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 instructions/microsoft/applicationinsights-dotnet/agents-mdgit clone --depth 1 https://github.com/microsoft/ApplicationInsights-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 | $0.00811 | $0.00811 |
| Opus 5 | $0.00405 | $0.00405 |
| Sonnet 5 | $0.00162 | $0.00162 |
| Haiku 4.5 | $0.00081 | $0.00081 |
Grade A, and why
ApplicationInsights-dotnet AGENTS.md 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 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.
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.
How it starts
The opening of the file, as written. The whole thing — 86 lines — stays where its author put it; the contents beside it link to each section on GitHub.
AGENTS.md
Overview
This is the .NET SDK for Azure Monitor / Application Insights, built on OpenTelemetry. It provides the Microsoft.ApplicationInsights family of NuGet packages for instrumenting .NET applications with distributed tracing, metrics, and logging.
Repository Structure
| Directory | Contents |
|---|---|
BASE/ |
Core SDK (Microsoft.ApplicationInsights) |
NETCORE/ |
ASP.NET Core + Worker Service SDKs |
WEB/ |
Classic ASP.NET Web SDK |
LOGGING/ |
NLog logging adapter |
examples/ |
7 runnable example apps |
docs/ |
Conceptual documentation |
skills/ |
AI-assisted instrumentation skills (see below) |
Build & Test
dotnet build Everything.sln
dotnet test Everything.sln
Platform-specific filters: Everything.Windows.slnf, Everything.Linux.slnf.
Key conventions:
- Central package management via
Directory.Packages.props - Public API tracking in
.publicApi/(updatePublicAPI.Unshipped.txtwhen adding public APIs) - Strong-name signing required
AI-Assisted Instrumentation Skills
The skills/applicationinsights-setup/ folder contains a portable skill that helps developers set up, migrate, or enhance Application Insights 3.x SDK in their .NET applications.
What It Does
- Greenfield: Guides new setup for ASP.NET Core, Worker Service, ASP.NET Classic, and Console apps using Application Insights 3.x SDK
- Migration: Walks through 2.x → 3.x upgrade with code change detection and step-by-step fixes
- Enhancement: Adds Entity Framework, Redis, SQL, HTTP, OTLP, custom processors, activities, logging, and custom metrics to apps already on 3.x
Installation by Agent
GitHub Copilot: Copilot natively supports Agent Skills. Copy the skill folder to your project:
cp -r skills/applicationinsights-setup .github/skills/applicationinsights-setup
Copilot discovers skills in .github/skills/ (and .claude/skills/) automatically. Works with Copilot coding agent, GitHub Copilot CLI, and agent mode in VS Code.
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 · 86 lines · 811 tokens per session scan A 2ce770fed0ff
ApplicationInsights-dotnet AGENTS.md is an instructions file published in the GitHub repository microsoft/ApplicationInsights-dotnet (610 stars, last pushed 4d ago), licensed MIT. It adds 811 tokens to every session, about $0.0041 per session on Opus 5. 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.
Other instructions, from other repositories
skills copilot-instructions.md
Copilot instructions for microsoft/skills, covering copilot instructions for agent skills, project overview, ⚠️ fresh information first, core principles and 1. think before coding.
iRacingTelemetrySDK AGENTS.md
Instructions for SVappsLAB/iRacingTelemetrySDK, covering agents.md, layout, commands, style and docs.
iRacingTelemetrySDK CLAUDE.md
Instructions for SVappsLAB/iRacingTelemetrySDK: Read AGENTS.md first. It is the canonical repository guide for coding agents working in this repo.
netdata AGENTS.md
AGENTS.md instructions for netdata/netdata, covering agents.md, goals, requirement language, mandatory development principles and sow system.
GPT-RAG copilot-instructions.md
Instructions for Azure/GPT-RAG, covering repository development and release instructions, branching strategy, default behavior, feature development workflow and branch creation.
azure-dev documentation.instructions.md
Instructions for Azure/azure-dev, covering documentation maintenance, documentation structure, when to update documentation, documentation placement guide and documentation standards.