I’m working on integrating a cryptocurrency API with Zapier and need to extract only specific data fields from the response. The API returns a lot of information but I only want the trading volume numbers.
I’ve attempted different query parameters like ?fields=[volume] and ?select=volume but the API keeps returning the complete dataset instead of just the filtered results I need.
Has anyone successfully filtered API responses in Zapier to get only certain fields? What’s the correct syntax for limiting the data returned from a REST endpoint?
First, check if your crypto API even supports field filtering - most don’t. I hit this same wall with CoinGecko’s API. No matter what parameters I threw at it, it kept dumping everything back at me.
Here’s what actually worked: use Zapier’s Formatter tool after your API call. Set up your webhook or API request normally to grab the full response, then add a Formatter step. Use ‘Pick off a child key’ to pull just the volume data.
If you need more control, go with the Code step instead. Just write a quick JavaScript snippet that parses the response and spits out only the volume field. Honestly, this approach beats relying on API filtering anyway - you’ve got complete control over how the data gets transformed.
been there! zapier’s webhooks tool is ur friend here. set up the webhook to catch the full api response, then use path mapping to grab just the volume field. something like steps.webhook.volume should work. don’t waste time trying to make the api filter - just let zapier do the heavy lifting after it receives everything.
Most crypto APIs don’t let you filter fields through query parameters like that. The filtering happens in Zapier after it gets the full response. In your action step, look for ‘Custom’ or ‘Filter’ options where you can map just the fields you want. For the response data, you’ll access volume using dot notation like data.volume or response.volume depending on how the API structures things. I’ve found Zapier’s built-in data tools work way better than trying to filter at the API level. Still worth checking the API docs though - some use different parameter names like ‘fields’ or ‘include’ instead of standard query syntax.