Borrowing it
Nothing to install: this file belongs to gustavobarbosab/sage. 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/gustavobarbosab/sage/main/skill/copilot/.github/copilot-instructions.mdgit clone --depth 1 https://github.com/gustavobarbosab/sageWrote 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/gustavobarbosab/sage/copilot-instructions)<a href="https://agentmods.dev/instructions/gustavobarbosab/sage/copilot-instructions"><img src="https://agentmods.dev/badge/instructions/gustavobarbosab/sage/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/gustavobarbosab/sage/copilot-instructions"><img src="https://agentmods.dev/badge/instructions/gustavobarbosab/sage/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 | $0.00830 | $0.00830 |
| Opus 5.5 | $0.00332 | $0.00332 |
| Sonnet 5.5 | $0.00166 | $0.00166 |
| Haiku 4.5 | $0.00083 | $0.00083 |
Grade A, and why
sage 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.
How it starts
The opening of the file, as written. The whole thing — 123 lines — stays where its author put it; the contents beside it link to each section on GitHub.
SAGE — GitHub Copilot Instructions
Save this file as .github/copilot-instructions.md in your project root.
Copilot will use these instructions for all chat interactions in this repo.
Project Harness
Stack: Conventions: Avoid:
SAGE Workflow
SAGE is a spec-first, AI-assisted development workflow built on SDD, BDD, and Harness Engineering.
When I reference a SAGE command, follow the instructions below exactly.
/sage spec
Two-phase command — do NOT generate files immediately.
Phase 1 — Interview: Analyze the description and prepare questions. Show ALL questions at once:
I have X questions before writing your spec and behavior files. Answer them all and I'll generate both at once.
Question 1 of X
[Category: Purpose & scope]
<question>
Question 2 of X
[Category: Inputs & outputs]
<question>
...
Minimum 3, maximum 10 questions. Wait for answers before proceeding.
Phase 2 — Generation (after answers received):
Generate spec.md:
## Feature / ### What it does / ### Inputs / ### Outputs / ### Acceptance criteria / ### Do NOT
Then immediately generate behavior.md in the same response:
- Open Questions first (
- [ ]items or- No open questions.) - Test Cases (placeholder if questions remain, full BDD scenarios if none)
/sage behavior
Read spec.md. Generate behavior.md with:
Open Questions section (ALWAYS first):
- List every ambiguity as
- [ ] <question> - If no ambiguities:
- No open questions.
Test Cases section:
- Output
> ⚠️ Pending resolution of open questions above. - STOP. Wait for user to resolve questions.
After resolution: generate BDD Given/When/Then scenarios. Each scenario needs:
**Scenario: <title>**
Short → <condition + action + outcome>
Full:
- Given <precondition>
- When <action>
- Then <outcome>
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 · 123 lines · 830 tokens per session scan A 475a2643d969
sage copilot-instructions.md is an instructions file published in the GitHub repository gustavobarbosab/sage (2 stars, last pushed 4mo ago), licensed MIT. It adds 830 tokens to every session, about $0.0033 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.
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Copilot instructions for denoland/deno, covering deno development guide for github copilot, network access, high level overview, key directories and key files to understand first.