Agent Skills: Plan Builder

Write implementation plans with appropriate templates based on complexity. Use when planning features or changes. Provides minimal, standard, and full templates for different scope levels.

UncategorizedID: majesticlabs-dev/majestic-marketplace/plan-builder

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pnpm dlx add-skill https://github.com/majesticlabs-dev/majestic-marketplace/tree/HEAD/plugins/majestic-engineer/skills/plan-builder

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plugins/majestic-engineer/skills/plan-builder/SKILL.md

Skill Metadata

Name
plan-builder
Description
Write implementation plans with appropriate templates based on complexity. Use when planning features or changes. Provides minimal, standard, and full templates for different scope levels.

Plan Builder

Write implementation plans using the appropriate template based on complexity.

Template Selection

| Complexity | When to Use | Template | |------------|-------------|----------| | Minimal | Simple bugs, small improvements, clear single-file changes | references/minimal.md | | Standard | Most features, complex bugs, team collaboration | references/standard.md | | Comprehensive | Major features, architectural changes, multi-phase work | references/comprehensive.md |

Selection Criteria

Use Minimal When

  • Fix is obvious and localized
  • Single file or 2-3 related files
  • No architectural decisions needed
  • Clear acceptance criteria from description

Use Standard When (Default)

  • Multiple components affected
  • Requires research or external docs
  • Team needs context for review
  • Has dependencies or risks

Use Comprehensive When

  • New system or major feature
  • Multiple phases of work
  • Architectural decisions required
  • Cross-cutting concerns (security, performance)
  • Involves multiple teams or stakeholders

Plan Output

Write plans to: docs/plans/[YYYYMMDDHHMMSS]_<title>.md

Include in every plan:

  • Research findings with file paths (e.g., src/models/user.rb:42)
  • External documentation URLs
  • Related issues/PRs if known
  • Acceptance Criteria from user input (populated from blueprint Step 2)

Conditional Sections

UI Features

Include "Design System Reference" section when feature involves:

  • Pages, components, forms, buttons, modals
  • Visual design elements

DevOps Features

Include "Infrastructure Context" section when feature involves:

  • Terraform/OpenTofu, Ansible, cloud resources
  • Docker, CI/CD, infrastructure

Anti-Patterns

| Don't | Do | |-------|-----| | Use comprehensive for simple bugs | Match template to actual complexity | | Skip Acceptance Criteria | Always include testable criteria | | Leave placeholder text | Fill all sections or remove them | | Over-plan obvious changes | Minimal template exists for a reason |