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/elbruno/elbruno.modelcontextprotocol/copilot-instructionsgit clone --depth 1 https://github.com/elbruno/ElBruno.ModelContextProtocolWhat 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 | $0.02648 | $0.02648 |
| Opus 5 | $0.01324 | $0.01324 |
| Sonnet 5 | $0.00530 | $0.00530 |
| Haiku 4.5 | $0.00265 | $0.00265 |
Grade A, and why
ElBruno.ModelContextProtocol copilot-instructions.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 — 313 lines — stays where its author put it; the contents beside it link to each section on GitHub.
ElBruno .NET Repository Conventions
These instructions define the conventions for ElBruno's .NET NuGet library repositories. Apply them when creating, modifying, or reviewing any project in this repo.
Repository Structure
{ProjectName}/
├── README.md # Project overview, badges, quick start
├── LICENSE # MIT License
├── Directory.Build.props # Shared MSBuild properties (all projects)
├── global.json # SDK version with rollForward
├── .gitignore # .NET + IDE + OS ignores
├── {ProjectName}.slnx # XML-based solution file
├── src/
│ ├── {Owner}.{ProjectName}.{Package}/ # Library projects
│ ├── tests/{Package}.Tests/ # xUnit test projects
│ └── samples/{SampleName}/ # Sample/demo apps
├── docs/ # All documentation except README.md and LICENSE
├── images/ # All images including nuget_logo.png
└── .github/workflows/ # CI/CD workflows
- Root files only: README.md, LICENSE, Directory.Build.props, global.json, .gitignore, solution file
- All source code (libraries, tests, samples) lives under
src/ - All documentation (except README.md and LICENSE) lives under
docs/ - All images live under
images/, includingnuget_logo.pngfor NuGet packages
Solution Format
- Use
.slnx(XML-based solution format), not.sln - All projects (libraries, tests, samples) must be included in the solution file
- Use
<Folder>elements for logical grouping:/src/,/src/tests/,/src/samples/
Project Conventions
Library Projects
- Target
net8.0;net10.0(multi-target: LTS + latest) - Package naming:
{Owner}.{ProjectName}.{Feature}(e.g.,ElBruno.QRCodeGenerator.Svg) - Each packable project must include the NuGet icon:
<None Include="$(MSBuildThisFileDirectory)..\..\images\nuget_logo.png" Pack="true" PackagePath="" /> - Include
<InternalsVisibleTo>for the corresponding test project - Enable symbol packages:
<IncludeSymbols>true</IncludeSymbols>,<SymbolPackageFormat>snupkg</SymbolPackageFormat> - Enable deterministic CI builds:
<ContinuousIntegrationBuild Condition="'$(GITHUB_ACTIONS)' == 'true'">true</ContinuousIntegrationBuild>
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 · 313 lines · 2,648 tokens per session scan A fa99f7611dee
ElBruno.ModelContextProtocol copilot-instructions.md is an instructions file published in the GitHub repository elbruno/ElBruno.ModelContextProtocol (8 stars, last pushed 2mo ago), licensed MIT. It adds 2,648 tokens to every session, about $0.0132 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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