What is ARC GEMINI.md?

Project instructions for ARC, also called Codename-11, when using the Gemini command-line tool. They point to shared project guidance and documentation for authentication.

Use them when working on ARC with Gemini, especially for following shared agent rules or checking authentication setup.

They give the agent the project-specific starting points it needs before making changes or setting up access.

ARC GEMINI.md — Instructions file by Codename-11

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods

npx agentmods add instructions/codename-11/arc/gemini-md

Clone the repo

git clone --depth 1 https://github.com/Codename-11/ARC

Made for: Gemini CLI.

Per session 49 This file is loaded in full into every session.

When invoked 49 The same file — it is already loaded in full.

Security scan A 0 findings. Scan, not verified.

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	$0.00049	$0.00049
Opus 5	$0.00024	$0.00024
Sonnet 5	$0.00010	$0.00010
Haiku 4.5	$0.00005	$0.00005

Measured 2d ago against content hash e4daf8d01656, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

ARC GEMINI.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 2d 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.

GEMINI.md · 7 lines

What it actually says

GEMINI.md

Instructions for Gemini CLI when working in this project.

See AGENTS.md for shared agent guidelines. See docs/authentication.md for Gemini auth setup.

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.

2d ago First seen · 7 lines · 49 tokens per session scan A e4daf8d01656

Subscribe to this mod's changes

ARC GEMINI.md is an instructions file published in the GitHub repository Codename-11/ARC (3 stars, last pushed 2mo ago), licensed MIT. It adds 49 tokens to every session, about $0.0002 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 2026-08-31.

Writing and docs agent-management ai-agents claude-code cli codex-cli developer-tools

ARC GEMINI.md

Getting it into your agent

What it costs to keep this loaded

Grade A, and why

Nothing flagged

What it actually says

GEMINI.md

What this file has done since we first saw it

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