Borrowing it
Nothing to install: this file belongs to Azure-Samples/PhotoAlbum. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/Azure-Samples/PhotoAlbum/main/CLAUDE.mdgit clone --depth 1 https://github.com/Azure-Samples/PhotoAlbumWrote 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/azure-samples/photoalbum/claude-md)<a href="https://agentmods.dev/instructions/azure-samples/photoalbum/claude-md"><img src="https://agentmods.dev/badge/instructions/azure-samples/photoalbum/claude-md/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.
<a href="https://agentmods.dev/instructions/azure-samples/photoalbum/claude-md"><img src="https://agentmods.dev/badge/instructions/azure-samples/photoalbum/claude-md.svg" alt="Reviewed on agentmods" width="80" 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 5.1 | $0.00752 | $0.00752 |
| Opus 5 | $0.00376 | $0.00376 |
| Sonnet 5 | $0.00150 | $0.00150 |
| Haiku 4.5 | $0.00075 | $0.00075 |
Grade A, and why
PhotoAlbum 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 9d 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 — 93 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
PhotoAlbum is an ASP.NET Core 9.0 Razor Pages application for photo gallery management. It's designed as a demo for GitHub Copilot app modernization, showcasing migration from local file storage to Azure Blob Storage.
Tech Stack:
- ASP.NET Core 9.0 (Razor Pages)
- Entity Framework Core 9.0 with SQL Server LocalDB
- SixLabors.ImageSharp for image processing
- xUnit for testing
Build and Run
Build the solution:
dotnet build PhotoAlbum.sln
Run the application:
dotnet run --project PhotoAlbum/PhotoAlbum.csproj
Run all tests:
dotnet test PhotoAlbum.Tests/PhotoAlbum.Tests.csproj
Run specific test:
dotnet test PhotoAlbum.Tests/PhotoAlbum.Tests.csproj --filter "FullyQualifiedName~TestMethodName"
Database migrations:
# Add new migration
dotnet ef migrations add MigrationName --project PhotoAlbum/PhotoAlbum.csproj
# Apply migrations
dotnet ef database update --project PhotoAlbum/PhotoAlbum.csproj
Architecture
Core Components:
-
PhotoService (PhotoAlbum/Services/PhotoService.cs) - Service layer handling photo operations:
- File upload with validation (size, MIME type)
- Image dimension extraction via ImageSharp
- File storage in
wwwroot/uploads/with GUID-based filenames - Database persistence with transaction rollback on failure
- Photo retrieval and deletion
-
PhotoAlbumContext (PhotoAlbum/Data/PhotoAlbumContext.cs) - EF Core DbContext:
- Single
PhotosDbSet - Descending index on
UploadedAtfor chronological queries
- Single
-
Photo Model (PhotoAlbum/Models/Photo.cs) - Represents uploaded photos with:
- Dual filename tracking (original + stored GUID name)
- File metadata (size, MIME type, dimensions)
- UTC timestamps
-
Razor Pages (PhotoAlbum/Pages/):
Index.cshtml- Gallery grid view with upload functionalityDetail.cshtml- Full-size photo display with metadata and navigationPhotoFile.cshtml- File retrieval endpoint
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.
- 9d ago First seen · 93 lines · 752 tokens per session scan A 969c6cb142af
PhotoAlbum CLAUDE.md is an instructions file published in the GitHub repository Azure-Samples/PhotoAlbum (2 stars, last pushed 1mo ago), licensed MIT. It adds 752 tokens to every session, about $0.0038 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 2026-08-31.
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