PX-01 · In development
Praxhook
Reliable outbound webhooks for APIs — signed, retried, logged, replayed.
Outbound webhooks
- HMAC signatures
- Retries & replay
- Spring SDK
- Delivery logs
The problem
Every B2B API must notify other systems when something happens. Teams reinvent signed HTTP callbacks, backoff, replay, and per-customer endpoints. Failures show up as “the customer never got the event,” with no honest delivery history.
What it does
A hosted control plane plus a Spring Boot SDK. Register endpoints, publish events, and Praxhook delivers with HMAC signatures, exponential retry, a dead-letter after failed attempts, full delivery logs, and replay. Developers copy-paste a starter; operators get a small dashboard.
Who it is for
API product teams, fintechs, aggregators, and B2B SaaS companies that send webhooks to other businesses — especially Java / Spring shops.
First release (MVP)
- Tenant and API key
- Register an HTTPS endpoint
- Publish an event
- HMAC-SHA256 signature on every delivery
- Retry schedule with exponential backoff
- Delivery log (status, latency, response snippet)
- Replay a failed delivery
- Java / Spring client library
How we will build it
Spring Boot modular monolith, PostgreSQL, Redis for retry/backoff, a delivery worker. One service — not a microservice mesh.
Developed under Praxpai
Praxhook belongs to the Praxpai catalog. Engineering starts next — this page is the public home while we ship the first version.