Why does my API reject valid-looking epoch timestamps?
Most failures come from unit mismatch. The client sends milliseconds while the server expects seconds, or the reverse. Normalize input to one unit before validation.
EpochConverter API Timestamp Troubleshooting (2026)
If you searched for epochconverter api timestamp, you are usually dealing with failing webhook signatures, rejected request windows, or stale-event filters. In 2026, the fastest fix path is to validate three things in order: epoch unit, UTC alignment, and replay-window policy. Most production incidents happen when different services silently mix 10-digit seconds and 13-digit milliseconds.
Keep timestamp checks deterministic: parse incoming values, normalize them to a single internal unit, and log raw plus normalized values on every rejection path. This makes API debugging faster during incident response and prevents false positives in fraud and authentication controls.
Quick 2026 troubleshooting flow
- Check digit length at ingestion (10 for seconds, 13 for milliseconds).
- Normalize timestamps to one internal unit before any time-window compare.
- Enforce UTC-only comparisons for signatures, TTL checks, and replay guards.
- Log rejection reason with raw value and parsed unit for fast incident triage.
Related EpochConverter pages
Start with API timestamp reference, then review request examples and request-signing patterns.
To inspect live values while debugging payloads, use the main epoch converter tool.
Related developer tool
If this timestamp check runs on a schedule, validate expression syntax with Cron Expression Builder.
Frequently Asked Questions
How do I quickly detect seconds vs milliseconds?
Use digit length as the first check. Seconds are typically 10 digits and milliseconds are typically 13 digits. Then convert and validate against your acceptance window.
Why do timestamp signatures fail intermittently?
Intermittent failures usually mean clock skew between systems or too narrow a replay window. Keep servers NTP-synced and allow a small UTC skew tolerance.
Should APIs compare timestamps in local time?
No. Always compare in UTC and only format local time for UI display. UTC-only validation prevents timezone and daylight-saving bugs.