TransactionDesk Partner API
2.0

Add MCP server to your AI tool

Allow AI tools and LLMs to interact with the API documentation portal through MCP.

MCP server URL

https://apidocs.lwolf.com/doc/transactiondesk-api/mcp

Standard setup for AI tools providing an mcp.json file

mcp.json 
{
  "TransactionDesk API MCP server": {
    "url": "https://apidocs.lwolf.com/doc/transactiondesk-api/mcp"
  }
}
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Base URL 
https://api.pre.transactiondesk.com

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
  • 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

This is version 2.0 of this API documentation. Last update on Jun 10, 2026.