Hey everyone, I’m stuck trying to do a batch upload of contacts to Hubspot using their CRM API. I’ve got a CSV file with test data (first name, age, phone, city, and website). My Python script is set up to send a POST request, but I keep getting a 415 error. Here’s what I’ve done so far:
Checked the file path (it’s in the same folder as my script)
Verified column mappings match my CSV headers
Double-checked the API key
Tried both CSV and XLSX formats
I’m pretty sure my code is close, but something’s off. The Hubspot docs don’t have a working example, so I’m kinda lost. Any ideas what I might be missing? I can share my code if that helps. Thanks in advance for any tips!
I encountered a similar issue when working with Hubspot’s CRM API for bulk uploads. One often overlooked aspect is the request structure. Ensure you’re sending the data as a JSON array of objects, not just a CSV string. Each object in the array should represent a contact with properties matching Hubspot’s expected format.
Also, check your API endpoint. For bulk operations, you should be using the ‘/bulk/v1/imports’ endpoint, not the standard contacts endpoint. This distinction is crucial for batch processing.
Lastly, implement error handling in your script to catch and log specific error messages. This can provide more detailed information about what’s causing the 415 error, which typically indicates an unsupported media type. With these adjustments, you should be able to resolve the issue and successfully upload your contacts.
I’ve been through this headache with Hubspot’s bulk upload API. One thing that tripped me up was the file size limit. Make sure your CSV isn’t exceeding 1MB - I had to split mine into smaller chunks. Also, double-check that your column names in the CSV exactly match Hubspot’s property names. Even a slight mismatch can cause issues.
Another tip: try using the Hubspot CLI tool for troubleshooting. It helped me pinpoint where things were going wrong. And don’t forget to URL encode any special characters in your data.
If all else fails, their support team is surprisingly responsive. They helped me debug a particularly tricky issue with custom properties. Hang in there - once you get it working, it’s a real time-saver!
hey alexj, had similar issues. check ur content-type header. make sure it’s set to ‘application/json’ not ‘text/csv’. also, try converting ur csv to a json payload before sending. that fixed it for me. good luck!