Sébastien Levert
@sebastienlevert.com
Principal PM Manager at #Microsoft focusing on Microsoft 365 Copilot developer experiences.
Reposted by Sébastien Levert
2 days until my TypeSpec webinar. Real-world patterns for building M365 Copilot declarative agents.
Production-ready guidance, not marketing fluff.
Nov 25, 12 PM ET.
🎟️ Register now vtns.io/TuKMJn
Production-ready guidance, not marketing fluff.
Nov 25, 12 PM ET.
🎟️ Register now vtns.io/TuKMJn
November 23, 2025 at 4:09 PM
2 days until my TypeSpec webinar. Real-world patterns for building M365 Copilot declarative agents.
Production-ready guidance, not marketing fluff.
Nov 25, 12 PM ET.
🎟️ Register now vtns.io/TuKMJn
Production-ready guidance, not marketing fluff.
Nov 25, 12 PM ET.
🎟️ Register now vtns.io/TuKMJn
Reposted by Sébastien Levert
And if you prefer reading than watching, here is a great written summary of all the Ignite announcements related to building agents for Microsoft 365 Copilot: devblogs.microsoft.com/microsoft365...
#msignite #microsoft365
#msignite #microsoft365
Ignite 2025: A Developer’s Guide to Building Agents for Microsoft 365 - Microsoft 365 Developer Blog
A developer’s guide to building agents for Microsoft 365. See what’s new at Ignite 2025—Declarative Agents, Custom Engine Agents, and Agent 365 for enterprise-grade security and management.
devblogs.microsoft.com
November 22, 2025 at 7:31 AM
And if you prefer reading than watching, here is a great written summary of all the Ignite announcements related to building agents for Microsoft 365 Copilot: devblogs.microsoft.com/microsoft365...
#msignite #microsoft365
#msignite #microsoft365
Ignite 2025: A Developer’s Guide to Building Agents for Microsoft 365
Ignite 2025: A Developer’s Guide to Building Agents for Microsoft 365 - Microsoft 365 Developer Blog
A developer’s guide to building agents for Microsoft 365. See what’s new at Ignite 2025—Declarative Agents, Custom Engine Agents, and Agent 365 for enterprise-grade security and management.
devblogs.microsoft.com
November 21, 2025 at 8:51 PM
Ignite 2025: A Developer’s Guide to Building Agents for Microsoft 365
Reposted by Sébastien Levert
If you're building agents for Microsoft 365 Copilot, this Ignite session is absolutely worth your time.
🔥 TypeSpec
🤖 Multi-agent support for declarative agents
📎 New capabilities for custom engine agents in Copilot Chat (yes—file upload!)
Check it out: ignite.microsoft.com/en-US/sessio... #MSIgnite
🔥 TypeSpec
🤖 Multi-agent support for declarative agents
📎 New capabilities for custom engine agents in Copilot Chat (yes—file upload!)
Check it out: ignite.microsoft.com/en-US/sessio... #MSIgnite
Build Agents for Copilot with the Microsoft 365 Agents Toolkit
Build and bring your own agent into Microsoft 365 Copilot with the Microsoft 365 Agents Toolkit. Explore Declarative and Custom Engine Agents, use the Microsoft 365 Agents SDK, and extend with…
ignite.microsoft.com
November 21, 2025 at 5:36 PM
If you're building agents for Microsoft 365 Copilot, this Ignite session is absolutely worth your time.
🔥 TypeSpec
🤖 Multi-agent support for declarative agents
📎 New capabilities for custom engine agents in Copilot Chat (yes—file upload!)
Check it out: ignite.microsoft.com/en-US/sessio... #MSIgnite
🔥 TypeSpec
🤖 Multi-agent support for declarative agents
📎 New capabilities for custom engine agents in Copilot Chat (yes—file upload!)
Check it out: ignite.microsoft.com/en-US/sessio... #MSIgnite
Reposted by Sébastien Levert
Building M365 Copilot agents? TypeSpec is Microsoft's answer to AI platform instability.
21+ years of M365 dev experience → practical webinar Nov 25.
🎟️ Register now vtns.io/TuKMJn
#Microsoft365
21+ years of M365 dev experience → practical webinar Nov 25.
🎟️ Register now vtns.io/TuKMJn
#Microsoft365
November 21, 2025 at 1:18 PM
Building M365 Copilot agents? TypeSpec is Microsoft's answer to AI platform instability.
21+ years of M365 dev experience → practical webinar Nov 25.
🎟️ Register now vtns.io/TuKMJn
#Microsoft365
21+ years of M365 dev experience → practical webinar Nov 25.
🎟️ Register now vtns.io/TuKMJn
#Microsoft365
Microsoft 365 Copilot APIs: What’s New and What’s Next
Microsoft 365 Copilot APIs: What’s New and What’s Next - Microsoft 365 Developer Blog
Discover what’s new in Microsoft 365 Copilot APIs — Retrieval API is now GA, and Chat and Search APIs are in public preview. Learn how these APIs, as part of Work IQ, deliver secure, permission-aware...
devblogs.microsoft.com
November 20, 2025 at 8:51 PM
Microsoft 365 Copilot APIs: What’s New and What’s Next
Reposted by Sébastien Levert
IntelliSense for declarative agents. Type checking for manifests. Automatic OpenAPI generation. See how TypeSpec changes everything.
Webinar Nov 25, 12 PM ET.
🎟️ Register now vtns.io/TuKMJn
#Copilot
Webinar Nov 25, 12 PM ET.
🎟️ Register now vtns.io/TuKMJn
#Copilot
November 20, 2025 at 3:53 PM
IntelliSense for declarative agents. Type checking for manifests. Automatic OpenAPI generation. See how TypeSpec changes everything.
Webinar Nov 25, 12 PM ET.
🎟️ Register now vtns.io/TuKMJn
#Copilot
Webinar Nov 25, 12 PM ET.
🎟️ Register now vtns.io/TuKMJn
#Copilot
Microsoft Agent 365 Interoperability for Smart, Secure Productivity
Microsoft Agent 365 Interoperability for Smart, Secure Productivity - Microsoft 365 Developer Blog
Agent 365 Interoperability equips any agent with apps and data to simplify human-agent workflows.
devblogs.microsoft.com
November 20, 2025 at 3:13 PM
Microsoft Agent 365 Interoperability for Smart, Secure Productivity
Ignite 2025 – What’s new for Office Add-ins
Ignite 2025 - What's new for Office Add-ins - Microsoft 365 Developer Blog
Explore the latest features in Office Add-ins, including platform updates and enhancements for a better developer experience.
devblogs.microsoft.com
November 19, 2025 at 8:51 PM
Ignite 2025 – What’s new for Office Add-ins
From Innovation to Enterprise Trust with Microsoft Agent 365
From Innovation to Enterprise Trust with Microsoft Agent 365 - Microsoft 365 Developer Blog
Discover how Microsoft Agent 365 bridges innovation and enterprise trust. Learn how to build secure, compliant, and scalable agents with flexible paths for any AI stack—Copilot Studio, Microsoft Foundry,...
devblogs.microsoft.com
November 19, 2025 at 3:13 PM
From Innovation to Enterprise Trust with Microsoft Agent 365
Announcing the Microsoft Teams SDK (Formerly the Teams AI Library)
Announcing the Microsoft Teams SDK (Formerly the Teams AI Library) - Microsoft 365 Developer Blog
Discover the new and improved Teams AI Library, designed to help developers create even more powerful agents for Microsoft Teams.
devblogs.microsoft.com
November 18, 2025 at 8:51 PM
Announcing the Microsoft Teams SDK (Formerly the Teams AI Library)
And some Demo Time on stage!
Microsoft Ignite week. Big announcements, big sessions.
Make your demo just as big with Demo Time. 😉
demotime.show
Make your demo just as big with Demo Time. 😉
demotime.show
Demo Time
The only presentation tool designed for flawless live coding. Script your demos to perfection—no typos, no missteps, just professional presentations every time.
demotime.show
November 17, 2025 at 10:50 PM
And some Demo Time on stage!
Reposted by Sébastien Levert
TypeSpec = Bicep for API manifests. Write once, generate declarative agent manifests + OpenAPI specs automatically.
Learn how in my Nov 25 webinar.
🎟️ Register now vtns.io/TuKMJn
#TypeSpec #DeveloperTools
Learn how in my Nov 25 webinar.
🎟️ Register now vtns.io/TuKMJn
#TypeSpec #DeveloperTools
November 17, 2025 at 1:15 PM
TypeSpec = Bicep for API manifests. Write once, generate declarative agent manifests + OpenAPI specs automatically.
Learn how in my Nov 25 webinar.
🎟️ Register now vtns.io/TuKMJn
#TypeSpec #DeveloperTools
Learn how in my Nov 25 webinar.
🎟️ Register now vtns.io/TuKMJn
#TypeSpec #DeveloperTools
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