LeadDesk only offers access to their API in the Advanced & Enterprise plans, so starting at €129 per user per month, you can get access to their API.
Here at Myphoner, we take a different approach as we understand how powerful integrations can be. You can integrate with our partners (such as Zapier, Make or Zoho Flow) starting with our Basic plan.
If you want access to our API, you can simply work on our Plus or Premium plans, starting at $35 per month.