Durable before anything else
A request that reaches your ingest URL is written down before it’s verified or processed. A
bad signature, an unknown provider, or a downstream outage labels an event — it doesn’t discard
it.
At-least-once delivery
Outbound events are delivered at least once, with automatic retries on a fixed schedule and
dead-lettering when a receiver stays down — so a brief outage on your side doesn’t drop
events.
Retries that don't cost you
A delivery counts once, when first dispatched — however many retry attempts it takes. A
receiver’s downtime is never your cost.
Replay whatever you've captured
Every captured event stays replayable within your retention window
— recover from an outage by replaying, instead of asking the provider to resend.
webhook.co runs on a best-effort basis and doesn’t publish an uptime or service-level guarantee.
What it does provide is the durability model above: your captured events are safe to inspect and
replay, and delivery keeps retrying rather than dropping.
Related
Delivery, retries & signing
The retry schedule and dead-lettering in detail.
Delivery failures
When something doesn’t get through.