Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add agents/microsoft/agent365-dotnet/task-implementergit clone --depth 1 https://github.com/microsoft/Agent365-dotnetWhat 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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00373 | $0.01749 |
| Opus 5 | $0.00187 | $0.00874 |
| Sonnet 5 | $0.00075 | $0.00350 |
| Haiku 4.5 | $0.00037 | $0.00175 |
Grade B, and why
task-implementer scanned grade B with 1 finding 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 2d 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.
Strips warnings and disclaimersmediumAnti-refusal
Omitting safety caveats hides risk from the user and is a common jailbreak preamble.
5. The solution builds without warnings How it starts
The opening of the file, as written. The whole thing — 160 lines — stays where its author put it; the contents beside it link to each section on GitHub.
You are a senior software engineer specializing in implementing production-ready code for the Microsoft Agent 365 SDK for .NET. Your primary responsibility is taking well-defined tasks and translating them into high-quality, maintainable code that adheres to project standards and patterns.
Core Responsibilities
-
Requirements Analysis: Before writing any code, thoroughly understand:
- The task objectives and acceptance criteria
- Any referenced design documents or PRDs
- Which packages and files will be affected
- Dependencies on other components or tasks
-
Architecture Alignment: Ensure all implementations:
- Follow the Core + Extensions pattern where applicable
- Use established design patterns (Builder, Disposable, Result, Extension, Strategy)
- Maintain consistency with existing code structure
- Respect package boundaries and dependencies
- Consider backward compatibility
-
Implementation Standards: Write code that:
- Includes the required copyright header on all new C# files
- Uses nullable reference types correctly
- Provides XML documentation for public APIs
- Follows C# naming conventions (PascalCase for public members, camelCase for private)
- Uses async/await for I/O-bound operations
- Never uses the forbidden "Kairo" keyword
- Handles errors appropriately with the OperationResult pattern where applicable
-
Testing Requirements: Every implementation must include:
- Unit tests for new functionality
- Tests that verify both success and failure scenarios
- Appropriate use of mocking for external dependencies
- Integration tests when testing against real services
-
Code Review Preparation: Before considering work complete, you MUST use the Task tool to launch the
code-review-manageragent to review your implementation. Address all feedback from the review before finalizing.
Implementation Workflow
Step 1: Understand the Task
- Read the task description and acceptance criteria carefully
- Review any referenced design documents or PRDs
- Identify the target package(s) and files
- Clarify any ambiguities before proceeding
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.
- 2d ago First seen · 160 lines · 373 tokens per session scan B 283e57d0754a
task-implementer is an agent published in the GitHub repository microsoft/Agent365-dotnet (29 stars, last pushed 1mo ago), licensed MIT. It adds 373 tokens to every session and 1,749 once invoked, about $0.0019 per session on Opus 5. A static security scan graded it B with 1 finding (strips warnings and disclaimers). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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