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EXA25

— Send data to a third party —

Privacy-Preserving Webhooks

SaaS webhooks deliver full event payloads to your endpoint — Polymonial wraps the payload so you unseal only the fields you actually need.

The problem to solve

SaaS platforms send webhook payloads with the full event object — payment-processor charge events carry full customer + amount + metadata; version-control PR events carry full diff content; e-commerce order events carry the customer's address and basket. Most consumers need only a few fields, but the entire payload sits in their server logs forever. Every breach of a webhook consumer exposes everything the platform has ever sent it.

The solution it enables

Emitter schema-wraps the webhook payload. Receiver subscribes to specific fields via the schema and unseals only those. Logs capture the receipt + the unsealed slice — not the full payload. Same HTTPS POST, same retry behaviour, same idempotency keys; just sealed contents.

What it looks like

A finance team builds a webhook consumer that listens to payment-processor charge events to reconcile bank deposits. The processor sends 47 fields per event; the team needs amount, currency, and a reference. Today the entire event sits in their request logs alongside customer email, card last-4, and metadata. After Polymonial: the webhook is sealed; their consumer's schema unseals only amount, currency, reference. The logs capture only those three fields. A breach of the log store exposes little else.

“The webhook delivers the answer. Your server log doesn't get the customer.”

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Who’s this for you?

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