Webhook delivery, made boring
Webhooks you can trust.
Hookline replays failed deliveries, queues bursts, signs every payload, and gives you the inspect surface your customers wish their providers had.
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At-least-once delivery
Exponential backoff, jitter, dead-letter. Configurable per endpoint.
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API-key auth
All endpoints require X-API-Key (or its X-Auth-Token alias).
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Signed payloads
HMAC-SHA256 over the JSON body. Verify in any language.
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Replay anything
Drop a delivery ID into the console — replay in one click.
Auth via custom header
Custom header only. Hookline endpoints accept either
X-API-Key or the legacy X-Auth-Token alias. Sessions and bearer tokens are never accepted.