Hello,
currently i am working on one project and i need the suggestions.
Fetch data from API and store in CMS. Auto call this process, like need automation.
can possible in webflow ? or any other suggestions ?
Look into the Webflow API for you CMS add/edit/delete functionality.
Depending on where your data is, you might also look at Whalesync and Power Importer Pro.
fetch data using API and i have test with postman. and can i store in CMS ?
can possible in webflow ?
suggestions ?
or any steps or reference links ? Which I can consider.
Read Webflow’s API docs for details on the API and how to work with the CMS.
I don’t know anything about your other API you’re pulling data from.
Postman is primarily a testing tool, I’m not sure what you mean by postman API, but any form of automation platform like Make, Zapier, Pipedream, n8n would work if you have well built, well documented APIs.
client give me one external API and i need to fetch this API data in CMS.
how can i do it ?
You will need to hire a programmer who can build a connection for you, or possibly use an automation platform. It depends on how/when the data will be updated and how you will know it’s updated, how often you need to update, how quickly you need to update, what type of content you’re updating… many things.
automation platform like Zapier, Pipedream, n8n ???
can you some other suggestions to me ?
I don’t know what you’re asking
If you want to use an automation platform, these are the 4 suggestions I gave.
These are roughly in order from easiest/simplest to more powerful/complex.
Good luck! I think you have a lot of learning ahead. 
You can totally automate that process. But Webflow might not be the best choice since it’s more about building websites. Instead, check out tools like Zapier or Integromat.