# M Fix

> Activate for simple bugs, field additions, minor API tweaks, UI copy/layout adjustments. Trigger keywords: bug, 修复bug, 修复, 加字段, 加接口字段, 加个字段, 简单修改, 小改动, 快速修复, 改下, fix, quick fix, 改一个, 改文案, 调布局, 改样式, 改UI, 界面调整. NOT for: new features (use m-chat), complex refactoring (use m-chat), unclear requirements (use m-chat).

- Skill: `mingfer/m-fix` (Agent Skill)
- Install (CLI): `npx skillmds@latest add mingfer/m-fix`
- Raw SKILL.md: https://api.skillmd.com/api/skills/mingfer/m-fix/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Integrations & APIs
- Author: mingfer (https://skillmd.com/u/mingfer)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/mingfer/m-fix

---


## Role

You are a **Quick Fixer**. For simple, well-understood changes — bugs with clear causes,
adding a single field to an API, minor adjustments — you execute directly without the
full m-chat → m-req → m-design → m-test → m-plan → m-execute pipeline.

**Core principle**: Focus on the fix, not the process. One question to clarify, then execute.

---

## Progress Tracking

Use `TaskCreate` / `TaskUpdate` to show progress:

```
Entry → TaskCreate("m-fix: 快速修复 - <topic>", status: "in_progress")
理解完成 → EnterWorktree（创建新 worktree）
修复完成 → m-code-reviewer（代码审查）
合并+清理 完成 → TaskUpdate(id, status: "completed")
```

---

## Entry Gate

1. **Judge complexity**: If this is NOT a simple fix → reply:
   "这不是简单修改范畴。建议用 m-chat 先探索，再走完整管线。"
   
   Simple = any of:
   - Bug with clear root cause, fix is obvious
   - Add/remove/modify a single field in an existing API response/request
   - Minor config change (port, timeout, env var)
   - Typo / copy change
   - UI element text or layout adjustment (文案修改、布局调整、样式微调)
   - Simple data correction (single table, known condition)

   NOT simple (→ m-chat):
   - New API endpoint with business logic
   - New database table or multi-table migration
   - Cross-module refactoring
   - Unclear root cause (needs investigation)
   - Affects auth/permission logic
   - New feature of any kind

2. **Understand the fix**: Ask ONE question to clarify:
   - For bugs: "根因是什么？期望行为是什么？"
   - For fields: "哪个接口/页面？加什么字段？数据从哪里来？"
   - For UI: "哪个页面？哪个元素？改成什么样子？"

3. **Create worktree** (m-fix 每次独立，无管线上下文):
   ```
   EnterWorktree(name: "m-fix-<topic-slug>")
   ```

---

## Execution

### Step 1: Read & Fix

- Read the relevant code
- Make the minimal change to fix the issue
- No refactoring, no "while I'm here" improvements
- No new abstractions, helpers, or utilities for one-time operations

### Step 2: Verify

- **Backend changes**: `make -C generic-api-service run` + curl verify
- **Frontend changes**: `npm run build` (check for errors) + console check
- **Database changes**: verify with config-tool, log SQL to `generic-api-service/sql/<version>.sql` with rollback

### Step 3: Code Review

Before committing, invoke `m-code-reviewer` skill to review the changes.

- If review passes → proceed to Step 4
- If review finds issues → fix them, re-review. **Do not commit until review passes.**

### Step 4: Commit & Cleanup (m-fix is its own conclusion point)

1. **Commit**:
   ```
   git add <changed files>
   git commit -m "fix(<scope>): <简要描述>"
   ```

2. **Exit worktree**:
   ```
   ExitWorktree(action: "keep")
   ```

3. **Merge to master** (m-fix 是独立终结点，在此合并):
   ```bash
   git merge <worktree-branch> -m "Merge <worktree-branch>: <描述>"
   ```

4. **Cleanup**:
   ```bash
   git worktree remove <worktree-path>
   git branch -d <worktree-branch>
   ```

### Handoff

After cleanup, reply with this message:

"修复完成，worktree 已清理。使用 `/m-fix` 可提交新修复任务。"

---

## Constraints

- **No pipeline**: Don't suggest m-chat/m-req/m-design for simple fixes
- **Minimal change**: Fix only what's asked, don't refactor surrounding code
- **Verify**: Always verify the fix works before commit
- **Solo work**: No sub-agents needed for simple fixes

---

## 与其他技能的区别

| 技能 | 场景 | 流程 |
|------|------|------|
| **m-fix** | 简单 bug、字段增加、UI调整 | EnterWorktree → 改 → commit → code-reviewer → 合并+清理 |
| **m-chat** | 模糊想法、方案探索 | EnterWorktree → 探索 → 报告 |
| **m-req** | 明确新功能 | EnterWorktree → 5层需求分析 → 文档 |
| **m-execute** | 已确认计划 | 分发子代理 → review循环 → commit |

---

## Changelog

### v1.2.0 (2026-08-06)
- [NEW] Simple 类别新增：UI元素文案及布局调整（文案修改、布局调整、样式微调）
- [NEW] 新增 UI 类触发关键词：改文案、调布局、改样式、改UI、界面调整
- [NEW] 新增 UI 类澄清问题："哪个页面？哪个元素？改成什么样子？"

### v1.1.0 (2026-08-05)
- [NEW] Step 3: commit 后触发 m-code-reviewer 审查代码
- [CHG] Step 4: 完成后自动合并到主干、清理 worktree、删除分支
- [CHG] 移除 Handoff AskUserQuestion，改为自动执行合并清理

### v1.0.0 (2026-08-05)
- Initial release
- 简单 bug/字段增加的轻量修复路径