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Microsoft 365 Agents SDK (.NET) · majiayu000 | DecimalAI

agent toolingby majiayu000

Microsoft 365 Agents SDK (.NET)

majiayu000/m365-agents-dotnet

Source majiayu000/claude-skill-registry ↗License MIT

Microsoft 365 Agents SDK for .NET. Build multichannel agents for Teams/M365/Copilot Studio with ASP.NET Core hosting, AgentApplication routing, and MSAL-based auth.

SkillScore96Maintained

Automatic

AI Engineer pack

Last verified 9/2/2026

What it changes

Passed 23 of 24 test cases with the skill, and 7 of 24 without it.

Without skill29%

With skill96%

Checks it passed that the model alone missed

Program.cs calls AddAgentAspNetAuthentication.
The TokenValidation section includes TenantId.
The TokenValidation section includes Audiences.

and 20 more in the full report

16 fixed7 passed either way1 still failing0 broke

Pass-rate lift: +67 pp
Tokens: +57%
Agent turns: 0%
Response time: -31%

Model gemini-3.6-flashMeasured 9/2/2026v223 of 24 cases passed with skill

Tokens, turns and time describe resource use, not a dollar price.

Use this skill

Save it into your project's skills folder. Claude Code picks it up in its next session.

curl -fsSL --create-dirs -o .claude/skills/majiayu000-m365-agents-dotnet/SKILL.md https://app.decimal.ai/s/majiayu000-m365-agents-dotnet/SKILL.md

Want it pinned and updatable? pip install "decimalai>=0.15", then decimalai skills add majiayu000-m365-agents-dotnet, and start Claude Code with claude --plugin-dir "$(git rev-parse --show-toplevel)/.agents"

1 · One-time — install the CLI (docs ↗)

pip install "decimalai>=0.15"

2 · Get the skill — writes .agents/skills/majiayu000-m365-agents-dotnet/ and pins it in .decimal/skills.lock

decimalai skills add majiayu000-m365-agents-dotnet

No CLI? Get the same file — curl · raw file

curl -fsSL --create-dirs -o .claude/skills/majiayu000-m365-agents-dotnet/SKILL.md https://app.decimal.ai/s/majiayu000-m365-agents-dotnet/SKILL.md

Raw file: /s/majiayu000-m365-agents-dotnet/SKILL.md ↗ · machine-readable summary at /s/majiayu000-m365-agents-dotnet.json ↗

Safety checks: 3 of 3 passed

Code scan CleanIntent PassedContent Clean

See it in action

One of 16 test cases the skill fixed. Same model, same prompt, with and without the skill.

1 of 16

Prompt

In an agent turn error delegate, what method should be called on the conversation state object to ensure corrupted turn state is purged before notifying the user of the error?

What was checked, without and with the skill
Checked	Without skill	With skill
The error handler calls turnState.Conversation.DeleteStateAsync.	Missed	Passed

case-19 · gemini-3.6-flash · 9/2/2026 · answers are capped and redacted

What's inside

The instructions your model reads when the skill loads.

SKILL.md283 linessingle file

Microsoft 365 Agents SDK (.NET)

Overview

Build enterprise agents for Microsoft 365, Teams, and Copilot Studio using the Microsoft.Agents SDK with ASP.NET Core hosting, agent routing, and MSAL-based authentication.

Before implementation

Use the microsoft-docs MCP to verify the latest APIs for AddAgent, AgentApplication, and authentication options.
Confirm package versions in NuGet for the Microsoft.Agents.* packages you plan to use.

Installation

dotnet add package Microsoft.Agents.Hosting.AspNetCore
dotnet add package Microsoft.Agents.Authentication.Msal
dotnet add package Microsoft.Agents.Storage
dotnet add package Microsoft.Agents.CopilotStudio.Client
dotnet add package Microsoft.Identity.Client.Extensions.Msal

Configuration (appsettings.json)

{
  "TokenValidation": {
    "Enabled": true,
    "Audiences": [
      "{{ClientId}}"
    ],
    "TenantId": "{{TenantId}}"
  },
  "AgentApplication": {
    "StartTypingTimer": false,
    "RemoveRecipientMention": false,
    "NormalizeMentions": false
  },
  "Connections": {
    "ServiceConnection": {
      "Settings": {
        "AuthType": "ClientSecret",
        "ClientId": "{{ClientId}}",

Track record

Benchmark

23 / 24

test cases passed, vs 7 / 24 without

Adoption

Users: 0
Times used: 0

Safety and source details

SkillSafety

✓ 3 of 3 passed

Code scan15 of 15 checks clean

0 critical · 0 warning · 0 info — scanner v4 — 8/10/2026

View 15 scanner checks

live_secretremote_code_executionreverse_shelldata_exfiltrationssrf_metadataagent_snoopinganti_refusaldestructive_commandsobfuscated_unicodeunicode_homoglyphopaque_blobsuspicious_urltool_overreachtrigger_abuseprompt_injection_phrasing

IntentSafe

LLM judge · does the skill do what it claims

ContentClean

LLM judge · policy & harmful-content review

Source

Imported

majiayu000 / claude-skill-registry

skills/agent/m365-agents-dotnet-clinscott-cstar/SKILL.md

View on GitHub ↗

License MITImported 8/10/2026Version v2

Other skills for the same job

Published skills whose descriptions closely match this one, with their headline benchmark lift.

More skills from the same source and nearby in the registry, with their headline benchmark lift.

Ready to supercharge your AI agents?

See it in action

What's inside

Microsoft 365 Agents SDK (.NET)

Overview

Before implementation

Installation

Configuration (appsettings.json)

Track record

Benchmark

Adoption

SkillSafety

Source

Other skills for the same job

Related skills