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Update Implementation Plan

GitHubOfficialOriginally contributed by @PlagueHO as prompts/update-implementation-plan.prompt.md; moved into a skill by pull request #761Distributed by GitHub

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  • Content generator
  • Software development
  • MIT
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From the author

Update an existing implementation plan file with new or update requirements to provide new features, refactoring existing code or upgrading packages, design, architecture or infrastructure.
— the description by PlagueHO

AutoGineer summary

Written by AutoGineer from the skill’s own files, not by the author

This skill provides a structured framework for updating technical implementation plans. It enforces a deterministic, machine-parseable format designed for AI-to-AI communication, ensuring that plans for features, refactoring, or infrastructure changes are executable and unambiguous. By mandating specific templates, identifier prefixes, and phase-based task structures, it enables consistent documentation that can be processed autonomously by other agents or developers.

What it does

  • Updates existing implementation plan files with new requirements.
  • Enforces a strict, machine-readable Markdown template with YAML front matter.
  • Requires atomic, phase-based task structures with measurable completion criteria.
  • Standardizes naming conventions for plan files based on their purpose.
  • Ensures all tasks are defined with specific file paths and implementation details.
  • Validates plan structure against mandatory sections and identifier prefixes.

When to use it

  • When you need to modify an existing technical roadmap or implementation plan.
  • When preparing a plan for automated execution by other AI agents.
  • When you need to ensure high-precision, unambiguous documentation for complex refactoring or feature development.
  • When standardizing project documentation across a development team.

Advantages

  • Reduces ambiguity through deterministic language requirements.
  • Facilitates automated parsing and execution of development tasks.
  • Ensures consistency across different project specifications.
  • Provides clear tracking of dependencies, risks, and testing requirements.

Usage examples

“Update the implementation plan for the authentication module to include the new OAuth2 requirement.”
The agent modifies the existing plan file, adding a new phase for OAuth2 integration with specific tasks, dependencies, and validation criteria.
“Refactor the current infrastructure plan to include the migration to the new database cluster.”
The agent updates the plan with a new phase, defining the migration steps, affected files, and associated risks in the required machine-readable format.

Install

  1. Download the skill as a ZIP:

    https://mp-staging.autogineer.com/agent-skills/github/update-implementation-plan/download
  2. Unzip it into the cross-client skills folder of your project:

    mkdir -p .agents/skills && unzip update-implementation-plan.zip -d .agents/skills

Documentation by PlagueHO

Update Implementation Plan

Primary Directive

You are an AI agent tasked with updating the implementation plan file ${file} based on new or updated requirements. Your output must be machine-readable, deterministic, and structured for autonomous execution by other AI systems or humans.

Execution Context

This prompt is designed for AI-to-AI communication and automated processing. All instructions must be interpreted literally and executed systematically without human interpretation or clarification.

Core Requirements

  • Generate implementation plans that are fully executable by AI agents or humans

  • Use deterministic language with zero ambiguity

  • Structure all content for automated parsing and execution

  • Ensure complete self-containment with no external dependencies for understanding

Plan Structure Requirements

Plans must consist of discrete, atomic phases containing executable tasks. Each phase must be independently processable by AI agents or humans without cross-phase dependencies unless explicitly declared.

Phase Architecture

  • Each phase must have measurable completion criteria

  • Tasks within phases must be executable in parallel unless dependencies are specified

  • All task descriptions must include specific file paths, function names, and exact implementation details

  • No task should require human interpretation or decision-making

AI-Optimized Implementation Standards

  • Use explicit, unambiguous language with zero interpretation required

  • Structure all content as machine-parseable formats (tables, lists, structured data)

  • Include specific file paths, line numbers, and exact code references where applicable

  • Define all variables, constants, and configuration values explicitly

  • Provide complete context within each task description

  • Use standardized prefixes for all identifiers (REQ-, TASK-, etc.)

  • Include validation criteria that can be automatically verified

Output File Specifications

  • Save implementation plan files in /plan/ directory

  • Use naming convention: [purpose]-[component]-[version].md

  • Purpose prefixes: upgrade|refactor|feature|data|infrastructure|process|architecture|design

  • Example: upgrade-system-command-4.md, feature-auth-module-1.md

  • File must be valid Markdown with proper front matter structure

Mandatory Template Structure

All implementation plans must strictly adhere to the following template. Each section is required and must be populated with specific, actionable content. AI agents must validate template compliance before execution.

Template Validation Rules

  • All front matter fields must be present and properly formatted

  • All section headers must match exactly (case-sensitive)

  • All identifier prefixes must follow the specified format

  • Tables must include all required columns

  • No placeholder text may remain in the final output

Status

The status of the implementation plan must be clearly defined in the front matter and must reflect the current state of the plan. The status can be one of the following (status_color in brackets): Completed (bright green badge), In progress (yellow badge), Planned (blue badge), Deprecated (red badge), or On Hold (orange badge). It should also be displayed as a badge in the introduction section.

---
goal: [Concise Title Describing the Package Implementation Plan's Goal]
version: [Optional: e.g., 1.0, Date]
date_created: [YYYY-MM-DD]
last_updated: [Optional: YYYY-MM-DD]
owner: [Optional: Team/Individual responsible for this spec]
status: 'Completed'|'In progress'|'Planned'|'Deprecated'|'On Hold'
tags: [Optional: List of relevant tags or categories, e.g., `feature`, `upgrade`, `chore`, `architecture`, `migration`, `bug` etc]
---

# Introduction

![Status: <status>](https://img.shields.io/badge/status-<status>-<status_color>)

[A short concise introduction to the plan and the goal it is intended to achieve.]

## 1. Requirements & Constraints

[Explicitly list all requirements & constraints that affect the plan and constrain how it is implemented. Use bullet points or tables for clarity.]

- **REQ-001**: Requirement 1
- **SEC-001**: Security Requirement 1
- **[3 LETTERS]-001**: Other Requirement 1
- **CON-001**: Constraint 1
- **GUD-001**: Guideline 1
- **PAT-001**: Pattern to follow 1

## 2. Implementation Steps

### Implementation Phase 1

- GOAL-001: [Describe the goal of this phase, e.g., "Implement feature X", "Refactor module Y", etc.]

| Task | Description | Completed | Date |
|------|-------------|-----------|------|
| TASK-001 | Description of task 1 | ✅ | 2025-04-25 |
| TASK-002 | Description of task 2 | |  |
| TASK-003 | Description of task 3 | |  |

### Implementation Phase 2

- GOAL-002: [Describe the goal of this phase, e.g., "Implement feature X", "Refactor module Y", etc.]

| Task | Description | Completed | Date |
|------|-------------|-----------|------|
| TASK-004 | Description of task 4 | |  |
| TASK-005 | Description of task 5 | |  |
| TASK-006 | Description of task 6 | |  |

## 3. Alternatives

[A bullet point list of any alternative approaches that were considered and why they were not chosen. This helps to provide context and rationale for the chosen approach.]

- **ALT-001**: Alternative approach 1
- **ALT-002**: Alternative approach 2

## 4. Dependencies

[List any dependencies that need to be addressed, such as libraries, frameworks, or other components that the plan relies on.]

- **DEP-001**: Dependency 1
- **DEP-002**: Dependency 2

## 5. Files

[List the files that will be affected by the feature or refactoring task.]

- **FILE-001**: Description of file 1
- **FILE-002**: Description of file 2

## 6. Testing

[List the tests that need to be implemented to verify the feature or refactoring task.]

- **TEST-001**: Description of test 1
- **TEST-002**: Description of test 2

## 7. Risks & Assumptions

[List any risks or assumptions related to the implementation of the plan.]

- **RISK-001**: Risk 1
- **ASSUMPTION-001**: Assumption 1

## 8. Related Specifications / Further Reading

[Link to related spec 1]
[Link to relevant external documentation]

Files

ATTRIBUTION.md

Attribution

This folder is an unmodified copy of the Agent Skill "update-implementation-plan", distributed by AutoGineer (https://autogineer.com/agent-skills).

The skill's own files are unmodified copies. AutoGineer is not affiliated with or endorsed by the author or the publisher.

Files added by AutoGineer

  • ATTRIBUTION.md: this file, written by AutoGineer

  • LICENSE: copied from LICENSE

Requirements and compatibility

Written for: GitHub Copilot

Works with: Claude Code, Claude apps, OpenAI Codex, GitHub Copilot, Cursor, Gemini CLI, Kiro, OpenCode, Goose, Amp, Roo Code, JetBrains Junie, Factory Droid, Devin (ex-Windsurf), Mistral Vibe, OpenHands, Letta

“Works with” means the tool reads the open Agent Skills format; a skill written for one tool may use features others lack.

Security

No issues found by our static scan· No issues found

A static scan is not a guarantee. Skills are third-party content: review a skill before you let an agent use it.

Attribution and licence

Originally contributed by
GitHub avatar of PlagueHO@PlagueHOas prompts/update-implementation-plan.prompt.mdmoved into a skill by pull request #761
Publisher
GitHub (Official)
Distributed by
GitHub
Source
github/awesome-copilot · skills/update-implementation-plan · commit 797337f
Licence
MIT License (redistribution allowed)
  • LICENSE (added by AutoGineer from LICENSE)
  • ATTRIBUTION.md (written by AutoGineer)
Synced
Contributors
PlagueHO, CypherHK, derekclair

AutoGineer is not affiliated with or endorsed by PlagueHO or GitHub.

Download ZIP

The ZIP holds the skill’s files, its licence files and an ATTRIBUTION.md. Download update-implementation-plan.zip