snosi: Command for GitHub Copilot

.github/prompts/README.md

README is a command for GitHub Copilot from frostyard/snosi. It costs 0 tokens per session (303 once invoked), scanned A, original, MIT.

A collection of reusable prompts for AI coding agents working in one repository. Each prompt covers a focused task and points the agent to the project’s architecture and operating rules.

In plain words
What is it for?
Use the prompts for adding system extensions, changing update paths, synchronising documentation, or investigating a failed CI workflow.
Why use it?
It avoids rewriting task instructions and helps the agent follow repository-specific contracts when making changes.

Command for GitHub Copilot

Written for GitHub Copilot: a Copilot chat mode or prompt. Also seen: mentions CLAUDE.md.

This is frostyard/snosi's own configuration. It tells GitHub Copilot how to work on snosi itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything snosi configures →

Reuse

Borrowing it

Nothing to install: this file belongs to frostyard/snosi. 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/frostyard/snosi/main/.github/prompts/README.md
Clone the repo
git clone --depth 1 https://github.com/frostyard/snosi

Made for: GitHub Copilot.

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.

agentmods badge for README

README.md
[![agentmods](https://agentmods.dev/badge/commands/frostyard/snosi/readme.svg)](https://agentmods.dev/commands/frostyard/snosi/readme)
Your own site
<a href="https://agentmods.dev/commands/frostyard/snosi/readme"><img src="https://agentmods.dev/badge/commands/frostyard/snosi/readme.svg" alt="Measured on agentmods" height="20"></a>
Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 303 The whole file, excluding the scripts and references it only reads on demand.
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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00000 $0.00303
Opus 5 $0.00000 $0.00151
Sonnet 5 $0.00000 $0.00061
Haiku 4.5 $0.00000 $0.00030

Measured yesterday against content hash 112d7a870b90, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

README 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 yesterday.

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.

.github/prompts/README.md · 25 lines

What it actually says

Prompts catalog

Reusable prompts for AI coding agents working in this repository.

Each file is a task-scoped prompt: paste it (or reference it) at the start of a session, then replace the <...> placeholders with the specifics of your task. Every prompt assumes the agent has first read CLAUDE.md and docs/design/overview.md, which hold the architecture, contracts, and operational constraints that most mistakes in this repository come from ignoring.

Prompt Use it for
add-sysext.md Adding or changing a system extension under mkosi.images/
native-ab-change.md Touching the native A/B profiles, channels, or update path
update-docs.md Bringing CLAUDE.md, README.md, and docs/ back in sync with code
triage-ci-failure.md Investigating a failed workflow run

Conventions

  • Prompts describe how to work here, not project status; keep status in CLAUDE.md and docs/.
  • Keep each prompt self-contained and under roughly one screen.
  • When a contract changes (for example docs/native-ab-contracts.md), update the prompt that points at it in the same pull request.
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.

  1. yesterday First seen · 25 lines · 0 tokens per session scan A 112d7a870b90

Subscribe to this mod's changes

README is a command published in the GitHub repository frostyard/snosi (24 stars, last pushed yesterday), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 303 tokens. 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 2026-09-06.