Authentication Overview

Getting Your API Key

All Relayhook API requests require authentication using an API key. To get your API key:

  1. 1Visit relayhook.com and sign in to your account
  2. 2Your API key will be displayed on your dashboard
  3. 3Copy the key and use it in your API requests as a query parameter

Using Your API Key

Include your API key as a query parameter called apiKey in your requests:

Example
https://zaphook-responder.herokuapp.com/api/usage?apiKey=YOUR_API_KEY

⚠️ Security Warning

Never expose your API key in client-side code or public repositories! Always keep it secure and use it only in server-side applications.

Custom Headers & Authentication Data

Note: When configuring custom HTTP headers in Relayhook actions (including via Zapier), header values may contain sensitive authentication data such as API keys, bearer tokens, or session credentials. Treat all header values with the same care as passwords. Relayhook relays header data in transit over TLS and does not persist it.

💡 Quick Start

Get your API key from your dashboard:

Go to Dashboard