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/dmbyer/hedron/copilot-instructionsgit clone --depth 1 https://github.com/dmbyer/HedronWrote 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/dmbyer/hedron/copilot-instructions)<a href="https://agentmods.dev/instructions/dmbyer/hedron/copilot-instructions"><img src="https://agentmods.dev/badge/instructions/dmbyer/hedron/copilot-instructions.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 | $0.00087 | $0.00087 |
| Opus 5 | $0.00044 | $0.00044 |
| Sonnet 5 | $0.00017 | $0.00017 |
| Haiku 4.5 | $0.00009 | $0.00009 |
Grade A, and why
Hedron 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 4d 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.
- 4d ago First seen · 4 lines · 87 tokens per session scan A 74b669abed94
Hedron copilot-instructions.md is an instructions file published in the GitHub repository dmbyer/Hedron (11 stars, last pushed 18d ago), with no licence file. It adds 87 tokens to every session, about $0.0004 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
fluffos CLAUDE.md
Claude Code instructions for fluffos/fluffos, a project described as: Actively maintained LPMUD driver (LPC interpreter, MudOS fork).
Claude-Code-Game-Master CLAUDE.md
Claude Code instructions for Sstobo/Claude-Code-Game-Master, covering gm system — ai game master (lean core), first-time setup (auto-detect, run before greeting), the core loop, stakes & death (this is a loseable game) and death protocol (pc hits 0 and dies).
Claude-Code-Game-Master AGENTS.md
AGENTS.md instructions for Sstobo/Claude-Code-Game-Master, covering agent notes and tickets.
Slime AGENTS.md
AGENTS.md instructions for bitqs/Slime, covering agents.md — read this first, then you can ship, what slime is, the prime directive (never violate), the other hard rules and where things live.
Slime CLAUDE.md
Claude Code instructions for bitqs/Slime, covering claude.md, what this is, commands, eyeball the arena without a real session and open http://127.0.0.1:4118 (?calm=1 = flash-free).
fluffos AGENTS.md
AGENTS.md instructions for fluffos/fluffos, covering fluffos agent guide (agents.md), 1. codebase architecture & key components, 2. package api & vm stack guidance, unified inclusion and spec files.