Capabilities/Integrations

Webhook Delivery

Outbound webhook fan-out with HMAC signing, exponential-backoff retries, dead-letter queue, and per-endpoint health tracking. Customer-facing deliveries log including the response status + body for debugging. Sandbox keys for trial users, rate limits per workspace, no-PII logging by default.

2 projects and 12 packages carry this capability.

Projects

Inkwell — Form Submission API
2026-06-09
HTML form ingestion API with spam scoring, multi-destination fan-out (email/Slack/HubSpot/etc), and a 3 KB JS widget.
Webhook Relay
2026-06-07
Production-shaped webhook delivery API with HMAC signing, exponential backoff retries, dead-letter queue, and 4 language SDKs.

Packages (12)

@philiprehberger/dotnet-webhook-signature
dotnet
HMAC webhook signing and verification with replay prevention — supports SHA-256, SHA-384, and SHA-512.
@philiprehberger/go-webhook-relay-client
go
Go SDK + HMAC verifier for the [Webhook Relay API](https://webhook-relay.dcsuniverse.com). Go 1.22+, zero runtime dependencies beyond the standard library.
@philiprehberger/go-webhook-signature
go
HMAC-SHA256 webhook signature generation and verification with HTTP middleware for Go
@philiprehberger/kt-webhook-signature
kotlin
HMAC webhook signature creation and verification with timing-safe comparison.
@philiprehberger/php-webhook-relay-client
php
PHP SDK + HMAC verifier for the Webhook Relay API
@philiprehberger/webhook-signature
php
Minimal, framework-agnostic HMAC-SHA256 webhook signature generation and verification with replay attack prevention
@philiprehberger/py-webhook-relay-client
python
Python SDK + HMAC verifier for the Webhook Relay API
@philiprehberger/py-webhook-signature
python
HMAC-based webhook signature generation and verification with timing-safe comparison
@philiprehberger/rb-webhook-builder
ruby
Webhook delivery client with HMAC signing, retry, and tracking
@philiprehberger/rb-webhook-signature
ruby
HMAC-SHA256 webhook signing and verification with replay prevention
@philiprehberger/rs-webhook-signature
rust
HMAC-SHA256 webhook signing and verification for Rust
@philiprehberger/webhook-relay-client
typescript
TypeScript SDK + signature verifier for the Webhook Relay API