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/decriptor/avaloniaui.mcp/claude-mdgit clone --depth 1 https://github.com/decriptor/AvaloniaUI.MCPWrote 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.
[](https://agentmods.dev/instructions/decriptor/avaloniaui.mcp/claude-md)<a href="https://agentmods.dev/instructions/decriptor/avaloniaui.mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/decriptor/avaloniaui.mcp/claude-md.svg" alt="Measured on agentmods" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.01146 | $0.01146 |
| Opus 5 | $0.00573 | $0.00573 |
| Sonnet 5 | $0.00229 | $0.00229 |
| Haiku 4.5 | $0.00115 | $0.00115 |
Grade A, and why
AvaloniaUI.MCP CLAUDE.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 4d 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 — 114 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CLAUDE.md
This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
Project Overview
This is an AvaloniaUI.MCP project - a comprehensive Model Context Protocol (MCP) server that provides extensive AvaloniaUI knowledge and development assistance. The server is built on .NET 9.0 and implements the official Microsoft MCP SDK to deliver tools, resources, and prompts for AvaloniaUI development.
Development Environment
- Target Framework: .NET 9.0 (net9.0)
- Required SDK: 9.0.300 (specified in global.json)
- Language Features: C# with ImplicitUsings and Nullable reference types enabled
- Package Management: Central Package Management is enabled (ManagePackageVersionsCentrally=true)
- MCP SDK: ModelContextProtocol 0.3.0-preview.1 for server implementation
Project Structure
AvaloniaUI.MCP/
├── AvaloniaUI.MCP.slnx # Solution file
├── global.json # SDK version pinning
├── Directory.Build.props # MSBuild properties
├── Directory.Build.targets # MSBuild targets with custom build message
├── Directory.Packages.props # Central package management
├── nuget.config # NuGet configuration
├── src/
│ └── AvaloniaUI.MCP/
│ ├── AvaloniaUI.MCP.csproj # Main project file
│ ├── Program.cs # MCP server entry point
│ ├── Tools/ # MCP tools implementation
│ │ ├── EchoTool.cs
│ │ ├── ProjectGeneratorTool.cs
│ │ └── XamlValidationTool.cs
│ ├── Resources/ # MCP resources (knowledge base)
│ │ ├── AvaloniaControlsResource.cs
│ │ ├── XamlPatternsResource.cs
│ │ └── MigrationGuideResource.cs
│ ├── Prompts/ # MCP prompt templates
│ │ └── AvaloniaPrompts.cs
│ └── Data/ # Knowledge base data files
│ ├── controls.json
│ ├── xaml-patterns.json
│ └── migration-guide.json
└── tests/
└── AvaloniaUI.MCP.Tests/
├── AvaloniaUI.MCP.Tests.csproj
├── ToolsTests.cs
└── XamlValidationDebugTest.cs
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.
- 4d ago First seen · 114 lines · 1,146 tokens per session scan A f68a4e0b972d
AvaloniaUI.MCP CLAUDE.md is an instructions file published in the GitHub repository decriptor/AvaloniaUI.MCP (38 stars, last pushed 1y ago), licensed MIT. It adds 1,146 tokens to every session, about $0.0057 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
KyoshinEewViewerIngen CLAUDE.md
Claude Code instructions for ingen084/KyoshinEewViewerIngen, covering claude.md, プロジェクト概要, 言語ポリシー, ビルド and メインプロジェクト.
awesome-avalonia copilot-instructions.md
Copilot instructions for AvaloniaCommunity/awesome-avalonia, covering awesome avalonia curation repository, working effectively, repository structure, essential commands and link validation - never cancel.
vscode buildNext.instructions.md
Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).
spec-kit AGENTS.md
AGENTS.md instructions for github/spec-kit, covering agents.md, about spec kit and specify, quickstart — add a new integration in 5 steps, integration architecture and integrationmanifest — file tracking.
codex AGENTS.md
AGENTS.md instructions for openai/codex, covering rust/codex-rs, the codex-core crate, code review rules, crate api surface and model visible context.
langchain AGENTS.md
AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.