> ## Documentation Index > Fetch the complete documentation index at: https://thehyperstack.com/docs/llms.txt > Use this file to discover all available pages before exploring further. # API Overview > Welcome to the Hyperstack Developer program! This document describes how 3rd party applications can integrate with thehyperstack.com Below are the index for API references: Verify your API token and retrieve basic account information. Create a new credential group to organize credentials by program or course. Update the title, description, templates, or other settings of an existing credential group. Retrieve details of a specific credential group by its key. Retrieve all credential groups in your organization with pagination. Search and filter credential groups by title or keyword. Issue and immediately publish a new credential to a recipient. Create a credential in draft state without publishing it immediately. Publish a credential that is currently in draft state. Retrieve details of a specific issued credential by its ID. Update the expiry date of an existing credential. Search and filter credentials by recipient, group, date range, or custom attributes. Retrieve all credentials issued by your organization with pagination. Update custom attribute data for an existing recipient. Register a webhook URL to receive real-time event notifications. Remove your organization's existing webhook subscription.