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nexus/wiki/concepts/Pre-Build-Validation.md
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---
title: "Pre-Build Validation"
type: concept
tags: []
last_updated: 2026-04-22
---
## Overview
在代码编写之前进行市场/竞争验证的工作流模式。AI Agent 接收构建指令后,首先调用竞争分析工具(如 [[idea-reality-mcp]] 的 `idea_check()`)评估赛道的真实拥挤度,只有通过门控条件才允许进入实际代码编写阶段。
## Mechanism
1. 用户/Agent 提出构建需求(如"build me an AI code review tool"
2. Agent 调用 `idea_check()` 扫描多平台真实数据
3. 返回 `reality_signal` 分数0-100
4. 根据阈值决策:继续构建 / 暂停讨论 / 建议转向
## Decision Thresholds
| reality_signal | 决策 | 行动 |
|---|---|---|
| > 70 | STOP | 展示竞品,询问是否继续/转向/放弃 |
| 30-70 | 展示+建议 | 显示结果和 pivot_hints建议差异化角度 |
| < 30 | 直接构建 | 提示市场空白,批准开始编写代码 |
## Why It Matters
防止 AI Agent 犯最昂贵的错误:**在一个已被成熟方案解决的领域投入大量时间**。GitHub 上有 143,000+ AI code review 相关仓库,顶端方案已有 53,000+ stars——Agent 不知道是因为没有人告诉它去查,也没有人告诉它应该查。
## Relationship to Related Concepts
- [[Pre-Build Validation]] ← 前置于 [[Startup MVP Pipeline]]
- [[Pain Point Mining]] → [[Pre-Build Validation]] → [[Startup MVP Pipeline]](完整的产品发现到构建流程)
- [[Reality-Signal]] 是 [[Pre-Build Validation]] 的核心度量指标
- [[Agent-Build-Gate]] 是 [[Pre-Build Validation]] 的技术实现机制
## Aliases
- Pre-Build Gate
- Idea Validation Gate
- Pre-Build Checkpoint
## Related
- [[idea-reality-mcp]]
- [[Reality-Signal]]
- [[Competition-Analysis]]
- [[Pivot-Strategy]]
- [[Agent-Build-Gate]]
- [[Startup MVP Pipeline]]
- [[Pain Point Mining]]