DOOM MCP vs Eden AI

Chris Nager built a fully playable DOOM that runs as an MCP (Model Context Protocol) app, rendering inline inside Claude and ChatGPT without a separate browser tab. The architecture uses two MCP tools — create_doom_session for inline-capable hosts and get_doom_launch_url as a browser fallback — combined with cloudflare/doom-wasm for the game runtime and a signed token system that maintains session state across both surfaces. The result is the same session whether you're playing inline or in a tab. The key technical challenge was avoiding iframe and CSP (Content Security Policy) issues. Rather than embedding a browser page inside the MCP iframe, the DOOM canvas runs directly inside the host's iframe — a subtle but critical distinction that resolved a class of rendering and input-handling bugs. The final implementation is intentionally stripped down: no save/load, no persistence adapters, just stable playable DOOM. Beyond the novelty, this project is a concrete demonstration that MCP apps are interactive surfaces, not just tool-calling JSON endpoints. The progressive enhancement pattern — same signed-token foundation serving both inline and browser modes — is a reusable architecture for any game or interactive experience that wants to live inside an AI assistant. Nager open-sourced the implementation and the blog post is a detailed technical breakdown.

Eden AI is a European AI API gateway providing access to 500+ AI models behind a single unified interface. Unlike OpenRouter or similar US-based routers, Eden AI's entire infrastructure runs in the EU, offering GDPR compliance, EU data residency, and governance features aligned with the European AI Act — critical for industries like finance, healthcare, and government that can't route sensitive data through US-hosted intermediaries. The platform goes beyond just LLM routing: it also unifies computer vision, OCR, speech-to-text, translation, NLP, and document processing across multiple providers — making it the most complete multimodal AI gateway available. Smart routing, fallback handling, and cost optimization are built in, so teams can swap providers without rewriting integration code. Pay-as-you-go pricing with no mandatory subscription makes it accessible to small teams. Eden AI has re-emerged as a notable option in April 2026 as GDPR enforcement ramps up and European enterprises face increased scrutiny over where AI inference happens. With the US-EU data transfer framework still uncertain, a first-party European AI gateway with deep compliance tooling fills a real market gap that US-founded competitors can't easily address.