Microsoft 365 Copilot Agent Store

Microsoft 365 Copilot Agent Store is a catalogue and distribution point for agents that work through Microsoft 365. It is aimed at organisations already standardising on Microsoft’s apps, especially those that need more than one way to deploy or build an agent. The main trade-off is a paid annual subscription, so smaller teams and users outside Microsoft 365 should compare alternatives carefully.

Overview

The store combines a marketplace with installation routes across Microsoft 365. Publishing access is reviewed, which gives organisations a screening step before agents reach users, although review alone does not determine whether a particular agent fits a workflow. The service is available on Android, iOS, macOS, web and Windows, making it practical for mixed-device organisations.

Microsoft, founded in 1975 and headquartered in Redmond, Washington, supports deployment through the Microsoft 365 Copilot Agent Store and Microsoft Marketplace, as well as Teams, Outlook, Word, Excel and PowerPoint. That in-app reach is its clearest advantage over a standalone agent directory: users can encounter agents in the software where work already happens.

Key features

Multiple agent approaches

Agent types span ready-to-use, declarative, custom engine, Copilot Studio, SharePoint and connectors. Ready-to-use agents suit teams seeking an existing starting point. Declarative and custom-engine options are better aligned with organisations that need a more defined behaviour or a tailored technical approach. Copilot Studio, SharePoint agents and connectors extend the choice toward Microsoft content and connected services. The range is useful for varied requirements, but buyers still need to select the right type rather than treating the catalogue as a single uniform product.

Broad installation coverage

Agents can be installed from the store, Marketplace, Teams, Outlook, Word, Excel and PowerPoint. This gives administrators and users several entry points and keeps agent access close to common productivity tasks. Organisations wanting one central, non-Microsoft workspace may find that breadth less relevant.

Pricing

Microsoft 365 Copilot Business costs $21.00 per user per month, billed paid yearly. The annual subscription auto-renews and supports up to 300 users. It is the lowest-cost route for organisations that need the Copilot agent offering without the additional services in the higher bundles.

Microsoft 365 Business Standard with Copilot costs $23.50 per user per month, also billed paid yearly and auto-renewing, for up to 300 users. It adds 1 TB of cloud storage per user, making it the more suitable choice when storage is part of the requirement rather than agents alone.

Microsoft 365 Business Premium with Copilot costs $32.00 per user per month under the same yearly, auto-renewing terms and 300-user limit. It also includes 1 TB of cloud storage per user.

All three plans use a subscription transaction model. Teams above 300 users cannot fit within the stated plan ceiling, and annual billing reduces flexibility for organisations that want to scale month by month.

Platforms

Support covers Android, iOS, macOS, web and Windows. Installation and use can occur in the Agent Store, Marketplace, Teams, Outlook, Word, Excel and PowerPoint, giving Microsoft 365-focused teams a consistent set of destinations across desktop, browser and mobile devices.

Who it's for

This is the strongest fit for organisations already using Microsoft 365 that want reviewed publishing access and a choice of ready-made, configurable, custom or connected agent types. Business plans suit teams of up to 300 users, with Standard or Premium adding 1 TB of cloud storage per user. It is less compelling for individuals seeking a free starting point, teams needing a free tier, or organisations that exceed the stated user cap.

Pros and cons

Pros

• Several agent types: ready-to-use, declarative, custom-engine, Copilot Studio, SharePoint and connector options cover different levels of tailoring.
• In-app installation: Teams, Outlook, Word, Excel and PowerPoint provide access where Microsoft 365 work is performed.
• Reviewed publishing access: organisations get a review step for published agents.
• Cross-platform reach: Android, iOS, macOS, web and Windows support mixed-device deployments.

Cons

• Annual commitment: every stated plan is billed yearly and auto-renews, limiting short-term flexibility.
• 300-user ceiling: the plans do not suit organisations above that stated limit.
• No free plan: the paid model is a barrier for individuals and teams evaluating agents on a zero-cost basis.
• Higher bundles cost more: Standard and Premium add storage, so buyers seeking only agent access may pay for a broader package than needed.

Alternatives

Choose Poe instead if you want a freemium service across Android, iOS, macOS, web, Windows and API, with a free plan offering a 200k-token context length.

GPT Store is the better fit for signed-in users seeking a free entry point with limited messages, image creation and voice chats across Android, iOS and web.

Pick AgenMart for a web-based freemium marketplace with a free trial, 10,000 words of monthly AI text usage and API access.

AGENTIS suits buyers wanting a web and API freemium option with a free Explorer plan.

Choose DeepNLP AI Agent Marketplace for a free plan with agents across more than 30 categories, one hosted deployment, a live subdomain and monetisation.

Relevance AI is a web alternative with a free plan offering 100 credits per day, one user, 10 MB of knowledge, 200 actions per month, one workforce and one project.

AI Agent Store is a paid web option with a Founder Insights — Bootstrapper plan priced at $16.58 per year.

AiCrate is a paid web marketplace that also offers a free plan and free trial, with paid tiers starting at $9.99 per month for 500 credits.

For a broader comparison, see the AI Agent Marketplaces list.

Verdict

Microsoft 365 Copilot Agent Store is the right choice for Microsoft 365 organisations that need reviewed agent publishing, multiple agent formats and installation inside Teams and Office apps. Choose it for ecosystem integration and deployment breadth; look elsewhere if you need a free plan, month-to-month flexibility or capacity beyond 300 users.