To invoke the Salesforce Prompt Templates using REST API, we have to make use of Salesforce Connect API.

Sample Salesforce Prompt Template:

Prompt Template Instruction Used:

Your role is to parse the {!$Input:strRequest} and extract the first name, last name and email. The extracted information should be returned in JSON Format with firstName, lastName and emailAddress.

Syntax:

https://{Your Domain URL}/einstein/prompt-templates/promptTemplateDevName/generations

Sample API Request

Sample Request Body Used:

{
  "isPreview": "false",
  "inputParams": {
    "valueMap": {
      "Input:strRequest": {
        "value": "Admin User, [email protected]"       
      }
    }
  },
  "additionalConfig": {
      "applicationName": "PromptBuilderPreview"
  }
}

Developer Article:

https://developer.salesforce.com/docs/atlas.en-us.chatterapi.meta/chatterapi/connect_resources_prompt_template.htm