custom_github_copilot_agent_builder: Instructions file for GitHub Copilot

.github/instructions/task-implementation.instructions.md

custom_github_copilot_agent_builder task-implementation.instructions.md is an instructions file for GitHub Copilot from dhar174/custom_github_copilot_agent_builder. It costs 1,654 tokens per session, scanned A, original, MIT.

Instructions for carrying out a software task plan step by step while recording implementation changes in corresponding change files.

In plain words
What is it for?
Reading task plans, inspecting referenced files, implementing checklist items in order, and tracking the changes made.
Why use it?
It keeps planned work, project context, progress, and recorded changes aligned during implementation.

Instructions file for GitHub Copilot

Written for GitHub Copilot: a Copilot instructions file.

This is dhar174/custom_github_copilot_agent_builder's own configuration. It tells GitHub Copilot how to work on custom_github_copilot_agent_builder 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 custom_github_copilot_agent_builder configures →

Reuse

Borrowing it

Nothing to install: this file belongs to dhar174/custom_github_copilot_agent_builder. 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/dhar174/custom_github_copilot_agent_builder/main/.github/instructions/task-implementation.instructions.md
Clone the repo
git clone --depth 1 https://github.com/dhar174/custom_github_copilot_agent_builder

Made for: GitHub Copilot.

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Per session 1,654 This file is loaded in full into every session.
When invoked 1,654 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 $0.01654 $0.01654
Opus 5 $0.00827 $0.00827
Sonnet 5 $0.00331 $0.00331
Haiku 4.5 $0.00165 $0.00165

Measured 3d ago against content hash fd9a224daaf1, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

custom_github_copilot_agent_builder task-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 3d 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/task-implementation.instructions.md · 191 lines

How it starts

The opening of the file, as written. The whole thing — 191 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Task Plan Implementation Instructions

You will implement your specific task plan located in .copilot-tracking/plans/** and .copilot-tracking/details/**. Your goal is to progressively and completely implement each step in the plan files to create high-quality, working software that meets all specified requirements.

Implementation progress MUST be tracked in a corresponding changes files located in .copilot-tracking/changes/**.

Core Implementation Process

1. Plan Analysis and Preparation

MUST complete before starting implementation:

  • MANDATORY: Read and fully understand the complete plan file including scope, objectives, all phases, and every checklist item
  • MANDATORY: Read and fully understand the corresponding changes file completely - if any parts are missing from context, read the entire file back in using read_file
  • MANDATORY: Identify all referenced files mentioned in the plan and examine them for context
  • MANDATORY: Understand current project structure and conventions

2. Systematic Implementation Process

Implement each task in the plan systematically:

  1. Process tasks in order - Follow the plan sequence exactly, one task at a time

  2. MANDATORY before implementing any task:

    • ALWAYS ensure implementation is associated with a specific task from the plan
    • ALWAYS read the entire details section for that task from the associated details markdown file in .copilot-tracking/details/**
    • FULLY understand all implementation details before proceeding
    • Gather any additional required context as needed
  3. Implement the task completely with working code:

    • Follow existing code patterns and conventions from the workspace
    • Create working functionality that meets all task requirements specified in the details
    • Include proper error handling, documentation, and follow best practices
  4. Mark task complete and update changes tracking:

    • Update plan file: change [ ] to [x] for completed task
    • MANDATORY after completing EVERY task: Update the changes file by appending to the appropriate Added, Modified, or Removed sections with relative file paths and one-sentence summary of what was implemented
    • MANDATORY: If any changes diverge from the task plan and details, specifically call out within the relevant section that the change was made outside of the plan and include the specific reason
    • If ALL tasks in a phase are complete [x], mark the phase header as complete [x]

Read the full file on GitHub · 191 lines

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. 3d ago First seen · 191 lines · 1,654 tokens per session scan A fd9a224daaf1

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custom_github_copilot_agent_builder task-implementation.instructions.md is an instructions file published in the GitHub repository dhar174/custom_github_copilot_agent_builder (7 stars, last pushed 7mo ago), licensed MIT. It adds 1,654 tokens to every session, about $0.0083 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 2026-09-03.

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