PhantomBuster API 'Argument too big' - feed large inputs via Google Sheet or CSV, not arrays

TL;DR

Hitting PhantomBuster's API with a big list of profiles in the payload gets you {status:error, error:'Argument too big'} - the API does not accept large arrays as arguments.

Fix

1. Hitting PhantomBuster's API with a big list of profiles in the payload gets you {status:error, error:'Argument too big'} - the API does not accept large arrays as arguments. Expected: you can confirm this matches your situation.

When to use

• You are dealing with this situation.
• The symptom matches: PhantomBuster API 'Argument too big' - feed large inputs via Google Sheet or CSV, not arrays.

When NOT to use

• Unrelated issues with a different cause.
• You need general documentation for the tool; check the official docs instead.

Compatibility

Reported per the linked source. Source: https://support.phantombuster.com/hc/en-us/articles/24248994798482-How-to-Use-Advanced-Settings-for-Phantoms-and-Workflo.

Variant phrasings

PhantomBuster API 'Argument too big' - feed large inputs via Google Sheet or CSV, not arrays

Why it happens

PhantomBuster support (answered on their LinkedIn Outreach page): launching a Phantom via API with a large list of profiles (~750) in the payload returns {"status":"error","error":"Argument too big"}. The cause: passing the profiles as an array in the API payload. The fix: use a Google Sheet or CSV as the Phantom's input instead of the array. To see the exact argument format the Phantom expects, open the Phantom's Setup, click the three dots in the top right, then 'Switch to JSON'.

Edge cases

• If your error message differs even slightly, this is probably a different issue; search the exact text.
• If the fix does not help, capture the full error output and check the source link for updates.

Source

https://support.phantombuster.com/hc/en-us/articles/24248994798482-How-to-Use-Advanced-Settings-for-Phantoms-and-Workflows

Source: PhantomBuster support (answered on their LinkedIn Outreach page): launching a Phantom via API with a large list of profiles (~750) in the payload returns {"status":"error","error":"Argument too big"}. The cause: passing the profiles as an array in the API payload. The fix: use a Google Sheet or CSV as the Phantom's input instead of the array. To see the exact argument format the Phantom expects, open the Phantom's Setup, click the three dots in the top right, then 'Switch to JSON'.

Verified resolution: Hitting PhantomBuster's API with a big list of profiles in the payload gets you {status:error, error:'Argument too big'} - the API does not accept large arrays as arguments. Point the Phantom at a Google Sheet or CSV instead and let it pull the input itself. If you are unsure of the argument shape, open the Phantom Setup, hit the three dots, and 'Switch to JSON' to see the exact format it expects.

Source URL: https://support.phantombuster.com/hc/en-us/articles/24248994798482-How-to-Use-Advanced-Settings-for-Phantoms-and-Workflows