What is GameDev-MCP-Server AGENTS.md?

Project instructions for building and running a C# server that connects game engines such as Unity, Godot, and Unreal to tools through MCP. MCP is a protocol for letting software tools communicate with an agent.

Use them to develop, test, package, containerize, and release the GameDev MCP server, including local builds against sibling .NET projects.

They give contributors the repository-specific commands and distinctions needed to build, run, publish, and release the server correctly.

How IvanMurzak/GameDev-MCP-Server configures Codex and OpenCode

Reuse

Borrowing it

Nothing to install: this file belongs to IvanMurzak/GameDev-MCP-Server. 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/IvanMurzak/GameDev-MCP-Server/main/AGENTS.md

Clone the repo

git clone --depth 1 https://github.com/IvanMurzak/GameDev-MCP-Server

Made for: Codex, OpenCode.

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/ivanmurzak/gamedev-mcp-server/agents-md/github.svg)](https://agentmods.dev/instructions/ivanmurzak/gamedev-mcp-server/agents-md)

Your own site

<a href="https://agentmods.dev/instructions/ivanmurzak/gamedev-mcp-server/agents-md"><img src="https://agentmods.dev/badge/instructions/ivanmurzak/gamedev-mcp-server/agents-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.

Your own site · 80×15

<a href="https://agentmods.dev/instructions/ivanmurzak/gamedev-mcp-server/agents-md"><img src="https://agentmods.dev/badge/instructions/ivanmurzak/gamedev-mcp-server/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 1,262 This file is loaded in full into every session.

When invoked 1,262 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	$0.01262	$0.01262
Opus 5.5	$0.00505	$0.00505
Sonnet 5.5	$0.00252	$0.00252
Haiku 4.5	$0.00126	$0.00126

Measured 3d ago against content hash 2a9af901cc2a, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

GameDev-MCP-Server 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 3d 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.

AGENTS.md · 65 lines

How it starts

The opening of the file, as written. The whole thing — 65 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AGENTS.md

Engine-agnostic C# ASP.NET Core MCP server shared by the Unity-MCP, Godot-MCP and Unreal-MCP engine plugins. Thin host (src/Program.cs) over the NuGet packages com.IvanMurzak.McpPlugin.Server + com.IvanMurzak.ReflectorNet — ALL real server logic lives in those packages; this repo contains no engine-specific code. Distributed as standalone executables (gamedev-mcp-server-<rid>.zip), a Docker image (aigamedeveloper/mcp-server), and a global dotnet tool on NuGet (com.IvanMurzak.GameDev.MCP.Server, command gamedev-mcp-server).

NOT AI-Game-Dev-Server (the ai-game.dev cloud LLM/billing proxy) — this is the local MCP stdio/http proxy host shared by the engine plugins.

Build / run

dotnet build com.IvanMurzak.GameDev.MCP.Server.csproj
dotnet run --project com.IvanMurzak.GameDev.MCP.Server.csproj -- --client-transport stdio --port 8080

All-platform self-contained publish: python build/build_all.py [Debug|Release] [rid ...] (stdlib Python 3.9+, any OS; --no-zip, then --zip-only after code-signing). It anchors publish/ to the repo root, so any cwd works. No PowerShell in this repo: workflow steps call Python.
Local dev against sibling MCP-Plugin-dotnet/ReflectorNet checkouts: dotnet build -p:UseLocalMcpPlugin=true.

Layout

src/ — the host: Program.cs, startup/auth defaults (Startup/), the configure command (Configure/), logging adapters (Utils/). New host code goes here, not engine or server logic.
tests/GameDev.MCP.Server.Tests/ — xUnit tests (excluded from the main csproj build and pack).
build/ — the cross-platform publish script (build_all.py) and the macOS entitlements.
scripts/ — the release dependency guard + its offline unit tests (scripts/tests/, run by PR CI).
docs/NUGET.md — the NuGet readme; docs/img/ — README images.
.github/workflows/ — PR tests and the dispatch-only release with its deploy_* children.
Root: the csproj, server.json (package half of the one registry listing io.github.IvanMurzak/Unity-MCP; the listing is published from the Unity-MCP repo, never from here), Dockerfile, appsettings.json, NLog.config.

Read the full file on GitHub · 65 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.

3d ago Changed · +29 tokens per session 2a9af901cc2a
7d ago Changed · +1 lines · +32 tokens per session c754124c15df
8d ago Changed · +6 lines · +158 tokens per session 8ce841f3612b
26d ago First seen · 58 lines · 1,043 tokens per session scan A d37d76656d60

Subscribe to this mod's changes

GameDev-MCP-Server AGENTS.md is an instructions file published in the GitHub repository IvanMurzak/GameDev-MCP-Server (18 stars, last pushed yesterday), licensed Apache-2.0. It adds 1,262 tokens to every session, about $0.0050 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 2026-10-12.

C# and .NET Game development Languages ai dotnet godot mcp model-context-protocol

GameDev-MCP-Server AGENTS.md next to 6 instructions from other repositories
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GameDev-MCP-Server AGENTS.mdIvanMurzak/GameDev-MCP-Server	Instructions file	18	yesterday	Apache-2.0	A	1,262	Codex, OpenCode
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GameDev-MCP-Server: Instructions file for Codex