Playground API v3 Adds GraphQL Gateway, JWT Auth Simulation, and TypeScript SDK Support

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Playground API has launched version 3.0, upgrading the zero-config mock API tool into a multi-protocol developer testing platform. The update introduces a native GraphQL Gateway that supports stateful queries and mutations within session sandboxes, eliminating the need for a local Apollo Server setup. A dedicated JWT Auth Simulation endpoint now allows developers to test login flows, token refresh cycles, and protected routes using signed access and refresh tokens. Dynamic Custom Collections let developers create and manage domain-specific mock data — such as products or orders — on the fly without being limited to default entity types. The release also includes full TypeScript SDK definitions, dynamic SVG avatar generation, and builds on earlier v2 features like network latency simulation and OpenAPI exports.

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