User Guides

Billing and Subscriptions

Manage subscriptions, payment method information and discounts using REST APIs.

Products

Manage products in the catalog by defining product information, editions and pricing plans using GraphQL APIs.

Users and Accounts

Manage users, companies, and memberships in your marketplace including user roles and permissions.

API Authentication

Our APIs use an OAuth-authenticated interface that facilitates secure data access by partners and developers.

View all >

APIs and References

GraphQL API Reference

Explore the reference documentation to learn more about the queries and mutations currently available within the AppDirect GraphQL API.

REST API Reference

See examples of how to perform different tasks, like user and company management or billing and subscription management.

AI APIs

Customize, integrate, and extend AIs for your organization and customers via industry-standard APIs

LLMs.txt

Provides LLM-friendly documentation to help AI tools like Cursor understand and work with the AppDirect Developer Portal content.

View all >

Developer Tools

GraphQL Explorer

Quickly write, validate, and test GraphQL queries for AppDirect APIs

GraphQL Schema Introspection

Query the schema to discover available queries, mutations, subscriptions, types and fields in our GraphQL API.

Demo GraphQL API Explorer

Check out the demo explorer tool by running queries using sample data.

View all >

Storefront Theming

Getting Started

Learn to modify elements of Plaza, our default theme, to customise components for storefront display including homepage and product profiles.

How to Guides

Everything you need to know about customizing styles, meta tags, creating a header and footer, or localising, uploading and publishing your theme.

Storefront Toolkit

Check out the demo explorer tool by running queries using sample data.

Overview >

Webhooks

Dlc Boot Runtime Error 75 |best| Jun 2026

Use a separate USB device: Attempt utilizing a different USB stick or re-formatting the current one. Contact support

Corrupted or missing system files Inaccurate configuration preferences Conflicts with other applications or drivers Troubles with the USB device or its formatting dlc boot runtime error 75

Solutions to Resolve the DLC Boot Runtime Error 75 If the troubleshooting actions cannot fix the issue, try these solutions: Use a separate USB device: Attempt utilizing a

Conclusion The DLC Boot Runtime Error 75 can be a annoying problem, but it’s typically resolvable with the correct troubleshooting steps and solutions. By understanding the causes of the error and following the steps outlined in this article, you should be able to fix the matter and get back to using DLC Boot without problems. If you’re still experiencing issues, don’t hesitate to seek further assistance. re still experiencing issues