vibe-coding-ai-rules: Instructions file for GitHub Copilot

ide-specific/github-copilot/.github/copilot-instructions.md

vibe-coding-ai-rules copilot-instructions.md is an instructions file for GitHub Copilot from obviousworks/vibe-coding-ai-rules. It costs 424 tokens per session, scanned A, original, MIT.

A project-specific instruction file covering the project's overview, technology choices, coding principles, prohibited dependencies, and setup commands. Its template includes guidance such as TDD, meaning designing and testing code as it is built.

In plain words
What is it for?
Use it as a coding guide for projects that fill in the template's placeholders with their own language, frameworks, commands, and dependencies.
Why use it?
It helps an agent understand the project's rules before coding and avoid banned tools or unclear, hard-to-test changes.

Instructions file for GitHub Copilot

Written for GitHub Copilot: a Copilot instructions file.

This is obviousworks/vibe-coding-ai-rules's own configuration. It tells GitHub Copilot how to work on vibe-coding-ai-rules 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 vibe-coding-ai-rules configures →

Reuse

Borrowing it

Nothing to install: this file belongs to obviousworks/vibe-coding-ai-rules. 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/obviousworks/vibe-coding-ai-rules/main/ide-specific/github-copilot/.github/copilot-instructions.md
Clone the repo
git clone --depth 1 https://github.com/obviousworks/vibe-coding-ai-rules

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 vibe-coding-ai-rules copilot-instructions.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/obviousworks/vibe-coding-ai-rules/copilot-instructions/github.svg)](https://agentmods.dev/instructions/obviousworks/vibe-coding-ai-rules/copilot-instructions)
Your own site
<a href="https://agentmods.dev/instructions/obviousworks/vibe-coding-ai-rules/copilot-instructions"><img src="https://agentmods.dev/badge/instructions/obviousworks/vibe-coding-ai-rules/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.

agentmods 80×15 button for vibe-coding-ai-rules copilot-instructions.md

Your own site · 80×15
<a href="https://agentmods.dev/instructions/obviousworks/vibe-coding-ai-rules/copilot-instructions"><img src="https://agentmods.dev/badge/instructions/obviousworks/vibe-coding-ai-rules/copilot-instructions.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 424 This file is loaded in full into every session.
When invoked 424 The same file — it is already loaded in full.
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 $0.00424 $0.00424
Opus 5.5 $0.00170 $0.00170
Sonnet 5.5 $0.00085 $0.00085
Haiku 4.5 $0.00042 $0.00042

Measured 2mo ago against content hash 905be5f7dcfd, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

vibe-coding-ai-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 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.

ide-specific/github-copilot/.github/copilot-instructions.md · 51 lines

What it actually says

{{PROJECT_NAME}}

Project Overview

{{PROJECT_DESCRIPTION}}

Architecture: {{ARCHITECTURE_TYPE}} Language: {{PRIMARY_LANGUAGE}} ({{LANGUAGE_VERSION}}) Framework: {{PRIMARY_FRAMEWORK}}

Tech Stack

  • Frontend: {{FRONTEND_FRAMEWORKS}}
  • Backend: {{BACKEND_FRAMEWORKS}}
  • Database: {{DATABASE}}
  • Testing: {{TESTING_FRAMEWORK}}
  • Package Manager: {{PACKAGE_MANAGER}}

DO NOT Use

  • {{BANNED_DEPENDENCY_1}} (use {{ALTERNATIVE_1}} instead)
  • {{BANNED_DEPENDENCY_2}} (use {{ALTERNATIVE_2}} instead)

Core Principles

  1. Clarify Before Coding: Understand requirements before writing code. Ask questions when intent is unclear. No code without clear goals.
  2. Simplicity First: Choose the simplest viable solution. Complex patterns need explicit justification. Readable code over clever code.
  3. Security By Default: Validate all inputs. No secrets in code. Defense in depth. Least privilege principle.
  4. Test-Driven Thinking: Design all code to be testable from inception. Write tests alongside code. Verify before committing.

Setup Commands

{{INSTALL_COMMAND}}
{{DEV_COMMAND}}
{{TEST_COMMAND}}
{{BUILD_COMMAND}}

Workflow

  • Atomic changes: small, self-contained modifications
  • Conventional commits: type(scope): description
  • Only modify files directly related to the current task
  • Never add new dependencies without explicit approval or compelling justification
  • Use file-scoped commands. Reference docs instead of pasting. Optimize context window usage.
  • Follow established conventions for the relevant language and tech stack
  • Comment only complex logic or critical functions. Avoid documenting the obvious.
  • After generating code, argue against your own solution. Check for redundancy, unnecessary complexity, or simpler alternatives.

When Uncertain

  • Ask clarifying questions before implementing
  • Reference existing patterns in the codebase
  • Start small and iterate
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. 2mo ago First seen · 51 lines · 424 tokens per session scan A 905be5f7dcfd

Subscribe to this mod's changes

vibe-coding-ai-rules copilot-instructions.md is an instructions file published in the GitHub repository obviousworks/vibe-coding-ai-rules (96 stars, last pushed 4mo ago), licensed MIT. It adds 424 tokens to every session, about $0.0017 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 2026-08-30.

Related

vibe-coding-ai-rules copilot-instructions.md compared with instructions from other repositories

vibe-coding-ai-rules copilot-instructions.md next to 6 instructions from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
vibe-coding-ai-rules copilot-instructions.mdobviousworks/vibe-coding-ai-rulesInstructions file964mo agoMITA424GitHub Copilot
vscode buildNext.instructions.mdmicrosoft/vscodeInstructions file195kyesterdayMITA9,719GitHub Copilot
next.js AGENTS.mdvercel/next.jsInstructions file143ktodayMITA7,461Codex, OpenCode
langchain AGENTS.mdlangchain-ai/langchainInstructions file149kyesterdayMITA4,680Codex, OpenCode
vscode oss-third-party-notices.instructions.mdmicrosoft/vscodeInstructions file195kyesterdayMITA5,516GitHub Copilot
vscode copilot-instructions.mdmicrosoft/vscodeInstructions file195kyesterdayMITA3,093GitHub Copilot
deepseek-harness AGENTS.mddeepseek-ai/deepseek-harnessInstructions file274k2d agoMITA4,313Codex, OpenCode