AgentSkillsCN

invest-stories

在编写、审查或验证用户故事时使用。ARCHITECT-AGENT 与 PRODUCT-OWNER 均会频繁调用此技能。

SKILL.md
--- frontmatter
name: invest-stories
description: When writing, reviewing, or validating user stories. Used by ARCHITECT-AGENT and PRODUCT-OWNER.
version: 1.0.0
tokens: ~400
confidence: high
sources:
  - https://www.agilealliance.org/glossary/invest/
  - https://xp123.com/articles/invest-in-good-stories-and-smart-tasks/
last_validated: 2025-01-10
next_review: 2025-01-24
tags: [agile, stories, planning, product]

When to Use

When writing, reviewing, or validating user stories. Used by ARCHITECT-AGENT and PRODUCT-OWNER.

Patterns

INVEST Criteria

I - Independent

code
✅ Can be developed without waiting for other stories
✅ No circular dependencies
❌ "This needs Story X which needs this"

N - Negotiable

code
✅ HOW is flexible (implementation not prescribed)
✅ WHAT is clear (outcome defined)
❌ "Must use React Query with exact caching config"

V - Valuable

code
✅ Delivers value to USER or BUSINESS
✅ Value stated explicitly
❌ "Refactor database layer" (no user value)
✅ "User sees data faster because we optimized queries"

E - Estimable

code
✅ Team can estimate complexity (S/M/L)
✅ No major unknowns blocking estimation
❌ "Integrate with external API" (which API? what ops?)

S - Small

code
✅ Completable in 1-3 sessions
✅ Can be code reviewed in one sitting
❌ 10+ acceptance criteria, multiple components

T - Testable

code
✅ ALL acceptance criteria verifiable
✅ Given/When/Then format used
❌ "System should handle errors gracefully"
✅ "Given invalid input, Then error message X displays"

Anti-Patterns

  • •Technical stories without user value
  • •Epic disguised as story (too big)
  • •Vague AC ("properly handles", "works correctly")
  • •Implementation prescribed in story
  • •Circular dependencies between stories

Verification Checklist

  • • Story traces to PRD requirement
  • • Each INVEST criterion passes
  • • AC uses Given/When/Then
  • • No vague words in AC
  • • Dependencies are one-way only
  • • Estimated as S, M, or L