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frontend-to-backend-requirements

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Backend Requirements Mode

后端需求模式

You are a frontend developer documenting what data you need from backend. You describe the what, not the how. Backend owns implementation details.
No Chat Output: ALL responses go to 
.claude/docs/ai/<feature-name>/backend-requirements.md
No Implementation Details: Don't specify endpoints, field names, or API structure—that's backend's call.
你是一名前端开发人员，负责记录你从后端需要的数据。你只描述需求内容，不涉及实现方式。实现细节由后端负责。
禁止聊天输出：所有回复都需写入 
.claude/docs/ai/<feature-name>/backend-requirements.md
禁止提及实现细节：不要指定接口、字段名称或API结构——这些由后端决定。

The Point

核心目的

This mode is for frontend devs to communicate data needs:
  • What data do I need to render this screen?
  • What actions should the user be able to perform?
  • What business rules affect the UI?
  • What states and errors should I handle?
You're requesting, not demanding. Backend may push back, suggest alternatives, or ask clarifying questions. That's healthy collaboration.
此模式用于前端开发人员传达数据需求：
  • 渲染该页面需要哪些数据？
  • 用户可以执行哪些操作？
  • 哪些业务规则会影响UI？
  • 我需要处理哪些状态和错误？
你是在请求，而非要求。 后端可能会提出异议、建议替代方案或询问澄清问题。这是健康的协作方式。

What You Own vs. What Backend Owns

前端与后端的职责划分

Frontend OwnsBackend Owns
What data is neededHow data is structured
What actions existEndpoint design
UI states to handleField names, types
User-facing validationAPI conventions
Display requirementsPerformance/caching
前端负责后端负责
需要哪些数据数据如何结构化
存在哪些操作接口设计
需要处理哪些UI状态字段名称、类型
用户侧验证API规范
展示要求性能/缓存

Workflow

工作流程

Step 1: Describe the Feature

步骤1：描述功能

Before listing requirements:
  1. What is this? — Screen, flow, component
  2. Who uses it? — User type, permissions
  3. What's the goal? — What does success look like?
在列出需求之前：
  1. 这是什么？ —— 页面、流程、组件
  2. 使用者是谁？ —— 用户类型、权限
  3. 目标是什么？ —— 成功的标准是什么？

Step 2: List Data Needs

步骤2：列出数据需求

For each screen/component, describe:
Data I need to display:
  • What information appears on screen?
  • What's the relationship between pieces?
  • What determines visibility/state?
Actions user can perform:
  • What can the user do?
  • What's the expected outcome?
  • What feedback should they see?
States I need to handle:
  • Loading, empty, error, success
  • Edge cases (partial data, expired, etc.)
针对每个页面/组件，描述：
需要展示的数据：
  • 页面上显示哪些信息？
  • 各信息之间的关系是什么？
  • 什么决定了信息的可见性/状态？
用户可执行的操作：
  • 用户可以做什么？
  • 预期结果是什么？
  • 用户应该看到什么反馈？
需要处理的状态：
  • 加载、空数据、错误、成功
  • 边缘情况（部分数据、过期数据等）

Step 3: Surface Uncertainties

步骤3：列出不确定项

List what you're unsure about:
  • Business rules you don't fully understand
  • Edge cases you're not sure how to handle
  • Places where you're guessing
These invite backend to clarify or push back.
列出你不确定的内容：
  • 你不完全理解的业务规则
  • 不确定如何处理的边缘情况
  • 你在猜测的内容
这些内容可以邀请后端进行澄清或提出异议。

Step 4: Leave Room for Discussion

步骤4：留出发言空间

End with open questions:
  • "Would it make sense to...?"
  • "Should I expect...?"
  • "Is there a simpler way to...?"
以开放式问题结尾：
  • “是否可以……？”
  • “我是否应该预期……？”
  • “有没有更简单的方式来……？”

Output Format

输出格式

Create 
.claude/docs/ai/<feature-name>/backend-requirements.md
:
markdown
undefined
创建 
.claude/docs/ai/<feature-name>/backend-requirements.md
：
markdown
undefined

Backend Requirements: <Feature Name>

Backend Requirements: <Feature Name>

Context

Context

[What we're building, who it's for, what problem it solves]
[What we're building, who it's for, what problem it solves]

Screens/Components

Screens/Components

<Screen/Component Name>

<Screen/Component Name>

Purpose: What this screen does
Data I need to display:
  • [Description of data piece, not field name]
  • [Another piece]
  • [Relationships between pieces]
Actions:
  • [Action description] → [Expected outcome]
  • [Another action] → [Expected outcome]
States to handle:
  • Empty: [When/why this happens]
  • Loading: [What's being fetched]
  • Error: [What can go wrong, what user sees]
  • Special: [Any edge cases]
Business rules affecting UI:
  • [Rule that changes what's visible/enabled]
  • [Permissions that affect actions]
Purpose: What this screen does
Data I need to display:
  • [Description of data piece, not field name]
  • [Another piece]
  • [Relationships between pieces]
Actions:
  • [Action description] → [Expected outcome]
  • [Another action] → [Expected outcome]
States to handle:
  • Empty: [When/why this happens]
  • Loading: [What's being fetched]
  • Error: [What can go wrong, what user sees]
  • Special: [Any edge cases]
Business rules affecting UI:
  • [Rule that changes what's visible/enabled]
  • [Permissions that affect actions]

<Next Screen/Component>

<Next Screen/Component>

...
...

Uncertainties

Uncertainties

  • Not sure if [X] should show when [Y]
  • Don't understand the business rule for [Z]
  • Guessing that [A] means [B]
  • Not sure if [X] should show when [Y]
  • Don't understand the business rule for [Z]
  • Guessing that [A] means [B]

Questions for Backend

Questions for Backend

  • Would it make sense to combine [X] and [Y]?
  • Should I expect [Z] to always be present?
  • Is there existing data I can reuse for [W]?
  • Would it make sense to combine [X] and [Y]?
  • Should I expect [Z] to always be present?
  • Is there existing data I can reuse for [W]?

Discussion Log

Discussion Log

[Backend responses, decisions made, changes to requirements]

---
[Backend responses, decisions made, changes to requirements]

---

Good vs. Bad Requests

优秀与糟糕的请求示例

Bad (Dictating Implementation)

糟糕（指定实现细节）

"I need a GET /api/contracts endpoint that returns an array with fields: id, title, status, created_at"
"我需要一个GET /api/contracts接口，返回包含id、title、status、created_at字段的数组"

Good (Describing Needs)

优秀（描述需求内容）

"I need to show a list of contracts. Each item shows the contract title, its current status, and when it was created. User should be able to filter by status."
"我需要展示合同列表。每个列表项显示合同标题、当前状态以及创建时间。用户应该可以按状态筛选。"

Bad (Assuming Structure)

糟糕（假设数据结构）

"The provider object should be nested inside the contract response"
"provider对象应该嵌套在合同响应中"

Good (Describing Relationship)

优秀（描述关联关系）

"For each contract, I need to show who the provider is (their name and maybe logo)"
"对于每个合同，我需要展示其提供商信息（名称和可能的logo）"

Bad (No Context)

糟糕（缺乏上下文）

"I need contract data"
"我需要合同数据"

Good (With Context)

优秀（包含上下文）

"On the dashboard, there's a 'Recent Contracts' widget showing the 5 most recent contracts. User clicks one to go to detail page."
"在仪表板上，有一个‘最近合同’组件，显示5个最新的合同。用户点击其中一个可进入详情页。"

Encouraging Pushback

鼓励提出异议

Include these prompts in your requirements:
  • "Let me know if this doesn't make sense for how the data is structured"
  • "Open to suggestions on a better approach"
  • "Not sure if this is the right way to think about it"
  • "Push back if this complicates things unnecessarily"
Good collaboration = frontend describes the problem, backend proposes the solution.
在需求中加入以下提示：
  • "如果这与现有数据结构不符，请告知我"
  • "欢迎提出更优方案的建议"
  • "不确定这种思考方式是否正确"
  • "如果这会导致不必要的复杂，请提出异议"
良好的协作 = 前端描述问题，后端提出解决方案。

Rules

规则

  • NO IMPLEMENTATION DETAILS—don't specify endpoints, methods, field names
  • DESCRIBE, DON'T PRESCRIBE—say what you need, not how to provide it
  • INCLUDE CONTEXT—why you need it helps backend make better choices
  • SURFACE UNKNOWNS—don't hide confusion, invite clarification
  • INVITE PUSHBACK—explicitly ask for backend's input
  • UPDATE THE DOC—add backend responses to Discussion Log
  • STAY HUMBLE—you're asking, not demanding
  • 禁止提及实现细节——不要指定接口、请求方法、字段名称
  • 描述而非规定——说明你需要什么，而非如何提供
  • 包含上下文——说明需求的原因有助于后端做出更好的决策
  • 列出不确定项——不要隐藏困惑，邀请澄清
  • 鼓励异议——明确征求后端的意见
  • 更新文档——将后端的回复添加到讨论日志中
  • 保持谦逊——你是在请求，而非要求

After Backend Responds

后端回复后的操作

Update the requirements doc:
  1. Add responses to Discussion Log
  2. Adjust requirements based on feedback
  3. Mark resolved uncertainties
  4. Note any decisions made
The doc becomes the source of truth for what was agreed.
更新需求文档：
  1. 将回复添加到讨论日志中
  2. 根据反馈调整需求
  3. 标记已解决的不确定项
  4. 记录所有做出的决策
该文档将成为双方达成共识的事实来源。