Elden FAQs

Question 1

What is Elden and what problem does it solve?

Accepted Answer

Elden is a developer tool that enables remote execution of Model Context Protocol (MCP) tools, bridging server-side applications with client-side logic via Socket.IO. It solves the challenge of running client-specific functions (like browser pop-ups) that generative AI agents typically need for advanced UI interactions, but are unavailable on the server.

Question 2

How does Elden facilitate client-side tool execution from a server?

Accepted Answer

Elden 'lifts' server-side tool functions that require a client context, replacing them with automatic RPC calls over Socket.IO. The server forwards the execution request to the connected client, which runs the logic and returns the result, making seamless server-client tool interaction possible.

Question 3

What are the core technologies powering Elden?

Accepted Answer

Elden is built on a modern stack including Socket.IO for real-time communication, the MCP SDK for tool definition, Next.js for end-to-end server and client components, and Better-Auth for OIDC authentication. It leverages TypeScript for type safety and Zod for schema validation.

Question 4

What authentication mechanism does Elden use?

Accepted Answer

Elden enforces robust security through OpenID Connect (OIDC) authentication. It validates JWT tokens to ensure authenticity and securely associates each request with authenticated users and their specific Socket.IO connections, allowing one socket connection per valid JWT.

Question 5

What are the key benefits of using Elden for developers?

Accepted Answer

Developers benefit from Elden's ability to unlock complex generative UI scenarios requiring client-side interactions, its secure OIDC authentication, automatic RPC call generation, and its complete end-to-end solution for integrating and executing MCP tools across server and client environments.

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