Microsoft 365 Developer Blog
A developer platform for building collaborative apps for hybrid work
Latest posts
Dev Proxy v1.1 with improved support for Microsoft Graph batching
Introducing Dev Proxy v1.1 with critical fixes for Microsoft Graph batch request simulation, resolved authentication plugin issues, and enhanced the MinimalPermissionsGuidancePlugin with new reporting capabilities.
Enriching Microsoft 365 profiles with Microsoft 365 Copilot connectors for people data (public preview)
Enrich Microsoft 365 profiles with Microsoft 365 Copilot connectors for people data
Microsoft Graph Toolkit retirement
We are announcing the deprecation of the Microsoft Graph Toolkit (MGT). The retirement period begins September 1st, 2025 with full retirement planned for August 28th, 2026. Why we’re retiring this toolkit We introduced the Microsoft Graph Toolkit (MGT) to simplify the developer experience when building web applications that connect to Microsoft Graph. It provided a set of reusable web components and helpers to accelerate development and reduce the complexity of authentication and data binding. However, the MGT’s narrower ecosystem, and overlap with more powerful alternatives have led to a decline in its usage o...
Microsoft Graph CLI retirement
We are announcing the retirement of the Microsoft Graph command-line interface (CLI). The Microsoft Graph CLI has served as a powerful tool for developers and IT professionals to interact with Microsoft Graph through simple terminal commands—enabling automation, scripting, and streamlined access to Microsoft 365 data and services. As we evolve our developer tooling strategy, we’re shifting focus to the more integrated and modern experiences found in PowerShell. Why we’re retiring the CLI We introduced the Microsoft Graph CLI to provide a lightweight, cross-platform tool for interacting with Microsoft Graph APIs...
Dev Proxy v1.0 with new features for building robust AI-powered apps
Introducing Dev Proxy v1.0, with new language model-specific testing capabilities to help developers build more reliable AI-powered applications by simulating real-world scenarios and tracking resource usage.
Build Smarter with the Microsoft 365 Agents Toolkit MCP Server
Bring your own agents into Microsoft 365 Copilot
Custom Engine Agents now generally available—build and integrate your own AI into the flow of work Microsoft 365 Copilot is redefining how people interact with AI—embedding it directly into the flow of work as the intuitive, natural interface for agents: the ‘UI for AI’ As Copilot becomes the interface for AI in the workplace, we’re seeing growing demand from customers who want to extend its capabilities with their own solutions. Many of our customers are looking to create custom agents—or have already built agents that operate outside the Microsoft 365 ecosystem—using fine-tuned models, custom logic, orchest...
Supercharge your EWS migration with AI and GitHub Copilot
We're announcing a new tutorial that helps developers migrate solutions from EWS to Microsoft Graph using AI and GitHub Copilot.
Microsoft 365 Copilot APIs: Unlocking enterprise knowledge for AI with the Retrieval API — Now in Public Preview
Read how the Retrieval API gives developers a secure, compliant and scalable way to integrate enterprise content into their AI workflows.