Plugin

Microsoft 365 Agents Toolkit

Toolkit for building and evaluating Microsoft 365 Copilot declarative agents — scaffolding, JSON manifest development, capability configuration, and eval workflows.

Type: Plugin
Repository: microsoft/skills
GitHub stars: 3.1k
License: MIT
Repo last updated: Sep 24, 2026
Source file: .github/plugins/microsoft-365-agents-toolkit/.claude-plugin/plugin.json
Version: 1.3.1

What Microsoft 365 Agents Toolkit is

Microsoft 365 Agents Toolkit is a plugin published in the microsoft/skills repository on GitHub, which has about 3.1k stars. The repository describes itself as: “Skills, MCP servers, Custom Agents, Agents.md for SDKs to ground Coding Agents”

A plugin is a package that bundles skills, slash commands, subagents, hooks, and MCP connectors so they install together. Plugins are plain files with a manifest at .claude-plugin/plugin.json, and they work in both Claude Code and Claude Cowork.

Installing Microsoft 365 Agents Toolkit adds everything it ships in one step. Connectors inside a plugin still need to be connected separately, and hooks and subagents only run in Cowork and Claude Code, not in regular chat.

How to install Microsoft 365 Agents Toolkit

Claude Code

Add the repository as a plugin marketplace: claude plugin marketplace add microsoft/skills
Install the plugin: claude plugin install microsoft-365-agents-toolkit@<marketplace-name>, using the marketplace name from the repository's .claude-plugin/marketplace.json.
Restart the session if the new skills or commands don't appear straight away.

Claude Cowork

Open Customize → Plugins and choose Add marketplace.
Enter microsoft/skills (the owner/repo shorthand works for GitHub).
Find Microsoft 365 Agents Toolkit in the list, click Install, then connect any connectors it needs from its Connectors tab.

New to extending Cowork? Our plugins guide and Customize guide explain how skills, plugins, and connectors fit together.

Inside the source file

An excerpt from .github/plugins/microsoft-365-agents-toolkit/.claude-plugin/plugin.json, shared under the repository's MIT license. Read the full file on GitHub.

Toolkit for building Microsoft 365 Copilot declarative agents.

Installation

Via GitHub Copilot CLI Plugin Marketplace

/plugin install microsoft-365-agents-toolkit@work-iq

Usage

# Develop an agent
"Scaffold a new declarative agent for HR FAQ"

# Configure capabilities
"Add web search to my agent"

# Deploy
"Deploy my agent with ATK"

# Create evals
"Create an eval suite for my  agent based on it's capabilities."

# Run evals
"Run my evals for the agent"

# Analyze and improve
"Analyze the evaluation failures by root cause, and recommend targeted agent instruction changes"
…

The evaluator skill uses the public preview M365 Copilot eval CLI through package-scoped npx. Learn more about the preview, docs, issues, and feedback channels in the public m365-copilot-eval repository.

npx -y --package @microsoft/m365-copilot-eval@latest runevals --prompts-file evals\evals.json --output .evals\latest.json

Skills

License

See the root LICENSE file.

Before you install

Read the whole file first. Skills, commands, and subagents are instructions Claude will follow, so make sure they match what you want.
Check which tools, scripts, or MCP servers it uses. Local servers and scripts run with your permissions.
Try it in a test project or a copy of your files before pointing it at real work.
Pin the version you tested, and review changes before updating.
Watch for instructions that fetch web content or run shell commands; those are where prompt injection risks start. See our prompt injection guide.

FAQ

What is Microsoft 365 Agents Toolkit?

Microsoft 365 Agents Toolkit is a plugin for Claude Code and Claude Cowork from the microsoft/skills repository on GitHub. Toolkit for building and evaluating Microsoft 365 Copilot declarative agents — scaffolding, JSON manifest development, capability configuration, and eval workflows.

How do I install Microsoft 365 Agents Toolkit in Claude Code?

Add the repository as a plugin marketplace: claude plugin marketplace add microsoft/skills Install the plugin: claude plugin install microsoft-365-agents-toolkit@<marketplace-name>, using the marketplace name from the repository's .claude-plugin/marketplace.json. Restart the session if the new skills or commands don't appear straight away.

Can I use Microsoft 365 Agents Toolkit in Claude Cowork?

Open Customize → Plugins and choose Add marketplace. Enter microsoft/skills (the owner/repo shorthand works for GitHub). Find Microsoft 365 Agents Toolkit in the list, click Install, then connect any connectors it needs from its Connectors tab.

Is Microsoft 365 Agents Toolkit safe to install?

It is a third-party community resource, not reviewed by Anthropic or this site. Read the source file first, check which tools and connectors it uses, and install only from sources you trust.

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Listing data comes from the public GitHub repository and was last checked in September 2026. Excerpts are © their authors and shared under MIT. This directory is independent and not affiliated with Anthropic or the resource's authors.