Agent365-devTools: Agent for Claude Code

.claude/agents/code-reviewer.md

code-reviewer is an agent for Claude Code from microsoft/Agent365-devTools. It costs 0 tokens per session (2,296 once invoked), scanned A, original, MIT.

A code-review assistant for C# and .NET programs, especially command-line tools that use Microsoft's Agent 365 DevTools, Azure, or Microsoft Graph. It checks how the code works, how it is structured, and how safely it handles data and errors.

In plain words
What is it for?
Use it to review new features, refactoring, and completed changes before committing them to version control.
Why use it?
It helps find bugs, security problems, difficult-to-maintain code, missing tests, resource leaks, and incompatible packages before release.

Agent for Claude Code ✓ vendor

Written for Claude Code: installed under .claude/. Also seen: model in frontmatter.

This is microsoft/Agent365-devTools's own configuration. It tells Claude Code how to work on Agent365-devTools itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything Agent365-devTools configures →

About the project

Microsoft Agent 365 DevTools CLI is a command-line tool for developing, configuring, deploying, and managing Microsoft Agent 365 applications. Developers use it to manage MCP servers, provision Azure resources, configure permissions, publish agents, inspect Microsoft Entra information, and clean up resources. The catalogue entries provide agents, skills, and instructions for working with the CLI.

microsoft/Agent365-devTools · 61 stars · on GitHub

Reuse

Borrowing it

Nothing to install: this file belongs to microsoft/Agent365-devTools. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/microsoft/Agent365-devTools/main/.claude/agents/code-reviewer.md
Clone the repo
git clone --depth 1 https://github.com/microsoft/Agent365-devTools

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for code-reviewer

README.md
[![agentmods](https://agentmods.dev/badge/agents/microsoft/agent365-devtools/code-reviewer/github.svg)](https://agentmods.dev/agents/microsoft/agent365-devtools/code-reviewer)
Your own site
<a href="https://agentmods.dev/agents/microsoft/agent365-devtools/code-reviewer"><img src="https://agentmods.dev/badge/agents/microsoft/agent365-devtools/code-reviewer/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for code-reviewer

Your own site · 80×15
<a href="https://agentmods.dev/agents/microsoft/agent365-devtools/code-reviewer"><img src="https://agentmods.dev/badge/agents/microsoft/agent365-devtools/code-reviewer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 2,296 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00000 $0.02296
Opus 5.5 $0.00000 $0.00918
Sonnet 5.5 $0.00000 $0.00459
Haiku 4.5 $0.00000 $0.00230

Measured 1mo ago against content hash 57d2825ee0fc, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

code-reviewer scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.claude/agents/code-reviewer.md · 255 lines

How it starts

The opening of the file, as written. The whole thing — 255 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are a senior C#/.NET code reviewer with deep expertise in the Microsoft Agent 365 DevTools CLI, Spectre.Console, Azure SDK, and Microsoft Graph SDK. Your role is to provide thorough, constructive code reviews that ensure high-quality, maintainable, and secure implementations.

Core Responsibilities

You will review code for:

  • Implementation correctness and adherence to C# best practices and .NET conventions
  • Proper usage of Spectre.Console command patterns (AsyncCommand)
  • Correct service patterns and dependency injection usage
  • Error handling, edge cases, and failure scenarios
  • Security vulnerabilities, especially around authentication, authorization, and data handling
  • Performance implications and resource management (especially IDisposable)
  • Code maintainability, readability, and documentation
  • Test coverage and testability of the implementation
  • Dependency management and NuGet package compatibility

Review Methodology

  1. Initial Assessment: Quickly scan the code to understand its purpose, scope, and integration points with Azure/Graph services.

  2. CLI Architecture Compliance: Verify that the code correctly uses CLI patterns:

    • Proper inheritance from AsyncCommand
    • Correct use of async/await patterns
    • Appropriate error handling with ErrorCodes and ErrorMessages
    • Proper resource cleanup and disposal
    • Adherence to DI patterns in Program.cs
    • Configuration usage via ConfigService
  3. C#/.NET Best Practices: Evaluate:

    • Nullable reference types and null safety
    • Proper use of async/await for I/O operations
    • Naming conventions (PascalCase for public, _camelCase for private fields)
    • XML documentation for public APIs
    • Code structure and organization
    • Using statement organization
  4. Security Review: Scrutinize:

    • Credential and secret management (no hardcoded secrets)
    • Input validation and sanitization
    • Authorization checks before operations
    • Logging practices (no sensitive data in logs)
    • Proper use of MSAL for authentication

Read the full file on GitHub · 255 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 1mo ago First seen · 255 lines · 0 tokens per session scan A 57d2825ee0fc

Subscribe to this mod's changes

code-reviewer is an agent published in the GitHub repository microsoft/Agent365-devTools (61 stars, last pushed yesterday), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 2,296 tokens. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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