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Notes from building real things

Web, React and Next.js, AI and RAG, and mobile. Written from production work, not tutorials about tutorials.

Shipping Your First MCP App: Rendering Interactive UI Inside Claude and ChatGPT (SEP-1865)

An end-to-end guide to building your first MCP App: declaring a UI resource, the sandboxed-iframe security model, routing UI actions through the same audited tools/call path, and what changed when Apps became an official extension in the 2026-07-28 spec.

Jul 6, 2026· 10 min read

Shipping Your First MCP App: Rendering Interactive UI Inside Claude and ChatGPT (SEP-1865) - article cover

MCP & Agent Protocols

Migrating Your Remote MCP Server to the Stateless 2026-07-28 Spec: A Field Guide

The 2026-07-28 MCP spec makes remote servers stateless by default. Here is how I drop the initialize handshake, remove the Mcp-Session-Id header, move sticky-session servers behind a plain round-robin load balancer, and survive the Tier-1 SDK gotchas inside the validation window.

Jun 11· 9 min read

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