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/reporails/rules/copilot-instructionsgit clone --depth 1 https://github.com/reporails/rulesWhat 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 | $0.01785 | $0.01785 |
| Opus 5 | $0.00892 | $0.00892 |
| Sonnet 5 | $0.00357 | $0.00357 |
| Haiku 4.5 | $0.00178 | $0.00178 |
Grade A, and why
rules copilot-instructions.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.
The source is not reproduced here
No licence file
A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.
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 · 198 lines · 1,785 tokens per session scan A 957b7af8aa26
rules copilot-instructions.md is an instructions file published in the GitHub repository reporails/rules (11 stars, last pushed 6mo ago), with no licence file. It adds 1,785 tokens to every session, about $0.0089 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 2026-08-30.
Other instructions, from other repositories
plumbline CLAUDE.md
Instructions for sroberts/plumbline, covering claude.md, project status, build & test, architecture in brief and generated and derived files — don't hand-edit.
agentic-tech-debt AGENTS.md
Instructions for bcanfield/agentic-tech-debt: The agent instructions for this repo live in CLAUDE.md — one source of truth for every coding agent. Read it and follow it as written; it applies to Codex exactly as it does to Claude Code.
zuvo CLAUDE.md
Instructions for greglas75/zuvo, covering zuvo plugin — project guide, what this repo is, tech stack, how to update after making changes and for yourself (dev testing, no marketplace push).
ai-pr-bot CLAUDE.md
Instructions for sgharlow/ai-pr-bot, covering claude.md, common development commands, install dependencies, development mode with hot reload and build the project.
agentic-hardening-skill AGENTS.md
Instructions for Calvin-LLC/agentic-hardening-skill, covering harden and rules.
dynos-work CLAUDE.md
Instructions for dynos-fit/dynos-work, covering claude.md, release hygiene, what ci does and what you do.