Sébastien Levert
@sebastienlevert.com
Principal PM Manager at #Microsoft focusing on Microsoft 365 Copilot developer experiences.
Reposted by Sébastien Levert
Stop hand-writing JSON manifests for M365 Copilot agents.
TypeSpec brings type safety and IntelliSense to declarative agent development.
Join my webinar Nov 25, 12 PM ET.
🎟️ Register now vtns.io/TuKMJn
#Microsoft365 #Copilot
TypeSpec brings type safety and IntelliSense to declarative agent development.
Join my webinar Nov 25, 12 PM ET.
🎟️ Register now vtns.io/TuKMJn
#Microsoft365 #Copilot
November 12, 2025 at 1:16 PM
Stop hand-writing JSON manifests for M365 Copilot agents.
TypeSpec brings type safety and IntelliSense to declarative agent development.
Join my webinar Nov 25, 12 PM ET.
🎟️ Register now vtns.io/TuKMJn
#Microsoft365 #Copilot
TypeSpec brings type safety and IntelliSense to declarative agent development.
Join my webinar Nov 25, 12 PM ET.
🎟️ Register now vtns.io/TuKMJn
#Microsoft365 #Copilot
New developer resource page for Microsoft 365 interoperability and data portability
New developer resource page for Microsoft 365 interoperability and data portability - Microsoft 365 Developer Blog
Microsoft is launching a centralized developer resource page that consolidates interoperability and data portability information, tools, and feedback channels to help partners and customers use Microsoft...
devblogs.microsoft.com
November 4, 2025 at 3:13 PM
New developer resource page for Microsoft 365 interoperability and data portability
SharePoint Framework (SPFx) roadmap update – October 2025
SharePoint Framework (SPFx) roadmap update – October 2025 - Microsoft 365 Developer Blog
SPFx is powering the future of Microsoft 365. From AI-driven portals to seamless integrations across SharePoint, Teams and Viva, SPFx is driving innovation at scale. This blog series kicks off our journey...
devblogs.microsoft.com
October 31, 2025 at 2:13 PM
SharePoint Framework (SPFx) roadmap update – October 2025
Dev Proxy v1.3 with exporting to HAR, LLM usage tracking, and enhanced permissions analysis
Dev Proxy v1.3 with exporting to HAR, LLM usage tracking, and enhanced permissions analysis - Microsoft 365 Developer Blog
Introducing Dev Proxy v1.3 with new plugins for inspecting and debugging API requests, along with enhanced permissions analysis and improved OpenAPI spec generation for complex testing scenarios.
devblogs.microsoft.com
October 30, 2025 at 7:51 PM
Dev Proxy v1.3 with exporting to HAR, LLM usage tracking, and enhanced permissions analysis
Migrating from IDCRL authentication to modern authentication in SharePoint
Migrating from IDCRL authentication to modern authentication in SharePoint - Microsoft 365 Developer Blog
In the next few months, Microsoft will be removing the legacy authentication protocol known as IDCRL (Identity Client Run Time Library) in SharePoint.
devblogs.microsoft.com
October 30, 2025 at 2:13 PM
Migrating from IDCRL authentication to modern authentication in SharePoint
Deprecation of the previewImageUrl property for Insights items that reference file attachments
Deprecation of the previewImageUrl property for Insights items that reference file attachments - Microsoft 365 Developer Blog
The previewImageUrl property is no longer returned for file attachment items.
devblogs.microsoft.com
October 29, 2025 at 7:51 PM
Deprecation of the previewImageUrl property for Insights items that reference file attachments
Reposted by Sébastien Levert
OpenAI Codex is now integrated directly in VS Code through the new Agent Sessions view - and can be powered by your GitHub Copilot subscription.
Try it out now with VS Code Insiders and a Copilot Pro+ subscription. Happy coding!
Try it out now with VS Code Insiders and a Copilot Pro+ subscription. Happy coding!
October 28, 2025 at 4:50 PM
OpenAI Codex is now integrated directly in VS Code through the new Agent Sessions view - and can be powered by your GitHub Copilot subscription.
Try it out now with VS Code Insiders and a Copilot Pro+ subscription. Happy coding!
Try it out now with VS Code Insiders and a Copilot Pro+ subscription. Happy coding!
Exciting new capabilities and enhancements for M365 Developer Program – October 2025 devblogs.microsoft.com/microsoft365...
Exciting new capabilities and enhancements for M365 Developer Program - October 2025 - Microsoft 365 Developer Blog
We are excited to share updates on the Microsoft 365 Developer Program with new capabilities and upcoming changes.
devblogs.microsoft.com
October 16, 2025 at 7:51 PM
Exciting new capabilities and enhancements for M365 Developer Program – October 2025 devblogs.microsoft.com/microsoft365...
Reposted by Sébastien Levert
💡 Build declarative agents for #Microsoft365 #Copilot with TypeSpec
Let @paolopia.bsky.social show modeling actions; generating OpenAPI; wiring REST plugins; and running the agent in Copilot Chat; using the Microsoft 365 Agents Toolkit.
📺 Watch now → youtu.be/yiq9ZgZTY7E
#CopilotStudio
Let @paolopia.bsky.social show modeling actions; generating OpenAPI; wiring REST plugins; and running the agent in Copilot Chat; using the Microsoft 365 Agents Toolkit.
📺 Watch now → youtu.be/yiq9ZgZTY7E
#CopilotStudio
October 15, 2025 at 2:31 PM
💡 Build declarative agents for #Microsoft365 #Copilot with TypeSpec
Let @paolopia.bsky.social show modeling actions; generating OpenAPI; wiring REST plugins; and running the agent in Copilot Chat; using the Microsoft 365 Agents Toolkit.
📺 Watch now → youtu.be/yiq9ZgZTY7E
#CopilotStudio
Let @paolopia.bsky.social show modeling actions; generating OpenAPI; wiring REST plugins; and running the agent in Copilot Chat; using the Microsoft 365 Agents Toolkit.
📺 Watch now → youtu.be/yiq9ZgZTY7E
#CopilotStudio
Reposted by Sébastien Levert
I used Spec Kit to build a Mauna Kea observatory camera tracker 🌠
In the process, had to write a full guide for Spec Kit, because why not 🤷
Read
↳ den.dev/blog/github-...
In the process, had to write a full guide for Spec Kit, because why not 🤷
Read
↳ den.dev/blog/github-...
October 13, 2025 at 6:59 PM
I used Spec Kit to build a Mauna Kea observatory camera tracker 🌠
In the process, had to write a full guide for Spec Kit, because why not 🤷
Read
↳ den.dev/blog/github-...
In the process, had to write a full guide for Spec Kit, because why not 🤷
Read
↳ den.dev/blog/github-...
Changes to inline image representation in Outlook on the web and new Outlook for Windows
Changes to inline image representation in Outlook on the web and new Outlook for Windows - Microsoft 365 Developer Blog
We are changing how inline images are represented in the HTML in Outlook on the web and the new Outlook for Windows.
devblogs.microsoft.com
October 7, 2025 at 2:13 PM
Changes to inline image representation in Outlook on the web and new Outlook for Windows
SharePoint Framework (SPFx) roadmap update – September 2025
SharePoint Framework (SPFx) roadmap update – September 2025 - Microsoft 365 Developer Blog
SPFx is powering the future of Microsoft 365. From AI-driven portals to seamless integrations across SharePoint, Teams and Viva, SPFx is driving innovation at scale. This new blog series kicks off our...
devblogs.microsoft.com
September 25, 2025 at 7:51 PM
SharePoint Framework (SPFx) roadmap update – September 2025
Dev Proxy v1.2 with mock response mirroring and improved performance
Dev Proxy v1.2 with mock response mirroring and improved performance - Microsoft 365 Developer Blog
Introducing Dev Proxy v1.2 with mock response mirroring capabilities that make API simulation more realistic.
devblogs.microsoft.com
September 25, 2025 at 2:13 PM
Dev Proxy v1.2 with mock response mirroring and improved performance
The new GitHub app for Teams: from conversation to code
The new GitHub app for Teams: from conversation to code - Microsoft 365 Developer Blog
The new AI-powered GitHub app for Teams allows you to collaborate with GitHub Copilot right inside your Teams conversations.
devblogs.microsoft.com
September 18, 2025 at 7:51 PM
The new GitHub app for Teams: from conversation to code
Excel announces undo support for 3rd-party Copilot declarative agents & web add-ins
Excel announces undo support for 3rd-party Copilot declarative agents & web add-ins - Microsoft 365 Developer Blog
Excel now supports Undo for 3rd-party Copilot declarative agents and web add-ins! This long-awaited capability unlocks a more seamless, professional experience for both developers and end users and addresses...
devblogs.microsoft.com
September 10, 2025 at 7:51 PM
Excel announces undo support for 3rd-party Copilot declarative agents & web add-ins
Prepare your VBA projects for VBScript deprecation in Windows devblogs.microsoft.com/microsoft365...
Prepare your VBA projects for VBScript deprecation in Windows - Microsoft 365 Developer Blog
In May 2024, Microsoft announced the phased deprecation of VBScript in Windows, as detailed in the official Windows IT Pro Blog. This change impacts VBA developers who rely on VBScript, particularly for...
devblogs.microsoft.com
September 10, 2025 at 2:13 PM
Prepare your VBA projects for VBScript deprecation in Windows devblogs.microsoft.com/microsoft365...
Change to data visibility for Microsoft Graph callRecords APIs in GCC High and DoD
Change to data visibility for Microsoft Graph callRecords APIs in GCC High and DoD - Microsoft 365 Developer Blog
We're making changes to how Microsoft handles Microsoft Teams call data in GCC High and DoD environments that we expose via the Microsoft Graph callRecords APIs.
devblogs.microsoft.com
September 8, 2025 at 7:51 PM
Change to data visibility for Microsoft Graph callRecords APIs in GCC High and DoD
Dev Proxy v1.1 with improved support for Microsoft Graph batching devblogs.microsoft.com/microsoft365...
Dev Proxy v1.1 with improved support for Microsoft Graph batching - Microsoft 365 Developer Blog
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...
devblogs.microsoft.com
September 4, 2025 at 2:13 PM
Dev Proxy v1.1 with improved support for Microsoft Graph batching devblogs.microsoft.com/microsoft365...
Enriching Microsoft 365 profiles with Microsoft 365 Copilot connectors for people data (public preview)
Enriching Microsoft 365 profiles with Microsoft 365 Copilot connectors for people data (public preview) - Microsoft 365 Developer Blog
Enrich Microsoft 365 profiles with Microsoft 365 Copilot connectors for people data
devblogs.microsoft.com
September 1, 2025 at 7:51 PM
Enriching Microsoft 365 profiles with Microsoft 365 Copilot connectors for people data (public preview)
Microsoft Graph CLI retirement
Microsoft Graph CLI retirement - Microsoft 365 Developer Blog
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...
devblogs.microsoft.com
August 30, 2025 at 7:51 PM
Microsoft Graph CLI retirement
Microsoft Graph Toolkit retirement
Microsoft Graph Toolkit retirement - Microsoft 365 Developer Blog
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...
devblogs.microsoft.com
August 30, 2025 at 2:13 PM
Microsoft Graph Toolkit retirement
Vacation mode ON.
August 15, 2025 at 10:57 PM
Vacation mode ON.
Dev Proxy v1.0 with new features for building robust AI-powered apps
Dev Proxy v1.0 with new features for building robust AI-powered apps - Microsoft 365 Developer Blog
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...
devblogs.microsoft.com
August 7, 2025 at 2:13 PM
Dev Proxy v1.0 with new features for building robust AI-powered apps
Reposted by Sébastien Levert
We’re excited to announce Dev Proxy v1.0, with new language model-specific testing capabilities. Check it out! devblogs.microsoft.com/microsoft365...
Dev Proxy v1.0 with new features for building robust AI-powered apps - Microsoft 365 Developer Blog
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 resourc...
devblogs.microsoft.com
August 7, 2025 at 6:21 AM
We’re excited to announce Dev Proxy v1.0, with new language model-specific testing capabilities. Check it out! devblogs.microsoft.com/microsoft365...
So I'm hesitating to cancel my ChatGPT Plus sub and get a Claude Pro sub Claude Code and use Claude as my second driver (when not using Copilot). Thoughts? Should I?
July 22, 2025 at 3:47 AM
So I'm hesitating to cancel my ChatGPT Plus sub and get a Claude Pro sub Claude Code and use Claude as my second driver (when not using Copilot). Thoughts? Should I?