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How to test agent skills without hitting real APIs

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.
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Jul 22, 2026
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Visual Studio Code 1.130 (Insiders)

Visual Studio Code Team
Learn what's new in Visual Studio Code 1.130 (Insiders) Read the full article
VS Code Blog
Jul 22, 2026
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Pure Virtual C++ 2026 Is a Wrap

Marian Luparu
Pure Virtual C++ 2026 is a wrap. Every featured and on-demand session is now available on YouTube — catch up on C++/Rust interop, AI-driven tooling, build performance, and more.
C++ Team Blog
Jul 22, 2026
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Windows App Development CLI v0.5.0 - expanded UI automation, JS/TS bindings, and more

Zachary Teutsch
WinApp CLI v0.5.0 greatly expands the UI automation toolkit (recording, touch, pen, and keyboard injection), lets you call Windows Runtime APIs straight from JavaScript and TypeScript with zero native addons, and makes WinUI crashes far easier to diagnose. Get the update by running...
#ifdef Windows
Jul 22, 2026
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Building Agents that Act on Your Behalf with Toolboxes in Foundry

Linda,
Maria
How Toolboxes in Foundry simplify user delegation At some point, many agents move from answering questions to taking action. And when it does, the question becomes: whose identity is it acting with? Imagine you are building an internal employee agent.  It needs to...
Microsoft Foundry Blog
Jul 22, 2026
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The Microsoft Agent Framework Harness is now released

Wes Steyn
Your agents can now be built on a stable, batteries-included harness - the loop, planning, memory, context management, approvals, and telemetry that turn a model into an agent that actually does things - in both Python and .NET. What is an agent harness? An agent harness is the...
Microsoft Agent Framework
Jul 21, 2026
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Pure Virtual C++ 2026 Is Now Live!

Marian Luparu
Pure Virtual C++ 2026 is streaming now — watch five featured sessions live with Q&A, plus a full on-demand playlist, all free.
C++ Team Blog
Jul 21, 2026
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Introducing the ETW MCP: AI-assisted ETL trace analysis, headless and in your terminal

Tristan Gibeau
If you’ve ever opened an ETL trace with hundreds of data tables and wondered “where do I even start?” This post is for you. We’re releasing an early preview of the ETW MCP, a Model Context Protocol server that lets GitHub Copilot, or any MCP-aware AI assistant, read, query, and...
Performance and Diagnostics
Jul 21, 2026
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July Patches for Azure DevOps Server

Gloridel Morales
We are releasing new patches for our self‑hosted product, Azure DevOps Server. We strongly recommend that all customers stay up to date with the latest, most secure version of Azure DevOps Server. The most recent release, Azure DevOps Server, is available on the download page. The...
Azure DevOps Blog
Jul 21, 2026
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Display Name is for Humans

Howard Kapustein
Package identity exists for one primary purpose: To provide software with a stable and unambiguous way to identify a package. This is a considerable improvement over the historical tendency to assign UUIDs and GUIDs to nearly everything - including things that humans were expected to...
Inside MSIX