What is mcp-server-obs copilot-instructions.md?

A set of project instructions for a VS Code extension that exposes an MCP server for controlling OBS Studio, a program used to record and stream video.

Use it when developing or testing OBS controls, changing MCP tools, working on the VS Code extension, or understanding the server's architecture.

It explains the .NET server, the TypeScript extension wrapper, the OBS WebSocket connection, and the project's testing and tool patterns.

How sbroenne/mcp-server-obs configures GitHub Copilot

Reuse

Borrowing it

Nothing to install: this file belongs to sbroenne/mcp-server-obs. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/sbroenne/mcp-server-obs/main/.github/copilot-instructions.md

Clone the repo

git clone --depth 1 https://github.com/sbroenne/mcp-server-obs

Made for: GitHub Copilot.

Wrote 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.

README.md

[![agentmods](https://agentmods.dev/badge/instructions/sbroenne/mcp-server-obs/copilot-instructions/github.svg)](https://agentmods.dev/instructions/sbroenne/mcp-server-obs/copilot-instructions)

Your own site

<a href="https://agentmods.dev/instructions/sbroenne/mcp-server-obs/copilot-instructions"><img src="https://agentmods.dev/badge/instructions/sbroenne/mcp-server-obs/copilot-instructions/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.

Your own site · 80×15

<a href="https://agentmods.dev/instructions/sbroenne/mcp-server-obs/copilot-instructions"><img src="https://agentmods.dev/badge/instructions/sbroenne/mcp-server-obs/copilot-instructions.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 1,158 This file is loaded in full into every session.

When invoked 1,158 The same file — it is already loaded in full.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Token cost

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	$0.01158	$0.01158
Opus 5.5	$0.00463	$0.00463
Sonnet 5.5	$0.00232	$0.00232
Haiku 4.5	$0.00116	$0.00116

Measured 1mo ago against content hash 3d6a8be20d6d, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

mcp-server-obs 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 1mo 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.

.github/copilot-instructions.md · 116 lines

How it starts

The opening of the file, as written. The whole thing — 116 lines — stays where its author put it; the contents beside it link to each section on GitHub.

OBS Studio MCP Server - Development Instructions

Project Overview

This is a VS Code extension that provides an MCP (Model Context Protocol) server for controlling OBS Studio. The MCP server is implemented in .NET 10, and the VS Code extension is a thin TypeScript wrapper that registers the server.

Architecture

mcp-server-obs/
├── src/ObsMcp.McpServer/       # .NET 10 MCP Server (main codebase)
│   ├── Program.cs              # Entry point with server instructions
│   ├── ObsClient.cs            # OBS WebSocket client wrapper
│   └── Tools/                  # 7 MCP tools with action enums
├── tests/ObsMcp.McpServer.Tests/  # Unit & integration tests
├── vscode-extension/           # VS Code extension (TypeScript)
│   └── src/extension.ts        # Registers MCP server with VS Code
└── ObsMcp.sln                  # .NET solution file

Key Technologies

.NET 10 - MCP server implementation
ModelContextProtocol 2.2.0 NuGet package - MCP SDK for .NET
obs-websocket-dotnet 5.7.0 - OBS WebSocket client library
xUnit - Unit and integration testing
TypeScript - VS Code extension only

MCP Tool Pattern

Tools follow the resource + action enum pattern (like mcp-server-excel):

Tool	Actions
`obs_connection`	Connect, Disconnect, GetStatus, GetStats
`obs_recording`	Start, Stop, Pause, Resume, GetStatus, GetSettings, SetFormat, SetQuality
`obs_streaming`	Start, Stop, GetStatus
`obs_scene`	List, GetCurrent, Set, ListSources
`obs_source`	AddWindowCapture, ListWindows, SetWindowCapture, Remove, SetEnabled
`obs_audio`	GetInputs, Mute, Unmute, GetMuteState, SetVolume, GetVolume, MuteAll, UnmuteAll
`obs_media`	SaveScreenshot

Audio Note: Recording starts with audio MUTED by default. Use muteAudio=false to include audio.

Each tool file contains:

An enum for actions (e.g., ConnectionAction)
A single [McpServerTool] method that switches on the action and returns CallToolResult
Responses wrapped with ObsToolResult.FromText(...) to preserve text and set isError for failures
Shared client access via ObsConnectionTool.GetClient()

Read the full file on GitHub · 116 lines

Changes

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.

1mo ago Changed · +3 lines · +75 tokens per session 3d6a8be20d6d
2mo ago First seen · 113 lines · 1,083 tokens per session scan A 4abc16d09240

Subscribe to this mod's changes

mcp-server-obs copilot-instructions.md is an instructions file published in the GitHub repository sbroenne/mcp-server-obs (14 stars, last pushed 2d ago), licensed MIT. It adds 1,158 tokens to every session, about $0.0046 per session on Opus 5.5. 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.

mcp-server-obs copilot-instructions.md next to 6 instructions from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
mcp-server-obs copilot-instructions.mdsbroenne/mcp-server-obs	Instructions file	14	2d ago	MIT	A	1,158	GitHub Copilot
vscode buildNext.instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	9,719	GitHub Copilot
next.js AGENTS.mdvercel/next.js	Instructions file	143k	today	MIT	A	7,461	Codex, OpenCode
langchain AGENTS.mdlangchain-ai/langchain	Instructions file	149k	today	MIT	A	4,680	Codex, OpenCode
vscode oss-third-party-notices.instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	5,516	GitHub Copilot
vscode copilot-instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	3,093	GitHub Copilot
deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness	Instructions file	274k	2d ago	MIT	A	4,313	Codex, OpenCode

mcp-server-obs: Instructions file for GitHub Copilot