Is there a way that we can find the average response time for forum threads via the API?

Yes, this can be done via the API. Before delving into that route though, be sure to check if the Reporting section has what you're looking for. Forums Summary has an overview of the activity per forum, and you can drill in to see Average Response Times and other metrics.

If you do decide to roll your own report, this might work best as a scheduled job that calculates these values. I don't know how your products are delineated, but if for example they each had their own forum, you could:

• For each product forum, sequentially list forum threads
• For each thread, sequentially list replies - could filter by verified or non-verified (suggested) answers
• Calculate difference between thread create date and reply date of verified reply (or whatever type you are measuring)
• Grab whatever other metrics you'd like along the way, for example total threads, avg number of replies per thread, etc

Hi Steven, 

Thanks for your answer. I've shared the two documents with our data analytics team. I will let you know if we have any questions.

Hi Steven,

Thanks for the reply! At current, we are using python script to access the data now. Could you please share us the specific urls  to get the data? I see most of the APIs you share are in progress now.

There are also corresponding REST endpoints:

 Forum Thread REST Endpoints  

 Forum Reply REST Endpoints 

Thank you, Steven. Is there a feature to detect verified answers? We don't know of a specific API for that so curious if there is a feature. 

Yes, check the ForumReplyQueryType for Forum Reply List REST endpoint.