Zero-Trust Encrypted Webhook Relay

NEXUSBROKER

End-to-end encrypted webhook relay with FIFO queues.
Your data, encrypted. Always.

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The Problem

Webhooks Were Never Built for Sensitive Data

01

Your data passes through third-party servers in plaintext

Every webhook you receive is an unencrypted POST hitting your infrastructure. Headers, payloads, secrets — all visible to anyone in the middle. You're trusting every network hop.

02

No guarantee of delivery, no retry logic, no dead letter handling

Webhooks are fire-and-forget. If your server is down, the data is gone. No retries. No queue. No way to recover. One network blip and you've lost a payment notification.

03

Every webhook endpoint is an exposed attack surface

Each endpoint is a public URL accepting arbitrary POST requests. No authentication standard. No payload verification. DDoS, replay attacks, and injection are all unchecked.

Service(Stripe, GitHub…)NETWORKplaintextYour Server(exposed endpoint)no encryptionno retry logicTRUSTING THE WIRE — every hop is an attack surface
The Solution

Your Data. Your Keys. Our Infrastructure.

External Service
Sends webhook
Stripe, GitHub, Twilio, or any HTTP client. Sends a standard POST request with JSON payload.
POST /wh/{slug}
Nexus Broker
Encrypts + Queues
Receives plaintext, immediately encrypts with YOUR public key, queues in FIFO. Broker never stores or sees decrypted data.
RSA-2048 + AES-256-GCM
Consumer (You)
Decrypts with private key
Dequeue locked messages, decrypt with your private key (which never leaves your infrastructure), ACK/NACK explicitly.
YOUR private key
External ServicePOST /wh/{slug}plaintext payloadPOSTNEXUS BROKEREncryptFIFO QueueStore encryptedRSA-2048AES-256DEQUEUEConsumer (You)Decrypt with YOURprivate keyINGESTPlaintext received via POSTENCRYPTQUEUEDELIVERBROKER CANNOT READ YOUR DATAzero-trust · zero-knowledge · end-to-end encrypted
TRUST MODEL
Broker holds public key only
Encryption happens at ingest, before queuing
Decryption happens client-side only
Security

Built for Compliance. Zero Trust by Design.

End-to-End Encryption

RSA-2048 / X25519 + AES-256-GCM. Payloads encrypted before they hit the queue.

Zero Knowledge

We never have your private key. We never see plaintext. We can't read your data even if compelled to.

SOC 2 Ready

Audit logging, role-based access control, encryption at rest and in transit. Built for compliance.

FIFO Queues

Explicit lock + manual ACK/NACK. Dead letter handling. No message loss. No out-of-order delivery.

User-Managed Keys

Generate keypairs in-browser or upload your own. Broker stores only public keys. You keep the private half.

Text-Only Policy

Binary payloads rejected. Size limits enforced per webhook. Schema validation on ingest.

API

Three Endpoints. Total Control.

Request
curl -X POST https://nexus-broker.dev/api/webhooks \
  -H "Authorization: Bearer nxb_k8x2...f9a1" \
  -H "Content-Type: application/json" \
  -d '{
    "name": "Stripe Payments",
    "publicKey": "-----BEGIN PUBLIC KEY-----\nMIIBIjANBg...",
    "keyType": "rsa-2048"
  }'
Response · 200 OK
{
  "id": "wh_a1b2c3d4e5f6",
  "slug": "a1b2c3d4",
  "name": "Stripe Payments",
  "keyType": "rsa-2048",
  "createdAt": "2026-05-24T00:00:00Z"
}