Github-Copilot on Agentic Engineering in Action (agentprose demo)

Giving AI agents a real computer

Thu, 23 Jul 2026 06:32:10 +0000

How I built Sandcastle on the new GitHub Copilot provider for Microsoft Agent Framework — and what the feature actually unlocks

▶️ Live demo: https://sandcastle.isainative.dev

Most “AI app” demos boil down to the same thing: a prompt goes in, a wall of text comes out, and you still have to copy it, run it, fix the three things that don’t compile, and host it. The GitHub Copilot provider for Microsoft Agent Framework flips that: instead of returning text about code, an agent gets a real, sandboxed computer — it can run shell commands, read and write files, fetch URLs, and call MCP servers — and it uses that computer to actually build and run the thing you asked for.

You can't tune what you can't see: prompt‑cache observability for GitHub Copilot with OpenTelemetry

Wed, 08 Jul 2026 12:42:31 +0000

Open VS Code, ask Copilot Chat one question, and if you crack open the debug view you can watch prompt‑cache tokens tick past for that single call. That’s exactly enough visibility for one developer, on one machine, for one prompt. It stops being enough the moment you want to answer a sharper question:

Design, but with tests: an engineering approach to UX with Impeccable

Wed, 01 Jul 2026 14:50:55 +0000

Impeccable — now built into the GitHub Copilot app — treats design quality the way we treat code quality. This is what that looked like on a real app that was already shipping.

We have version control, code review, linters, profilers, and prioritized backlogs for our code. For the design of the things we build, most of us have “looks good to me.” This is the story of what happened when I closed that gap — by pointing a skill at my aurora app that brings an engineering discipline to UX.

The model is a commodity. The harness is your advantage. A hands-on experiment with GitHub Copilot app's Canvas

Tue, 30 Jun 2026 12:29:09 +0000

The teams getting the most out of AI agents are not the ones with the best model. They are the ones building a custom layer on top of it. This is a short, hands-on look at one new surface for that layer - GitHub Copilot app’s Canvas - learned by building a small internal tool end to end.