Are you trying to integrate AEM with DTM? If so, have a look at our help article here and let me know if you have questions.
If you are not integrating AEM with DTM, the previous answer is correct. DTM has no public facing API endpoint.
I am integrating AEM with DTM and to do that I need the API Token. Under DTM Account I do not see the API Token field. Can you please generate or help me find a way to get the API token?