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Den Delimarsky

Tinkerer, Nerd, Pixel Geek.

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Halo: Campaign Evolved's Secret Difficulty Modifiers

The Difficulty Modifiers menu in Halo: Campaign Evolved gives you five dropdowns. The player traits system behind it has twelve fields - two whole categories the menu never shows, plus four more hidden inside the two it does. Here is how to reach them from a config file, with the complete list of accepted values for every trait.

Unlocking The Halo: Campaign Evolved Secret Debug Menu

Halo: Campaign Evolved still has its developer debug menu built into the retail release. It’s simply disabled through some game parameters you can re-enable it in just a few seconds and tinker with the content.

MCP Apps And Interactive UIs In MCP Clients

Arguably, the first of many exciting chapters in MCP development this year - the ability to render user interfaces within the chat experience. Finally, we’re going beyond just text.

Programmatically Setting GitHub Issue Types

A quick guide on how to programmatically set the GitHub issue type with the GitHub CLI, even if built-in functionality for this doesn’t quite exist.

Hello, Anthropic

Kickstarting 2026 with a new role as a Member of Technical Staff at Anthropic, where I will be helping grow the MCP ecosystem.

Wrapping Up My Latest Microsoft Chapter

As 2026 rolls in, it’s time for me to turn the page to a new adventure. This also means that it’s a wrap on my current career chapter at Microsoft.

Wrapping Up 2025 - The Year Of MCP

The past year has, arguably, been all about Model Context Protocol. This is a reflection on the past twelve months, and an outlook on the year to come.

November 2025 Reading List

A summary of all the books I’ve managed to read in November of 2025.

Dissecting The Halo 5 Spartan Rank Manifest

Did you know that Halo 5 had an entire API endpoint that defined the Spartan Rank progression? You do now - here is what it had inside.

One Year Of Model Context Protocol Through A Core Maintainer Lens

Model Context Protocol is a year old today. Along with its birthday, we’re also celebrating the release of the 2025-11-25 spec version.

What's New In The 2025-11-25 MCP Authorization Spec

Get a sneak peek on what’s changing in the new authorization specification for MCP that will land with the new spec release.

Halo World Championship 2025

The family tradition of attending every Halo World Championship continued in 2025, an extra special year because of the last HCS installment on top of Halo Infinite.

Support For CIMD For MCP In Visual Studio Code

A quick overview of the upcoming change to the MCP specification that introduces support for Client ID Metadata Documents (CIMD), and how it will be supported in Visual Studio Code.

You Need To Become A Full Stack Person

AI tools are commoditizing single-skill roles. The future belongs to people who can think, build, and ship across the entire stack.

What's The Deal With GitHub Spec Kit

Get to know the latest open source toolkit from GitHub that allows you to use Spec-Driven Development in any AI coding agent.

The MCP Maintainers Meet In New York

A quick overview of the MCP maintainer meetup in New York and what came out of it.

Is A Shell All You Need?

Why shell-first AI workflows combined with guardrailed MCP might just be the pragmatic path forward.

Visual Studio Code And The MCP Installation Prompt

The latest version of Visual Studio Code Insiders now shows a prompt before you bring in a third-party MCP server. Neat! No more one-click command execution.

OAuth In The MCP C# SDK: Simple, Secure, Standard

The official MCP C# SDK now supports OAuth 2.0 authentication and RFC 9728 Protected Resource Metadata, making secure AI integrations simpler for .NET developers.

Stop Guessing: MCP Elicitations Come To Visual Studio Code

Tired of agents making wrong assumptions about user input? Visual Studio Code now supports MCP elicitations, where servers can request structured input through the client’s native UI, completely eliminating guesswork and tedium of interpreting LLM input.