Core Concepts

Before diving deeper, familiarize yourself with the key concepts behind HookNexus.

Endpoints

An endpoint is a unique public URL that receives webhook requests on your behalf.

https://api.hooknexus.com/h/{endpoint-id}

Property	Free (typical)	Plus (typical)
Validity	24 hours from creation	30 days
Permanent slots	0	1
Max active endpoints	3	10

When you create an endpoint, HookNexus generates a UUID-based ID. Any HTTP request sent to this URL is captured, stored, and shown in your dashboard in real time.

Webhook Requests

Every HTTP request that hits your endpoint URL is a webhook request. HookNexus captures and stores:

• HTTP method — GET, POST, PUT, PATCH, DELETE, HEAD
• Headers — All request headers
• Query parameters — Parsed from the URL
• Body — Raw body content (JSON, XML, form data, or plain text)
• Metadata — IP address, content type, size, timestamp

Note

Maximum body size depends on your plan (for example 64 KB on Free and 512 KB on Plus in the current product). See Pricing.

Real-time Monitoring

The dashboard keeps a live connection so new requests appear as soon as they are captured—no polling.

Plus users can also subscribe with an API key over WebSocket from scripts or servers. See API keys.

Signature Verification

Many services (Stripe, GitHub, Shopify, Slack) sign their webhook payloads with HMAC. HookNexus includes a Signature Verification tool and APIs to check signatures against your secret.

Plus adds advanced verification modes where your plan includes them.

API Keys

API keys (Plus) let you open a WebSocket stream for an endpoint without using the browser. Create and revoke keys in Settings in the web app.

const ws = new WebSocket(
  `wss://api.hooknexus.com/ws/${endpointId}?apikey=${apiKey}`
);

Tip

Free includes 0 keys; Plus includes 1 by default. See API keys and Pricing.

Subscription Plans

	Free	Plus
Active endpoints	3	10
Requests / day	100	5,000
Log retention in app	24 hours	30 days
API key	—	✓

See Pricing for the full comparison.