NAIF FixGraph · Webhook Payload Tester
Webhook payload is not valid JSON
The payload cannot be parsed as JSON, so downstream webhook processing is likely to fail before business logic runs.
Aggregate badge appears at 5+ consented samplesProblem signature
INVALID_JSON
Likely causes
- Truncated or malformed request body
- Incorrect quoting or escaping
- Sender uses a different content format
What to check first
- Validate the exact safe sample before sending
- Check Content-Type and body encoding
- Log parse failures without storing secrets
This page is curated technical guidance, not a claim about any specific user's system. Diagnosis-derived trend badges are shown only after at least 5 consented, sanitized samples.