ALPHA

Webhooks that never fail.
Cryptographically proven.

View Source

Zero Data Loss Guarantee

Kapsel records every delivery attempt in tamper-proof Merkle trees with Ed25519 signatures. Built for mission-critical systems where failure isn't an option.

Anatomy of a Delivery Proof
This is a real, cryptographically-signed record of a delivered webhook. Edit any field to see the signature break in real-time.
URL Time Status Hash Signature Verification ✓ Verified