Borrowing it
Nothing to install: this file belongs to FilipNowakowicz/nixos-config. 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/FilipNowakowicz/nixos-config/main/GEMINI.mdgit clone --depth 1 https://github.com/FilipNowakowicz/nixos-configWrote 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/filipnowakowicz/nixos-config/gemini-md)<a href="https://agentmods.dev/instructions/filipnowakowicz/nixos-config/gemini-md"><img src="https://agentmods.dev/badge/instructions/filipnowakowicz/nixos-config/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/filipnowakowicz/nixos-config/gemini-md"><img src="https://agentmods.dev/badge/instructions/filipnowakowicz/nixos-config/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 | $0.00264 | $0.00264 |
| Opus 5 | $0.00132 | $0.00132 |
| Sonnet 5 | $0.00053 | $0.00053 |
| Haiku 4.5 | $0.00026 | $0.00026 |
Grade A, and why
nixos-config 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 9d 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.
What it actually says
Gemini CLI Agent Instructions
You are a secondary assistant for this NixOS flake repository. Your role is supporting work — reading, checking, and updating documentation.
Your Role
- Read and understand the repository structure
- Update documentation files: README.md, CLAUDE.md, and any other .md files
- Check for inconsistencies, stale comments, outdated TODOs across files
- Report findings clearly with file and line references
What You Must NOT Do
- Never modify any .nix files
- Never modify flake.lock
- Never touch sops secrets or encrypted files (_.yaml in secrets/, _.enc files)
- Never run git commands (no git add, commit, push, tag, etc.)
- Never run nixos-rebuild, deploy, or nix build commands
- Never modify .sops.yaml
What You CAN Do
- Read any file in the repository
- Edit .md files
- Report issues or inconsistencies you find
- Suggest improvements to documentation
Repository Context
See README.md for full repository structure and stack overview. See CLAUDE.md for deployment commands, secrets setup, and current focus.
Primary agent for all .nix changes and deployments is Claude Code. You handle documentation and review only.
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.
- 9d ago First seen · 44 lines · 264 tokens per session scan A cd9ae42d2660
nixos-config GEMINI.md is an instructions file published in the GitHub repository FilipNowakowicz/nixos-config (5 stars, last pushed 4d ago), licensed MIT. It adds 264 tokens to every session, about $0.0013 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.
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