Summary
- Microsoft is adding Skills support to Declarative Agents in Microsoft 365 Copilot, enabling reusable modules that package instructions, scripts, templates, and related resources.
- The feature applies to organizations using Declarative Agents, including admins deploying them and users creating their own agents.
- Skills can be reused across multiple agents, load only when needed, and run in a secure sandbox with existing governance controls still applying.
- Organizations using Information Barriers are not supported for this capability at this time.
- No action is required, but Microsoft recommends reviewing your agent strategy and updating internal guidance if you plan to use Skills.
Microsoft is introducing general availability for Skills in Declarative Agents by the end of September 2026. These modular capabilities package instructions and scripts into reusable units for Microsoft 365 Copilot agents. Organizations should review internal governance documentation and inform agent creators about the new feature while noting that environments using Information Barriers are currently unsupported. No direct action is needed to initiate the rollout.
Administrator impact: No direct administrator action is required.
End user impact: Users can enhance declarative agents with modular skills to improve context efficiency and response quality.
Score rationale: This is a standard feature release that introduces new capabilities for declarative agents with no mandatory administrative setup.
Skills in Declarative Agents, modular reusable capabilities for Microsoft 365 Copilot, will be generally available worldwide by end of September 2026. They enhance scalability, security, and governance without requiring action. Organizations using Information Barriers are currently unsupported. Existing governance and compliance controls remain in effect.
Primary Service: M365 Copilot
Admin Impact: Low
User Impact: Medium
Release Start: 15 Sept 2026
Release End: 30 Sept 2026
Published: 23 Sept 2026
Expires: 30 Nov 2026
Last updated: 23 Sept 2026
Services: M365 Copilot
Category: Stay informed
Tags: Admin Action, New Feature, User Adoption
History
9/22/2026 Item Added to Message Center
Microsoft Message
Microsoft is introducing support for Skills in Declarative Agents. Skills are modular, reusable capabilities that package instructions, scripts, templates, and related resources into a reusable unit that can be added to agents. This helps organizations create more scalable, accurate, and maintainable agent experiences while supporting secure execution, governance, and enterprise-ready AI workflows.
Rollout Schedule
- Frontier: Available now.
- General Availability (Worldwide): Rollout begins mid-September 2026.
- Rollout completion: End of September 2026.
Impact on Your Organization
Who is affected
- Organizations using Microsoft 365 Copilot Declarative Agents.
- Admins deploying Declarative Agents.
- Users creating their own Declarative Agents.
- Organizations using Information Barriers are not supported at this time.
Platforms/Services
- Microsoft 365 Copilot
- Declarative Agents
- Web and desktop experiences supporting Declarative Agents
What will happen
- Skills can be added to user-created and admin-deployed Declarative Agents.
- Skills package instructions, scripts, templates, and related assets into reusable modules.
- Skills load only when needed, helping improve context efficiency and response quality.
- Organizations can reuse supported skills across multiple agents.
- Script execution uses a secure sandbox.
- MIP sensitivity labels on skill files are retained and honored.
- Existing governance controls continue to apply.
- No changes occur unless creators choose to add skills.
- Organizations using Information Barriers cannot use this capability currently.
Action Required/Recommendations
No action is required.
- Review Skills capabilities for your Declarative Agent strategy.
- Inform Declarative Agent creators and users about the new capability.
- Update internal guidance and governance documentation if applicable.
- Monitor Microsoft documentation for additional implementation guidance.
Compliance Considerations
- Skills introduce new agent extensibility capabilities.
- Users gain a new method of extending generative AI experiences.
- Existing administrative governance continues to apply.