance associated with a transaction.

        **Fields:**

        | Field | Type | Description |
        |---|---|---|
        | id | GUID | Transaction form instance identifier |
        | formName | string | Name of the form |
        | formLib | string | Form-library identifier |
        | dateCreated | DateTimeOffset | Creation timestamp |
        | lastModified | DateTimeOffset | Last modification timestamp |

        **Expected Identifiers:**

        | Identifier | Type | Description |
        |---|---|---|
        | transactionId | GUID | Transaction identifier |
        | id | GUID | Transaction form instance identifier |
        | formLib | string | Form-library identifier |
      properties:
        id:
          type: string
          format: uuid
          example: 7f0f7fc1-8a2f-4e3d-b23f-3b6d2f1f9a11
          description: Transaction form instance identifier
        formName:
          type: string
          example: Purchase Agreement
          description: Name of the form
        formLib:
          type: string
          example: ABC123
          description: Form-library identifier
        dateCreated:
          type: string
          format: date-time
          example: '2026-05-26T12:00:00Z'
          description: Creation timestamp
        lastModified:
          type: string
          format: date-time
          example: '2026-05-26T12:05:00Z'
          description: Last modification timestamp
paths:
  "/oauth/token":
    post:
      summary: Exchange for Access Token
      description: |-
        Exchange an authorization code or client credentials for a bearer access token.

        - Use `grant_type=authorization_code` along with the `code` and `redirect_uri` from the Authorization Code flow.
        - Use `grant_type=client_credentials` for the Client Credentials flow (no user redirect required).
      security: []
      tags:
      - Authentication
      requestBody:
        required: true
        content:
          application/x-www-form-urlencoded:
            schema:
              type: object
              required:
              - grant_type
              - client_id
              - client_secret
              properties:
                grant_type:
                  type: string
                  enum:
                  - authorization_code
                  - client_credentials
                  example: authorization_code
                client_id:
                  type: string
                  example: Lonewolf
                  description: Client ID provided by Lonewolf
                client_secret:
                  type: string
                  example: LonewolfSecret
                  description: Client Secret provided by Lonewolf
                code:
                  type: string
                  example: a29fc587-96f3-4fa2-a4ad-c42fef5141f7
                  description: Authorization code from step 3 (authorization_code
                    flow only). One-time use, expires in 10 minutes.
                redirect_uri:
                  type: string
                  example: https://www.example.com
                  description: Must match the redirect_uri used in step 1 (authorization_code
                    flow only)
      responses:
        '200':
          description: Access token issued successfully
          content:
            application/json:
              schema:
                type: object
                properties:
                  access_token:
                    type: string
                    example: eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9...
                  token_type:
                    type: string
                    example: bearer
  "/v2/transactions":
    get:
      summary: Get All Transactions
      description: Returns a full list of transactions owned by the authenticated
        user. Supports filter params ($orderDir, $skip, $take, $orderBy).
      tags:
      - Transaction Summary
      parameters:
      - in: query
        name: "$orderDir"
        schema:
          type: string
          enum:
          - asc
          - desc
        description: Sort direction
      - in: query
        name: "$skip"
        schema:
          type: integer
        description: Number of records to skip (pagination)
      - in: query
        name: "$take"
        schema:
          type: integer
          maximum: 100
        description: Number of records to return (max 100)
      - in: query
        name: "$orderBy"
        schema:
          type: string
        description: Field to order by
      responses:
        '200':
          description: List of transactions returned successfully
          content:
            application/json:
              schema:
                type: array
                items:
                  "$ref": "#/components/schemas/Transaction"
        '401':
          description: Unauthorized
          content:
            application/json:
              schema:
                "$ref": "#/components/schemas/ErrorUnauthorized"
    post:
      summary: Create a Transaction
      description: Creates a new transaction file in the authenticated user's account.
      tags:
      - Transaction Summary
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              required:
              - name
              properties:
                name:
                  type: string
                  example: Name of Property
                  description: Name of the transaction file
                typeId:
                  type: string
                  format: uuid
                  example: 805355ec-7f7d-413e-986a-c767ea0632da
                  description: TransactionTypeGUID. See Glossary for values.
                statusId:
                  type: string
                  format: uuid
                  example: 805355ec-7f7d-413e-986a-c767ea0632da
                  description: TransactionStatusGUID. See Glossary for values.
      responses:
        '200':
          description: Transaction created successfully
          content:
            application/json:
              schema:
                type: object
                properties:
                  id:
                    type: string
                    format: uuid
                    example: 805355ec-7f7d-413e-986a-c767ea0632da
        '401':
          description: Unauthorized
          content:
            application/json:
              schema:
                "$ref": "#/components/schemas/ErrorUnauthorized"
  "/v2/transactions/{id}":
    parameters:
    - in: path
      name: id
      required: true
      schema:
        type: string
        format: uuid
      description: TransactionGUID
    get:
      summary: Get a Specific Transaction
      description: Returns a specific transaction file owned by the authenticated
        user.
      tags:
      - Transaction Summary
      responses:
        '200':
          description: Transaction returned successfully
          content:
            application/json:
              schema:
                "$ref": "#/components/schemas/Transaction"
        '401':
          description: Unauthorized
          content:
            application/json:
              schema:
                "$ref": "#/components/schemas/ErrorUnauthorized"
        '404':
          description: Transaction not found
          content:
            application/json:
              schema:
                "$ref": "#/components/schemas/ErrorNotFound"
    patch:
      summary: Update a Transaction
      description: Updates part or all of a specific transaction file.
      tags:
      - Transaction Summary
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              properties:
                name:
                  type: string
                statusId:
                  type: string
                  format: uuid
                typeId:
                  type: string
                  format: uuid
      responses:
        '200':
          description: Transaction updated successfully
        '400':
          description: Bad request
          content:
            application/json:
              schema:
                "$ref": "#/components/schemas/ErrorBadRequest"
        '401':
          description: Unauthorized
          content:
            application/json:
              schema:
                "$ref": "#/components/schemas/ErrorUnauthorized"
        '404':
          description: Transaction not found
          content:
            application/json:
              schema:
                "$ref": "#/components/schemas/ErrorNotFound"
    delete:
      summary: Delete a Transaction
      description: Deletes a specific transaction file owned by the authenticated
        user.
      tags:
      - Transaction Summary
      responses:
        '200':
          description: Transaction deleted successfully
        '400':
          description: Bad request
          content:
            application/json:
              schema:
                "$ref": "#/components/schemas/ErrorBadRequest"
        '401':
          description: Unauthorized
          content:
            application/json:
              schema:
                "$ref": "#/components/schemas/ErrorUnauthorized"
        '404':
          description: Transaction not found
          content:
            application/json:
              schema:
                "$ref": "#/components/schemas/ErrorNotFound"
  "/v2/transactions/{id}/details":
    parameters:
    - in: path
      name: id
      required: true
      schema:
        type: string
        format: uuid
      description: TransactionGUID
    get:
      summary: Get Transaction Details
      description: 'Returns property details associated with a specified transaction
        file. Details are divided into three sections: property information, listing
        information, and sale/purchase information.'
      tags:
      - Transaction Summary
      responses:
        '200':
          description: Transaction details returned successfully
          content:
            application/json:
              schema:
                "$ref": "#/components/schemas/TransactionDetails"
        '401':
          description: Unauthorized
          content:
            application/json:
              schema:
                "$ref": "#/components/schemas/ErrorUnauthorized"
        '404':
          description: Transaction not found
          content:
            application/json:
              schema:
                "$ref": "#/components/schemas/ErrorNotFound"
    patch:
      summary: Update Transaction Details
      description: Updates part or all of the property details associated with a specified
        transaction file. You can update any combination of property, listing, and
        purchase fields.
      tags:
      - Transaction Summary
      requestBody:
        required: true
        content:
          application/json:
            schema:
              "$ref": "#/components/schemas/TransactionDetails"
      responses:
        '200':
          description: Transaction details updated successfully
        '400':
          description: Bad request
          content:
            application/json:
              schema:
                "$ref": "#/components/schemas/ErrorBadRequest"
        '401':
          description: Unauthorized
          content:
            application/json:
              schema:
                "$ref": "#/components/schemas/ErrorUnauthorized"
        '404':
          description: Transaction not found
          content:
            application/json:
              schema:
                "$ref": "#/components/schemas/ErrorNotFound"
  "/v2/transactions/{id}/documents":
    parameters:
    - in: path
      name: id
      required: true
      schema:
        type: string
        format: uuid
      description: TransactionGUID
    get:
      summary: Get All Documents
      description: Returns a full list of documents associated with a specific transaction.
      tags:
      - Transaction Documents
      parameters:
      - in: query
        name: "$orderDir"
        schema:
          type: string
          enum:
          - asc
          - desc
      - in: query
        name: "$skip"
        schema:
          type: integer
      - in: query
        name: "$take"
        schema:
          type: integer
          maximum: 100
      - in: query
        name: "$orderBy"
        schema:
          type: string
      responses:
        '200':
          description: List of documents returned successfully
          content:
            application/json:
              schema:
                type: array
                items:
                  "$ref": "#/components/schemas/Document"
        '401':
          description: Unauthorized
          content:
            application/json:
              schema:
                "$ref": "#/components/schemas/ErrorUnauthorized"
    post:
      summary: Upload a Document
      description: Uploads a new document to a specific transaction. The document
        binary must be Base64 encoded.
      tags:
      - Transaction Documents
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              required:
              - documentName
              - binary
              - fileTypeId
              properties:
                documentName:
                  type: string
                  example: Purchase Agreement
                binary:
                  type: string
                  description: Base64 encoded document binary
                fileTypeId:
                  type: string
                  format: uuid
                  description: File type GUID. See Glossary for values.
      responses:
        '200':
          description: Document uploaded successfully
          content:
            application/json:
              schema:
                type: object
                properties:
                  id:
                    type: string
                    format: uuid
        '401':
          description: Unauthorized
          content:
            application/json:
              schema:
                "$ref": "#/components/schemas/ErrorUnauthorized"
  "/v2/transactions/{transactionId}/documents/{documentId}":
    parameters:
    - in: path
      name: transactionId
      required: true
      schema:
        type: string
        format: uuid
      description: TransactionGUID
    - in: path
      name: documentId
      required: true
      schema:
        type: string
        format: uuid
      description: DocumentGUID
    get:
      summary: Get a Specific Document
      description: Returns the document binary of a specific file within a transaction.
      tags:
      - Transaction Documents
      responses:
        '200':
          description: Document returned successfully
          content:
            application/json:
              schema:
                "$ref": "#/components/schemas/DocumentWithBinary"
        '401':
          description: Unauthorized
          content:
            application/json:
              schema:
                "$ref": "#/components/schemas/ErrorUnauthorized"
        '404':
          description: Document not found
          content:
            application/json:
              schema:
                "$ref": "#/components/schemas/ErrorNotFound"
    patch:
      summary: Update a Document
      description: Updates the name of a specific document within a transaction.
      tags:
      - Transaction Documents
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              properties:
                documentName:
                  type: string
      responses:
        '200':
          description: Document updated successfully
        '400':
          description: Bad request
          content:
            application/json:
              schema:
                "$ref": "#/components/schemas/ErrorBadRequest"
        '401':
          description: Unauthorized
          content:
            application/json:
              schema:
                "$ref": "#/components/schemas/ErrorUnauthorized"
        '404':
          description: Document not found
          content:
            application/json:
              schema:
                "$ref": "#/components/schemas/ErrorNotFound"
    delete:
      summary: Delete a Document
      description: Deletes a specific document within a transaction.
      tags:
      - Transaction Documents
      responses:
        '200':
          description: Document deleted successfully
        '400':
          description: Bad request
          content:
            application/json:
              schema:
                "$ref": "#/components/schemas/ErrorBadRequest"
        '401':
          description: Unauthorized
          content:
            application/json:
              schema:
                "$ref": "#/components/schemas/ErrorUnauthorized"
        '404':
          description: Document not found
          content:
            applicat

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# Full source: https://raw.githubusercontent.com/api-evangelist/lone-wolf/refs/heads/main/openapi/lone-wolf-transactiondesk-api-openapi.yml