mtga: Instructions file for Codex

AGENTS.md

mtga AGENTS.md is an instructions file for Codex, OpenCode from BiFangKNT/mtga. It costs 890 tokens per session, scanned A, original, AGPL-3.0.

Repository-specific instructions for the mtga project. They describe its layout, build and test commands, coding style, naming rules, and testing guidance.

In plain words
What is it for?
Use them when changing the mtga repository, especially when deciding where code belongs, how to build or test it, and how changes should be written.
Why use it?
They give a coding agent the project's local rules instead of relying only on general programming conventions. The available description does not say that they provide any tool or feature.

Instructions file for CodexOpenCode

Written for Codex and OpenCode: the file is AGENTS.md.

This is BiFangKNT/mtga's own configuration. It tells Codex and OpenCode how to work on mtga itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything mtga configures →

About the project

MTGA is a local proxy application that lets users work around an IDE's fixed model-provider restrictions by forwarding requests to configured AI services. It supports Windows and macOS and connects the Trae IDE with providers including OpenAI-compatible, Anthropic, and Gemini services.

BiFangKNT/mtga · 1,162 stars · on GitHub

Reuse

Borrowing it

Nothing to install: this file belongs to BiFangKNT/mtga. 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/BiFangKNT/mtga/tauri/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/BiFangKNT/mtga

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.

agentmods badge for mtga AGENTS.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/bifangknt/mtga/agents-md/github.svg)](https://agentmods.dev/instructions/bifangknt/mtga/agents-md)
Your own site
<a href="https://agentmods.dev/instructions/bifangknt/mtga/agents-md"><img src="https://agentmods.dev/badge/instructions/bifangknt/mtga/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.

agentmods 80×15 button for mtga AGENTS.md

Your own site · 80×15
<a href="https://agentmods.dev/instructions/bifangknt/mtga/agents-md"><img src="https://agentmods.dev/badge/instructions/bifangknt/mtga/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 890 This file is loaded in full into every session.
When invoked 890 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 unknown 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00890 $0.00890
Opus 5.5 $0.00356 $0.00356
Sonnet 5.5 $0.00178 $0.00178
Haiku 4.5 $0.00089 $0.00089

Measured 2mo ago against content hash 98ea38594a23, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

mtga 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.

AGENTS.md · 54 lines

The source is not reproduced here

Licensed AGPL-3.0

The repository is licensed AGPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

Read it on GitHub

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.

  1. 2mo ago First seen · 54 lines · 890 tokens per session scan A 98ea38594a23

Subscribe to this mod's changes

mtga AGENTS.md is an instructions file published in the GitHub repository BiFangKNT/mtga (1,162 stars, last pushed 4mo ago), licensed AGPL-3.0. It adds 890 tokens to every session, about $0.0036 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 2026-09-04.

Related

mtga AGENTS.md compared with instructions from other repositories

mtga AGENTS.md next to 6 instructions from other repositories
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mtga AGENTS.mdBiFangKNT/mtgaInstructions file1.2k4mo agoAGPL-3.0A890Codex, OpenCode
vscode buildNext.instructions.mdmicrosoft/vscodeInstructions file195ktodayMITA9,719GitHub Copilot
next.js AGENTS.mdvercel/next.jsInstructions file143ktodayMITA7,461Codex, OpenCode
langchain AGENTS.mdlangchain-ai/langchainInstructions file149ktodayMITA4,680Codex, OpenCode
vscode oss-third-party-notices.instructions.mdmicrosoft/vscodeInstructions file195ktodayMITA5,516GitHub Copilot
vscode copilot-instructions.mdmicrosoft/vscodeInstructions file195ktodayMITA3,093GitHub Copilot
deepseek-harness AGENTS.mddeepseek-ai/deepseek-harnessInstructions file274k2d agoMITA4,313Codex, OpenCode