What is gb-recompiled AGENTS.md?

A set of repository instructions for developing GB Recompiled, a project that turns Game Boy ROM programs into generated C code linked to a shared runtime. A ROM is the software image read by a Game Boy.

Use it when building or testing the recompiler, working on Game Boy or Game Boy Color support, checking accuracy, generating projects, or following the project's documentation and validation rules.

It explains where the compiler, runtime, tests, tools, documentation, and generated output live, reducing the chance of changing the wrong part or using copyrighted game files incorrectly.

How arcanite24/gb-recompiled configures Codex and OpenCode

Reuse

Borrowing it

Nothing to install: this file belongs to arcanite24/gb-recompiled. 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/arcanite24/gb-recompiled/main/AGENTS.md

Clone the repo

git clone --depth 1 https://github.com/arcanite24/gb-recompiled

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/arcanite24/gb-recompiled/agents-md/github.svg)](https://agentmods.dev/instructions/arcanite24/gb-recompiled/agents-md)

Your own site

<a href="https://agentmods.dev/instructions/arcanite24/gb-recompiled/agents-md"><img src="https://agentmods.dev/badge/instructions/arcanite24/gb-recompiled/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/arcanite24/gb-recompiled/agents-md"><img src="https://agentmods.dev/badge/instructions/arcanite24/gb-recompiled/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 2,762 This file is loaded in full into every session.

When invoked 2,762 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	$0.02762	$0.02762
Opus 5.5	$0.01105	$0.01105
Sonnet 5.5	$0.00552	$0.00552
Haiku 4.5	$0.00276	$0.00276

Measured 2mo ago against content hash 284174357d07, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

gb-recompiled 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 · 215 lines

How it starts

The opening of the file, as written. The whole thing — 215 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Working on GB Recompiled

Project and documentation map

GB Recompiled turns Game Boy ROMs into generated C and links that code with a shared runtime.

The main areas are:

recompiler/: ROM loading, decoding, analysis, IR, code generation, and the gbrecomp CLI
runtime/: CPU fallback, mappers, PPU, DMA, timers, audio, persistence, SDL, and ImGui
tests/: repository-owned synthetic and unit regression tests
tools/: accuracy, trace, differential-log, frame, audio, and benchmark helpers
roms/: local test ROMs; do not commit copyrighted commercial ROMs
output/: ad hoc generated projects and launcher builds
logs/: durable repro captures, state dumps, frame captures, and benchmark results

Documentation roles:

README.md: short public introduction and successful first build
RUNTIME.md: generated-executable controls and diagnostics
ACCURACY.md: current external-ROM test snapshot
GBC.md: CGB implementation and validation status
ANDROID.md: Android generation and APK workflow
GROUND_TRUTH_WORKFLOW.md: trace-assisted coverage, including its limits
NATIVE_PATCHES.md: exact-ROM native replacement manifest and callback ABI
PORT_MODULES.md: exact-ROM read-only port/frontend module ABI
TODO.md: prioritized live backlog
docs/CODE_IMPROVEMENT_AUDIT_2026-07-12.md: audit evidence and completed P0 remediation
docs/RECOMPILER_CORRECTNESS_AUDIT_PLAN.md: current correctness roadmap
docs/NL0_POST_WIN_PERFORMANCE_TRUTH_2026-07-14.md: three-game attribution, estimator, build footprint, and NL-0 decision
docs/NL1_ARITHMETIC_TIMER_RESULT_2026-07-14.md: retained timer optimization and scalar-oracle evidence
docs/NL2_LAZY_PPU_RESULT_2026-07-14.md: rejected lazy-PPU experiment and measured limits
docs/APU_EVENT_BATCHING_RESULT_2026-07-14.md: retained lazy APU scheduling and deterministic PCM evidence
docs/NL4_GENERATED_BUILD_RESULT_2026-07-14.md: retained generated chunking and compiler-memory evidence
docs/NL3_POST_SCHEDULER_REPROFILE_2026-07-14.md: post-scheduler compiled-region eligibility decision
docs/NL5_NATIVE_PATCH_SDK_RESULT_2026-07-14.md: native replacement tracer-bullet design and gates
docs/NATIVE_RECOMPILATION_STRATEGY_2026-07-14.md: active performance and AOT execution strategy

Read the full file on GitHub · 215 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.

2mo ago First seen · 215 lines · 2,762 tokens per session scan A 284174357d07

Subscribe to this mod's changes

gb-recompiled AGENTS.md is an instructions file published in the GitHub repository arcanite24/gb-recompiled (452 stars, last pushed 1mo ago), licensed MIT. It adds 2,762 tokens to every session, about $0.0110 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 2026-08-30.

Game development recompiler

gb-recompiled AGENTS.md next to 6 instructions from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
gb-recompiled AGENTS.mdarcanite24/gb-recompiled	Instructions file	452	1mo ago	MIT	A	2,762	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

gb-recompiled: Instructions file for Codex