custom_github_copilot_agent_builder: Instructions file for GitHub Copilot

.github/instructions/spec-driven-workflow-v1.instructions.md

custom_github_copilot_agent_builder spec-driven-workflow-v1.instructions.md is an instructions file for GitHub Copilot from dhar174/custom_github_copilot_agent_builder. It costs 2,584 tokens per session, scanned A, original, MIT.

A development process that records requirements, technical design, and implementation tasks in separate documents. It uses acceptance criteria to describe when a requirement is met.

In plain words
What is it for?
Planning software projects, documenting architecture, tracking implementation steps, and recording validation results.
Why use it?
It reduces confusion between what software should do, how it should be built, and which work remains.

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/spec-driven-workflow-v1.instructions.md
Clone the repo
git clone --depth 1 https://github.com/dhar174/custom_github_copilot_agent_builder

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.

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README.md
[![agentmods](https://agentmods.dev/badge/instructions/dhar174/custom_github_copilot_agent_builder/spec-driven-workflow-v1.svg)](https://agentmods.dev/instructions/dhar174/custom_github_copilot_agent_builder/spec-driven-workflow-v1)
Your own site
<a href="https://agentmods.dev/instructions/dhar174/custom_github_copilot_agent_builder/spec-driven-workflow-v1"><img src="https://agentmods.dev/badge/instructions/dhar174/custom_github_copilot_agent_builder/spec-driven-workflow-v1.svg" alt="Measured on agentmods" height="20"></a>
Per session 2,584 This file is loaded in full into every session.
When invoked 2,584 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 $0.02584 $0.02584
Opus 5 $0.01292 $0.01292
Sonnet 5 $0.00517 $0.00517
Haiku 4.5 $0.00258 $0.00258

Measured 3d ago against content hash b664c3c3ffc5, 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 spec-driven-workflow-v1.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.

Origin

Copies of this mod

1 near-identical copy found in the catalogue:

.github/instructions/spec-driven-workflow-v1.instructions.md · 324 lines

How it starts

The opening of the file, as written. The whole thing — 324 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Spec Driven Workflow v1

Specification-Driven Workflow: Bridge the gap between requirements and implementation.

Maintain these artifacts at all times:

  • requirements.md: User stories and acceptance criteria in structured EARS notation.
  • design.md: Technical architecture, sequence diagrams, implementation considerations.
  • tasks.md: Detailed, trackable implementation plan.

Universal Documentation Framework

Documentation Rule: Use the detailed templates as the primary source of truth for all documentation.

Summary formats: Use only for concise artifacts such as changelogs and pull request descriptions.

Detailed Documentation Templates

Action Documentation Template (All Steps/Executions/Tests)
### [TYPE] - [ACTION] - [TIMESTAMP]
**Objective**: [Goal being accomplished]
**Context**: [Current state, requirements, and reference to prior steps]
**Decision**: [Approach chosen and rationale, referencing the Decision Record if applicable]
**Execution**: [Steps taken with parameters and commands used. For code, include file paths.]
**Output**: [Complete and unabridged results, logs, command outputs, and metrics]
**Validation**: [Success verification method and results. If failed, include a remediation plan.]
**Next**: [Automatic continuation plan to the next specific action]
Decision Record Template (All Decisions)
### Decision - [TIMESTAMP]
**Decision**: [What was decided]
**Context**: [Situation requiring decision and data driving it]
**Options**: [Alternatives evaluated with brief pros and cons]
**Rationale**: [Why the selected option is superior, with trade-offs explicitly stated]
**Impact**: [Anticipated consequences for implementation, maintainability, and performance]
**Review**: [Conditions or schedule for reassessing this decision]

Summary Formats (for Reporting)

Streamlined Action Log

For generating concise changelogs. Each log entry is derived from a full Action Document.

Read the full file on GitHub · 324 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 · 324 lines · 2,584 tokens per session scan A b664c3c3ffc5

Subscribe to this mod's changes

custom_github_copilot_agent_builder spec-driven-workflow-v1.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 2,584 tokens to every session, about $0.0129 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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