Invalid JSON body
How to fix the Scrnpix API error when the request body contains malformed or invalid JSON.
When Does This Happen?
This error occurs when a POST endpoint expects a JSON request body but receives content that cannot be parsed as valid JSON. This applies to billing endpoints (/checkout/session, /subscription/change/preview, /subscription/change) and playground endpoints (/playground/screenshot, /playground/animate). Note that /screenshot and /animate use query parameters, not request bodies.
Reproduce This Error
curl -X POST -H "Cookie: session=your-jwt" \
-H "Content-Type: application/json" \
-d '{invalid json}' \
"https://api.scrnpix.com/checkout/session"{"error": "Invalid JSON body"}How to Fix
- 1Validate your JSON syntax using a JSON linter before sending
- 2Set the Content-Type header to application/json
- 3Ensure all strings are double-quoted (JSON does not allow single quotes)
- 4Check for trailing commas, which are not valid in JSON
Correct Request
curl -X POST -H "Cookie: session=your-jwt" \
-H "Content-Type: application/json" \
-d '{"planId": "STRIPE_PRICE_BASIC"}' \
"https://api.scrnpix.com/checkout/session"{"url": "https://checkout.stripe.com/..."}Related Errors
Frequently Asked Questions
Do the /screenshot and /animate endpoints require a JSON body?
No. The /screenshot and /animate endpoints accept all parameters as query strings on GET requests. Only POST endpoints like /checkout/session and /subscription/change require a JSON request body.
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