Webhook Security — Proposed Guide

Planned API — Reference Only

Webhook Security: Secure consumption would require origin verification, scoped event handling and careful treatment of untrusted payloads. A valid…

Overview

Secure consumption would require origin verification, scoped event handling and careful treatment of untrusted payloads. A valid signature does not make every downstream action authorized.

Key concepts

Restrict receiver exposure, validate schema and apply resource-level business checks. Avoid forwarding secrets in event metadata.

Implementation considerations

No security control is installed by this page. Do not allow a received event to initiate money movement without separately approved financial controls.

Illustrative data model

This local fixture shows a possible representation for the concepts above. It is not an endpoint response, production configuration or a claim that the described capability is implemented.

JSON fixture

Fictional concept fixture

{
  "reference_only": true,
  "topic": "Webhook Security",
  "event_type": "expense.updated",
  "organization_id": "org_example_123",
  "schema_version": "preview-1"
}

Design review checklist

Document which organization owns the webhook security representation and which actor may view or change it.
Test the boundaries of event type, organization id, schema version using synthetic values, including missing or inconsistent references.
Before future implementation, obtain an approved contract and review failure behavior. This documentation does not authorize production activation.

Proposed data types

Illustrative field dictionary
Name	Type	Description
event_type	string	Illustrative business-fact name, not an instruction to move funds.
organization_id	string	Stable fictional organization reference; not a secret and not evidence that a resource exists.
schema_version	string	Proposed event schema revision, independent of transport delivery attempts.

Webhook Signatures

Webhooks & Events

Webhook Retries