Merge offers a Unified API that allows users to integrate various ticketing and project management applications, such as Linear, into their products. Linear is a robust ticketing and project management platform that can be enhanced through such integrations, providing additional value by connecting with other applications used by clients. To integrate with Linear, users need to access their unique API key, which involves a straightforward process of creating an account, navigating workspace settings, and generating the key. Linear provides several self-serve pricing plans with varying features and imposes different rate limits based on authentication methods used. Merge's platform facilitates these integrations and offers solutions for managing customer integrations more broadly, emphasizing its role as a comprehensive integration platform beyond just a Unified API product.