Borrowing it
Nothing to install: this file belongs to IGPenguin/hades-gate. 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/IGPenguin/hades-gate/chaos/GEMINI.mdgit clone --depth 1 https://github.com/IGPenguin/hades-gateWrote 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/igpenguin/hades-gate/gemini-md)<a href="https://agentmods.dev/instructions/igpenguin/hades-gate/gemini-md"><img src="https://agentmods.dev/badge/instructions/igpenguin/hades-gate/gemini-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/igpenguin/hades-gate/gemini-md"><img src="https://agentmods.dev/badge/instructions/igpenguin/hades-gate/gemini-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 | $0.00795 | $0.00795 |
| Opus 5.5 | $0.00318 | $0.00318 |
| Sonnet 5.5 | $0.00159 | $0.00159 |
| Haiku 4.5 | $0.00080 | $0.00080 |
Grade A, and why
hades-gate 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 1mo 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.
How it starts
The opening of the file, as written. The whole thing — 69 lines — stays where its author put it; the contents beside it link to each section on GitHub.
GEMINI.md
This file provides guidance to the Gemini CLI agent when working with this repository.
What This Is
Hades Gate is a meta-framework that separates the Architect from the Builder. In the legacy path, you (Gemini) are the Architect - you analyze intent and project context, then generate the Hexalogy proposals. The Builder (Claude) executes the chosen path.
The primary path is now a native Claude Code skill (/hades). The Gemini CLI path documented here remains functional for users without Claude Code.
Architecture
The .hades/ Folder
| File | Role | Git-tracked? |
|---|---|---|
manifesto.md |
Global coding standards for the Architect | Yes |
papyrus.md |
Template defining the 6-path proposal structure | Yes |
styx.md |
User's seeds (raw intent) - consumed by ignite |
No |
arche.md |
Project DNA snapshot generated by survey |
No |
prions.md |
Your 6-path proposals - output of ignite |
No |
erebus.env |
API keys and secrets | No |
The Ghostwire Protocol
Projects use hades link to symlink their .hades/ directory to this repository. You operate on this shared state.
Core Mandates
The Hexalogy
When generating proposals via hades ignite, always produce all six paths plus the Synthesis:
- Option A - The Spark (Fastest path): Minimal friction, immediate result.
- Option B - The Weave (Systems integration): Leveraging existing opportunities.
- Option C - The Apex (High polish): High quality, clean architecture.
- Option D - The Echo (Standard patterns): Proven, battle-tested solution.
- Option E - The Rift (Experimental): Outside-the-box or novel approach.
- Option F - The Chimera (Flashy hacks): Flashy results with a pragmatic interior.
- The Synthesis (Refined convergence): A curated selection from the strongest elements above.
State Awareness
- Arche is Ground Truth:
arche.mdcontains the project identity, file tree, and API surface. - Drift Detection: The framework warns if the project has changed since the last survey. If stale, request a re-survey via
hades survey.
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.
- 1mo ago First seen · 69 lines · 795 tokens per session scan A d26cfc5be80e
hades-gate GEMINI.md is an instructions file published in the GitHub repository IGPenguin/hades-gate (1 stars, last pushed 1mo ago), licensed MIT. It adds 795 tokens to every session, about $0.0032 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.
Other instructions, from other repositories
vibe-coding-prompt-template backend.instructions.md
Instructions for KhazP/vibe-coding-prompt-template: Read AGENTS.md, agentdocs/techstack.md, and agentdocs/codepatterns.md.
vscode buildNext.instructions.md
Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).
next.js AGENTS.md
AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, cache eligibility and rollout and applying the notice (cutover).
langchain AGENTS.md
AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.
vscode copilot-instructions.md
Copilot instructions for microsoft/vscode, covering vs code copilot instructions, project overview, root folders, core architecture (src/ folder) and built-in extensions (extensions/ folder).