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.
npx agentmods add instructions/dartsim/dart/gemini-mdgit clone --depth 1 https://github.com/dartsim/dartWrote 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/dartsim/dart/gemini-md)<a href="https://agentmods.dev/instructions/dartsim/dart/gemini-md"><img src="https://agentmods.dev/badge/instructions/dartsim/dart/gemini-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 | $0.00097 | $0.00097 |
| Opus 5 | $0.00048 | $0.00048 |
| Sonnet 5 | $0.00019 | $0.00019 |
| Haiku 4.5 | $0.00010 | $0.00010 |
Grade A, and why
dart 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 today.
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.
What it actually says
Gemini Instructions
Read AGENTS.md first. It is the pointer board and source of
truth for all AI agents.
Also load docs/ai/principles.md; it is the compact,
session-wide AI principles file referenced by AGENTS.md.
This file exists for Gemini CLI compatibility. Keep shared instructions in
AGENTS.md and docs/ai/principles.md.
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.
- today First seen · 11 lines · 97 tokens per session scan A 385011a04cbb
dart GEMINI.md is an instructions file published in the GitHub repository dartsim/dart (1,201 stars, last pushed today), licensed BSD-2-Clause. It adds 97 tokens to every session, about $0.0005 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 2026-09-03.
Other instructions, from other repositories
chrono AGENTS.md
AGENTS.md instructions for projectchrono/chrono, covering repository guidelines, developers vs. users, project structure & module organization, build, test, and development commands and build system conventions.
text-to-cad AGENTS.md
AGENTS.md instructions for earthtojake/text-to-cad, covering agents.md, branch and layout first, release workflow, repo map and repo rules.
mcap AGENTS.md
Instructions for foxglove/mcap, covering development guide, design principles, general prerequisites, pull requests and typescript.
Foam-Agent AGENTS.md
Instructions for csml-rpi/Foam-Agent, covering agents.md, what is foam-agent?, build and run, environment setup and run a simulation.
URDF-Studio CLAUDE.md
Claude Code instructions for OpenLegged/URDF-Studio, covering urdf studio agent guide, 语言偏好, 需求澄清与第一性原理, src/ 目录结构 and scripts/ 目录结构.
bagel AGENTS.md
AGENTS.md instructions for Extelligence-ai/bagel, covering bagel for agents, set up bagel for a user, use bagel well and develop on bagel.