Showing category results for AI

Nov 5, 2026
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Your best AX fixes are hiding in agent trajectories

Waldek Mastykarz

All five agent runs produced a working script, and nothing in the eval score looked wrong. The trajectories told a different story. Every run read a DLL as raw bytes to find plugin names, and three scripts would quietly reroute a CI runner's network traffic. Here are the patterns to look for in your own agents' trajectories, and what to change in y...

AI
Oct 30, 2026
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Does ‘eval’ in the workspace path change what your agent does?

Waldek Mastykarz

Your eval might be telling the agent it's a test before the agent reads a single instruction. Eval tools need a fresh folder for every run, and the easiest way to get one is a temp directory with a random name like . The agent sees that path on every turn, in the system prompt as its working directory and in the output of every tool call. If models...

AI
Oct 20, 2026
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Can a local git remote replace GitHub in your agent eval?

Waldek Mastykarz

We swapped GitHub for a local git remote in our agent evals. Rebasing and pushing on request were unaffected, but the agent pushed on its own 11 points less often. Here's when a local remote is a safe shortcut, and when it isn't.

AI
Oct 9, 2026
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Introducing the Agent Experience (AX) Practitioner Playbook

Waldek Mastykarz

AI coding agents now pick the SDK, the version, and the pattern for your developers. The AX Practitioner Playbook is our method for finding out whether they get your technology right, and for fixing the sources they rely on when they don't.

AI
Oct 7, 2026
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From Spec-First to Enterprise-Ready: Extending GitHub Spec Kit

Apoorv Gupta

How presets, extensions, bundles, workflows, and governed catalogs make Spec-Driven Development adaptable at scale This article continues Spec-Driven Development: A Spec-First Approach to AI-Native Engineering, which introduced the principles and lifecycle of SDD. Here, we focus on the next challenge: adapting that workflow to the standards, dom...

Microsoft for DevelopersAIGitHub Copilot
Oct 6, 2026
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What is Agent Experience (AX)?

Waldek Mastykarz

Your agent says it's done, and the code compiles, but did it pick your technology? Did it use it correctly? Learn what Agent Experience (AX) is, how to measure it, and why the obvious fix isn't always the right one.

AI
Sep 29, 2026
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Build with Azure Canvases: a shared workspace for agents

Matt Hernandez

See how Azure Canvases bring plans, code, previews, and deployment feedback together in a collaborative workspace for agent-assisted development.

AIMicrosoft for DevelopersGitHub Copilot
Sep 21, 2026
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Knowledge cutoff is a poor proxy for model capability

Waldek Mastykarz

A model can fail on features released before its knowledge cutoff, then succeed on ones released after it. We tested hundreds of product changes and found that the date tells you far less than the work does.

AI