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Build your own claw and agent harness with Microsoft Agent Framework
What does it take to build your own "claw" - a capable, CLI-style agent that can plan, use tools, remember things, and safely act on your behalf? Coding agents and assistants like these can feel like magic, but underneath they are an agent harness: a loop around a language model wired up...
Read moreClick to read more about this postIn memory of the man who put red and green squiggles under words
Starting in Word and expanding to nearly every other word processor, and even things that aren't word processors.
Read moreClick to read more about this postStop overloading your skills
You built a skill for your technology. API references, authentication flows, SDK patterns, error handling, version info, all packed into one skill. The agent calls it, gets all that context, and generates code. The kicker? You've just wasted a lot of tokens.
It already knows
Models have...
Read moreClick to read more about this postLatest posts
Jun 17, 2026
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Windows stack limit checking retrospective, follow-up
Choosing the register to use to pass the desired stack allocation size.
The Old New Thing
Jun 17, 2026
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Azure Backup for Azure Cosmos DB Public Preview Adds Immutable Backups and Long-Term Retention
Hans,
Jay
Azure Backup for Azure Cosmos DB Public Preview Adds Immutable Backups and Long-Term Retention
Picture the first few hours after a serious data incident. A production application is down. Security teams are still trying to understand what happened. Application owners need to know...
Azure Cosmos DB Blog
Jun 17, 2026
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Improving token efficiency for GitHub Copilot in VS Code
Learn how we're improving token efficiency for GitHub Copilot to reduce costs and latency for VS Code users.
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VS Code Blog
Jun 16, 2026
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Boosting Adobe Photoshop’s Performance with MSVC and SPGO
Boosting Adobe Photoshop’s Performance with MSVC and SPGO
Adobe and Microsoft worked together to improve Photoshop performance and responsiveness on Windows by combining MSVC’s peak-performance build settings with Sample-based Profile-Guided Optimization (SPGO). The collaboration...
C++ Team Blog
Jun 16, 2026
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Aspire in VS Code: the 13.4 developer loop
Aspire 13.4 brings more of the local development loop into VS Code: AppHost CodeLens actions, live resource state, dashboard shortcuts, typed resource command prompts, TypeScript AppHost support, and multi-language debugging.
Aspire Blog
Jun 16, 2026
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Third Rule of MSIX
MSIX has several core principles underlying its design and implementation. Engineers half-jokingly call these The Rules of MSIX. The Third Rule of MSIX is arguably the most important and certainly the most foundational:
Package identity is unique across space and...
Inside MSIX
Jun 16, 2026
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Competing against yourself
You shipped a new CLI: better developer experience, modern architecture, and optimized for agents. You deprecated the old one, updated the docs, and blogged about it. Developers are migrating. Then someone asks an AI coding agent to scaffold a project, and the agent... uses the old...
Microsoft for Developers
Jun 16, 2026
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Retrofitting the WM_COPYDATA message onto Windows 3.1
It was carefully designed to be trivial.
The Old New Thing
Jun 16, 2026
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Announcing General Availability of the Azure Cosmos DB Built-in Connector for Logic Apps Standard
Today, we're excited to announce the general availability of the Azure Cosmos DB built-in connector for Azure Logic Apps Standard. This connector gives you a native, high-performance way to integrate Azure Cosmos DB into your Standard logic app workflows, with better throughput, lower...
Azure Cosmos DB Blog