Borrowing it
Nothing to install: this file belongs to obrien-matthew/mcp-steam. 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/obrien-matthew/mcp-steam/main/AGENTS.mdgit clone --depth 1 https://github.com/obrien-matthew/mcp-steamWrote 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/obrien-matthew/mcp-steam/agents-md)<a href="https://agentmods.dev/instructions/obrien-matthew/mcp-steam/agents-md"><img src="https://agentmods.dev/badge/instructions/obrien-matthew/mcp-steam/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.
<a href="https://agentmods.dev/instructions/obrien-matthew/mcp-steam/agents-md"><img src="https://agentmods.dev/badge/instructions/obrien-matthew/mcp-steam/agents-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 | $0.00289 | $0.00289 |
| Opus 5.5 | $0.00116 | $0.00116 |
| Sonnet 5.5 | $0.00058 | $0.00058 |
| Haiku 4.5 | $0.00029 | $0.00029 |
Grade A, and why
mcp-steam 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 2mo 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.
Copies of this mod
4 near-identical copies found in the catalogue:
- mcp-mealie AGENTS.md — 88% identical, 15 lines differ
- mcp-spotify AGENTS.md — 88% identical, 14 lines differ
- mcp-plex AGENTS.md — 86% identical, 14 lines differ
- mcp-garmin AGENTS.md — 84% identical, 14 lines differ
What it actually says
mcp-steam
MCP server for Steam.
Conventions
Follows the shared conventions from mcp-template (see its AGENTS.md for full rationale): data tools return real dict/list[dict] directly (never json.dumps); action/status tools may return a human-readable -> str, as may tools whose result is genuinely a single string (IDs, versions); errors are raised, never caught and returned as strings; empty results are empty containers ({}, []), not sentinel messages.
Layout
src/steam_mcp/server.py-- MCP tool definitionssrc/steam_mcp/client.py-- HTTP/API client wrappersrc/steam_mcp/formatting.py-- response formatters that produce LLM-friendly dicts (nojson.dumps)src/steam_mcp/validation.py-- input validatorssrc/steam_mcp/auth.py-- credential loading
Workflow
uv sync # install deps
uv run pytest -q # run tests
uv run ruff check . # lint
uv run ruff format . # format
uv run pyright src/ # typecheck
lefthook install # set up git hooks (one-time)
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.
- 2mo ago Changed · -22 lines · -225 tokens per session b7ba4c72302c
- 2mo ago First seen · 49 lines · 514 tokens per session scan A 7cc4cee77922
mcp-steam AGENTS.md is an instructions file published in the GitHub repository obrien-matthew/mcp-steam (3 stars, last pushed 2mo ago), licensed MIT. It adds 289 tokens to every session, about $0.0012 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-steam AGENTS.md compared with instructions from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| mcp-steam AGENTS.mdobrien-matthew/mcp-steam | Instructions file | 3 | 2mo ago | MIT | A | 289 | Codex, OpenCode |
| vscode buildNext.instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 9,719 | GitHub Copilot |
| next.js AGENTS.mdvercel/next.js | Instructions file | 143k | yesterday | MIT | A | 7,461 | Codex, OpenCode |
| langchain AGENTS.mdlangchain-ai/langchain | Instructions file | 149k | yesterday | 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 |