Borrowing it
Nothing to install: this file belongs to EricSun0218/OpenGameAgent. 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/EricSun0218/OpenGameAgent/main/AGENTS.mdgit clone --depth 1 https://github.com/EricSun0218/OpenGameAgentWrote 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/ericsun0218/opengameagent/agents-md)<a href="https://agentmods.dev/instructions/ericsun0218/opengameagent/agents-md"><img src="https://agentmods.dev/badge/instructions/ericsun0218/opengameagent/agents-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 5.1 | $0.01042 | $0.01042 |
| Opus 5 | $0.00521 | $0.00521 |
| Sonnet 5 | $0.00208 | $0.00208 |
| Haiku 4.5 | $0.00104 | $0.00104 |
Grade A, and why
OpenGameAgent 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 6d 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 — 81 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Coding agent guide
Objective
OpenGameAgent is a small C# agent runtime for games. Preserve a compact, understandable core while supporting structured game input, safe actions, game time, multiple actors, and engine/server placement.
This repository is a framework, not a game, world editor, content marketplace, or universal entity schema.
Repository map
src/OpenGameAgent.Kernel: engine-neutral stateful model/tool loop.src/OpenGameAgent: game coordinates, runtime composition, actions, sessions, transcript compaction, memory, skills, scheduling, mailboxes, and media contracts.src/OpenGameAgent.Persistence: crash-tolerant local-file implementations.src/OpenGameAgent.DevTools: bounded trace recording, observation-only playback, and offline evaluation.src/OpenGameAgent.Providers.OpenAICompatible: streaming chat-completions transport.src/OpenGameAgent.Providers.MediaHttp: generic remote or local media-generation transport.src/OpenGameAgent.Providers.OpenAI.Images: official OpenAI image generation/edit transport.src/OpenGameAgent.Providers.Volcengine.Images: Volcengine Ark/Seedream image generation/edit transport.src/OpenGameAgent.Media: media model routing plus persistent generated-asset lifecycle contracts.src/OpenGameAgent.Client: engine-compatible JSON/SSE service client.src/OpenGameAgent.Runtime.Protocol: optional versioned, transport-neutral Session/Run/Turn/Item contract.src/OpenGameAgent.Runtime.Hosting: optional in-process Runtime projection and bounded replay journal.src/OpenGameAgent.Models.Credentials.Windows: optional Windows CurrentUser DPAPI credential persistence.src/OpenGameAgent.Server: optional C# .NET 8 host.engines/godot: Godot .NET package and tests.engines/unity: Unity UPM package and tests.engines/unreal: native Unreal Engine C++ plugin for the remote JSON/SSE placement.examples: buildable integration examples.tools/OpenGameAgent.DevTools.Cli: local trace inspection and CI evaluation CLI.tests: focused unit and integration tests.
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.
- 6d ago First seen · 81 lines · 1,042 tokens per session scan A ef7430baafa1
OpenGameAgent AGENTS.md is an instructions file published in the GitHub repository EricSun0218/OpenGameAgent (46 stars, last pushed 5d ago), licensed MIT. It adds 1,042 tokens to every session, about $0.0052 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
next.js AGENTS.md
AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.
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.
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).
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, applying the notice (cutover) and fallback chain (never fail the build).
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.
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.