copilot-instructions-template: Instructions file for GitHub Copilot

.github/instructions/phase-05-implementation.instructions.md

copilot-instructions-template phase-05-implementation.instructions.md is an instructions file for GitHub Copilot from zarfld/copilot-instructions-template. It costs 8,298 tokens per session, scanned A, original, no licence file.

Implementation guidance based on an international software-development standard. It recommends Test-Driven Development (writing a test before the code), pair programming, continuous integration, and refactoring.

In plain words
What is it for?
Planning and carrying out an implementation phase, including writing tests first, working in pairs, integrating changes regularly, and restructuring code without changing its intended behaviour.
Why use it?
It gives developers a defined process for building and improving software while checking changes with tests.

Instructions file for GitHub Copilot

Written for GitHub Copilot: a Copilot instructions file.

This is zarfld/copilot-instructions-template's own configuration. It tells GitHub Copilot how to work on copilot-instructions-template 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 copilot-instructions-template configures →

Reuse

Borrowing it

Nothing to install: this file belongs to zarfld/copilot-instructions-template. 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/zarfld/copilot-instructions-template/master/.github/instructions/phase-05-implementation.instructions.md
Clone the repo
git clone --depth 1 https://github.com/zarfld/copilot-instructions-template

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 copilot-instructions-template phase-05-implementation.instructions.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/zarfld/copilot-instructions-template/phase-05-implementation/github.svg)](https://agentmods.dev/instructions/zarfld/copilot-instructions-template/phase-05-implementation)
Your own site
<a href="https://agentmods.dev/instructions/zarfld/copilot-instructions-template/phase-05-implementation"><img src="https://agentmods.dev/badge/instructions/zarfld/copilot-instructions-template/phase-05-implementation/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 copilot-instructions-template phase-05-implementation.instructions.md

Your own site · 80×15
<a href="https://agentmods.dev/instructions/zarfld/copilot-instructions-template/phase-05-implementation"><img src="https://agentmods.dev/badge/instructions/zarfld/copilot-instructions-template/phase-05-implementation.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 8,298 This file is loaded in full into every session.
When invoked 8,298 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 unknown 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 $0.08298 $0.08298
Opus 5.5 $0.03319 $0.03319
Sonnet 5.5 $0.01660 $0.01660
Haiku 4.5 $0.00830 $0.00830

Measured 1mo ago against content hash 5612ef515af6, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

copilot-instructions-template phase-05-implementation.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 1mo 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.

.github/instructions/phase-05-implementation.instructions.md · 1,112 lines

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.

Read it on GitHub

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. 1mo ago First seen · 1,112 lines · 8,298 tokens per session scan A 5612ef515af6

Subscribe to this mod's changes

copilot-instructions-template phase-05-implementation.instructions.md is an instructions file published in the GitHub repository zarfld/copilot-instructions-template (1 stars, last pushed 15d ago), with no licence file. It adds 8,298 tokens to every session, about $0.0332 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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