Borrowing it
Nothing to install: this file belongs to haevg-rz/decision-trail. 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/haevg-rz/decision-trail/main/.github/copilot-instructions.mdgit clone --depth 1 https://github.com/haevg-rz/decision-trailWrote 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/haevg-rz/decision-trail/copilot-instructions)<a href="https://agentmods.dev/instructions/haevg-rz/decision-trail/copilot-instructions"><img src="https://agentmods.dev/badge/instructions/haevg-rz/decision-trail/copilot-instructions/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/haevg-rz/decision-trail/copilot-instructions"><img src="https://agentmods.dev/badge/instructions/haevg-rz/decision-trail/copilot-instructions.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 | $0.00218 | $0.00218 |
| Opus 5.5 | $0.00087 | $0.00087 |
| Sonnet 5.5 | $0.00044 | $0.00044 |
| Haiku 4.5 | $0.00022 | $0.00022 |
Grade A, and why
decision-trail 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 2mo 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
decision-trail — Copilot instructions
This file is intentionally thin. For working in this repo, the entry point is
AGENTS.md at the repository root — the terse reference for the
contract, lifecycle, layout, conventions, and agent guidance. New to the method?
Read the guide first: guide.md. (The canonical method spec lives
in starter/docs/working-method.md; this
repo's AGENTS.md is a derived rendering of it.)
Read AGENTS.md first. It is tool-agnostic. Everything you
need to work in this repo is there, including:
- the eight-promise contract,
- the idea → proposal → decision → plan → execution lifecycle and where each artifact lives,
- the cross-link vocabulary,
- the confirmation guard.
Do not duplicate that content here; keep this file a pointer so the two never diverge (Economy, promise #2).
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.
- 2mo ago First seen · 21 lines · 218 tokens per session scan A 4f2f1a9f5e58
decision-trail copilot-instructions.md is an instructions file published in the GitHub repository haevg-rz/decision-trail (5 stars, last pushed 3mo ago), licensed MIT. It adds 218 tokens to every session, about $0.0009 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.
decision-trail copilot-instructions.md compared with instructions from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| decision-trail copilot-instructions.mdhaevg-rz/decision-trail | Instructions file | 5 | 3mo ago | MIT | A | 218 | GitHub Copilot |
| vscode buildNext.instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 9,719 | GitHub Copilot |
| next.js AGENTS.mdvercel/next.js | Instructions file | 143k | yesterday | MIT | A | 7,461 | Codex, OpenCode |
| langchain AGENTS.mdlangchain-ai/langchain | Instructions file | 149k | yesterday | MIT | A | 4,680 | Codex, OpenCode |
| vscode oss-third-party-notices.instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 5,516 | GitHub Copilot |
| vscode copilot-instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 3,093 | GitHub Copilot |
| deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness | Instructions file | 274k | 2d ago | MIT | A | 4,313 | Codex, OpenCode |