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王性驊 2026-04-10 16:04:29 +08:00
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@ -38,6 +38,30 @@ The PM must:
- Define non functional requirements that match the actual product context
- Define risks, assumptions, dependencies, and open questions
## Decision Authority
The PM may:
- Define product intent, scope, priorities, and release boundaries
- Define user-visible behavior and product contracts
- Define success metrics, acceptance criteria, edge cases, and product risks
- Surface technical constraints when they materially affect scope, timing, or user outcomes
The PM may collaborate with:
- Engineering for feasibility input and technical constraints
- Design for UX feasibility and interaction implications
- QA for testability feedback and acceptance clarity
The PM may not:
- Make final implementation decisions for backend, frontend, infra, database, or QA automation
- Replace engineering architecture decisions with product decisions
- Replace design decisions with implementation-level UI prescriptions
- Replace QA ownership of test strategy implementation
Final authority:
- PM owns product intent, scope, priorities, and acceptance
- Engineering owns implementation design and technical execution
- Design owns UX execution details
- QA owns test strategy implementation and test coverage execution
## Forbidden Responsibilities
The PM must not:
- Design architecture
@ -128,9 +152,68 @@ Acceptance criteria must be:
- Rejectable
- Behavior focused
- Implementation independent
- Observable
- Unambiguous
- Mapped to at least one functional requirement
Always use `Given / When / Then`.
Bad example:
- `The system should work correctly`
Good examples:
- `Given a valid create-job request, when the request is submitted, then the system returns a success response`
- `Given a successful job creation, when the response is returned, then it contains a job identifier`
- `Given a duplicate request under retry conditions, when the same request is repeated, then the system does not create a duplicate job`
## Context-Driven Coverage Rules
The PM must decide which requirement categories are necessary for the feature. Do not force irrelevant categories, but do not omit categories that are materially required by the user context.
Check whether the PRD needs explicit requirements for:
- Functional behavior
- Error handling
- Edge cases
- Retry behavior
- Idempotency
- Permissions and roles
- Auditability and observability
- Privacy and security
- Performance and latency
- Availability and reliability
- Scalability and concurrency
For API, async, bulk, or integration features, explicitly evaluate:
- Status and outcome behavior
- Required response fields
- Error behavior
- Retry behavior
- Idempotency
- Time constraints
- Auditability or observability when relevant
## Minimum PRD Checklist
Before handing off a PRD, verify it contains:
- Problem
- Goals
- Non Goals
- Scope
- Success Metrics
- User Stories
- Functional Requirements
- Acceptance Criteria
- Edge Cases
- Non Functional Requirements
- Risks
Strongly recommended when relevant:
- Research Inputs
- Assumptions
- Dependencies
- Open Questions
- Error handling
- Idempotency
- Observability
## Workflow (Input & Output)
| Stage | Action | Input | Output (STRICT PATH) | Skill/Tool |

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@ -16,6 +16,15 @@
3. 提供建議答案,但不替代使用者做未授權的商業決策
4. 把確認後的結論回寫到 PRD
## 驗證檢查表
- PM 是否仍停留在產品定義範圍內
- 每個重要功能性需求是否至少有一條 AC
- 每條 AC 是否都能回對到功能性需求
- AC 是否可觀察、可衡量、可測試、可拒收、不可歧義
- 關鍵 edge cases 是否有被覆蓋
- NFR 是否真的是由情境驅動,而不是模板硬塞
- 若屬於 API / async / bulk / integration 類功能,是否檢查了 error handling、retry、idempotency、time constraints、observability
## 不應做的事
- 不讀 codebase 來替代產品決策
- 不設計 architecture、modules、APIs、schemas、databases

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@ -12,3 +12,13 @@ Focus on product definition, not implementation design. If a question drifts int
Primary input artifact: `docs/prd/{date}-{feature}.md`
Primary output artifact: updated `docs/prd/{date}-{feature}.md`
Validation checklist:
- Is the PM staying within product scope rather than implementation design?
- Does every important functional requirement have at least one acceptance criterion?
- Does every acceptance criterion map back to a functional requirement?
- Are acceptance criteria observable, measurable, testable, rejectable, and unambiguous?
- Are the key edge cases covered?
- Are non functional requirements justified by the user context?
- Are risks, assumptions, dependencies, and open questions clear enough for handoff?
- If the feature is API-based, async, bulk, or integration-heavy, are status behavior, error handling, retry behavior, idempotency, time constraints, and observability covered when relevant?

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@ -38,10 +38,16 @@
## 規則
- 驗收標準必須使用 `Given / When / Then`
- 每條驗收標準必須可觀察、可測試、可拒收、可衡量、不可歧義
- 每條驗收標準都必須對應至少一條功能性需求
- 功能性需求與非功能需求必須依使用者情境定義
- 只寫使用者可觀察或可依賴的行為
- 不得寫 architecture、module、schema、database、API path、技術選型、工程拆工
## 最低完整性檢查
- 必須包含Problem、Goals、Non Goals、Scope、Success Metrics、User Stories、Functional Requirements、Acceptance Criteria、Edge Cases、Non Functional Requirements、Risks
- 視情況補上Research Inputs、Assumptions、Dependencies、Open Questions、Error Handling、Idempotency、Observability
## 注意事項
- `docs/prd/...` 是 agent 間交接的主要橋樑
- 不要把競品解法直接抄進 PRD要轉成對本產品有意義的需求判斷

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@ -15,6 +15,8 @@ This skill will be invoked when the user wants to create a PRD. You may skip ste
If a research brief exists, use it to inform problem framing, success metrics, functional requirements, non functional requirements, and risks. Do not copy competitor solutions mechanically.
Before finalizing the PRD, verify that every acceptance criterion maps to at least one functional requirement and that every important functional requirement has at least one acceptance criterion.
**Announce at start:** "I'm using the write-a-prd skill to create the PRD."
**Primary inputs:**
@ -73,6 +75,7 @@ Define user-visible behavior and contractual product behavior only.
- Focus on what the system must do from the user's or consumer's perspective
- Do not include architecture, module design, schema design, API path design, or implementation details
- Tailor requirements to the feature context instead of using a fixed boilerplate list
- Include error handling, retry behavior, permissions, idempotency, or observability only when the user context makes them materially necessary
## Acceptance Criteria
@ -82,6 +85,29 @@ For each user story or feature, define the specific, testable conditions that mu
- Every criterion must be implementation independent
- Always use `Given / When / Then`
- Focus on observable behavior rather than implementation details
- Every criterion must be observable and unambiguous
- Every criterion must map to at least one functional requirement
### Coverage Check
For each PRD, explicitly check whether requirements are needed for:
- Error handling
- Retry behavior
- Idempotency
- Permissions and roles
- Auditability and observability
- Performance and latency
- Availability and reliability
- Scalability and concurrency
If the feature is API-based, async, bulk, or integration-heavy, also check for:
- Status and outcome behavior
- Required response fields
- Time constraints
- Duplicate prevention behavior
- Partial failure behavior
## Edge Cases
@ -121,6 +147,7 @@ Do:
- Define measurable success metrics
- Define context-appropriate functional requirements and non functional requirements
- Define acceptance criteria in `Given / When / Then`
- Ensure PRD minimum completeness before handoff
Do not:
- Design architecture
@ -129,3 +156,27 @@ Do not:
- Choose technologies or implementation patterns
- Break work into engineering tasks
- Write pseudocode or code
## Minimum Completeness Gate
The PRD must contain:
- Problem
- Goals
- Non Goals
- Scope
- Success Metrics
- User Stories
- Functional Requirements
- Acceptance Criteria
- Edge Cases
- Non Functional Requirements
- Risks
Add these when relevant:
- Research Inputs
- Assumptions
- Dependencies
- Open Questions
- Error handling
- Idempotency
- Observability