HeyJaredWaldek Mastykarz
- Indexed articles, last 90 days
- 5
- Latest publication
- Jul 17, 2026
- Outlet visibility, for Microsoft DevBlogs
- Top 500K sites
- Earliest in this view
- Jul 6, 2026
Latest articles
How to test agent skills without hitting real APIs (opens the original)
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Your agent skill calls an API. The moment you start evaluating it, every run either costs money or mutates production data. Learn how to mock APIs transparently so you can run evals without changing your skill or hitting real endpoints. The post How to test agent skills without hitting real APIs appeared first on Microsoft for Developers.
Building AX evals that actually work (opens the original)
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This is the eighth and final article in a series about Agent Experience (AX): the practice of making AI coding agents work correctly with your technology. The series covers what you can and can’t control in the agent stack, how to measure whether your extensions are helping or hurting, and how to iterate toward better […] The post Building AX evals that actually work appeared first on Microsoft for Developers.
The hidden variables in your agent eval (opens the original)
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This is the seventh article in a series about Agent Experience (AX): the practice of making AI coding agents work correctly with your technology. The series covers what you can and can’t control in the agent stack, how to measure whether your extensions are helping or hurting, and how to iterate toward better outcomes. You […] The post The hidden variables in your agent eval appeared first on Microsoft for Developers.
Don’t rewrite your CLI for agents (opens the original)
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There’s advice making the rounds: replace your CLI args with a single --json payload so agents can use your tool more effectively. The thinking being, that agents already think in structured formats, and nested data maps cleanly to JSON. Flat args on the other hand, force awkward conventions like repeating --service-name to delimit multi-value groups, […] The post Don’t rewrite your CLI for agents appeared first on Microsoft for Developers.
Not all model upgrades are upgrades (opens the original)
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A new model drops with lower per-token pricing and better benchmarks. You switch. A week later someone asks why the agent is burning 12x more tokens on the same task while producing worse output. We ran 150 agent tasks across 15 scenarios on two models, Claude Sonnet 4.6 and Claude Sonnet 5, using GitHub Copilot […] The post Not all model upgrades are upgrades appeared first on Microsoft for Developers.
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Audience
Top 500K sites
For Microsoft DevBlogs, the outlet · Measured Aug 1, 2026
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