miniprogram-development

WeChat Mini Program development skill for building, debugging, previewing, testing, publishing, and optimizing mini program projects. This skill should be used when users ask to create, develop, modify, debug, preview, test, deploy, publish, launch, review, or optimize WeChat Mini Programs, mini program pages, components, tabBar, routing, navigation, icon assets, project structure, project configuration, project.config.json, appid setup, device preview, real-device validation, WeChat Developer Tools Nightly workflows, wechatide CLI, WeChat IDE Skills/MCP, console/network debugging, miniprogram-ci preview/upload flows, or mini program release processes. It should also be used when users explicitly mention CloudBase, wx.cloud, Tencent CloudBase, 腾讯云开发, 微信云开发, or 云开发 in a mini program project.

Standalone Install Note

If this environment only installed the current skill, start from the CloudBase main entry and use the published cloudbase/references/... paths for sibling skills.

• CloudBase main entry: https://cnb.cool/tencent/cloud/cloudbase/cloudbase-skills/-/git/raw/main/skills/cloudbase/SKILL.md
• Current skill raw source: https://cnb.cool/tencent/cloud/cloudbase/cloudbase-skills/-/git/raw/main/skills/cloudbase/references/miniprogram-development/SKILL.md

Keep local references/... paths for files that ship with the current skill directory. When this file points to a sibling skill such as auth-tool-cloudbase or web-development, use the standalone fallback URL shown next to that reference.

Cross-cutting protocols (required before code changes or uploads):

• Change Safety Protocol: https://cnb.cool/tencent/cloud/cloudbase/cloudbase-skills/-/git/raw/main/skills/cloudbase/references/cloudbase-platform/references/protocols/change-safety-protocol.md
• Deployment Gate: https://cnb.cool/tencent/cloud/cloudbase/cloudbase-skills/-/git/raw/main/skills/cloudbase/references/cloudbase-platform/references/protocols/deployment-gate.md

Activation Contract

Use this first when

• The request is about WeChat Mini Program structure, pages, preview, publishing, or CloudBase mini program integration.

Read before writing code if

• The user mentions wx.cloud, CloudBase mini programs, OPENID, mini program deployment/debug workflows, Nightly DevTools, wechatide, or WeChat IDE Skills.

Then also read

• CloudBase auth -> ../auth-wechat-miniprogram/SKILL.md (standalone fallback: https://cnb.cool/tencent/cloud/cloudbase/cloudbase-skills/-/git/raw/main/skills/cloudbase/references/auth-wechat-miniprogram/SKILL.md)
• CloudBase document DB -> ../cloudbase-document-database-in-wechat-miniprogram/SKILL.md (standalone fallback: https://cnb.cool/tencent/cloud/cloudbase/cloudbase-skills/-/git/raw/main/skills/cloudbase/references/cloudbase-document-database-in-wechat-miniprogram/SKILL.md)
• Mini Program WeChat Pay or Integration Center generated payment functions -> ../cloudbase-wechat-integration/SKILL.md (standalone fallback: https://cnb.cool/tencent/cloud/cloudbase/cloudbase-skills/-/git/raw/main/skills/cloudbase/references/cloudbase-wechat-integration/SKILL.md; official docs: https://docs.cloudbase.net/integration/wechat-pay-miniprogram/index.md)
• UI generation -> ../ui-design/SKILL.md (standalone fallback: https://cnb.cool/tencent/cloud/cloudbase/cloudbase-skills/-/git/raw/main/skills/cloudbase/references/ui-design/SKILL.md) first

Do NOT use for

• Web auth flows or Web SDK-specific frontend implementation.
• WeChat Pay, payment callbacks, refunds, or Official Account OAuth details; use cloudbase-wechat-integration for those scenarios.

Common mistakes / gotchas

• Generating a Web-style login flow for mini programs.
• Mixing Web SDK assumptions into wx.cloud projects.
• Applying CloudBase constraints before confirming the project actually uses CloudBase.
• Assuming Stable WeChat Developer Tools includes Nightly Skills/wechatide (it may not).
• Forcing CloudBase MCP Tencent Cloud login for daily mini program cloud ops when Nightly wechatide already works.
• Inventing wechatide tool names or flags instead of using --help / Nightly tools.yaml.
• Making code or configuration changes without first following the Change Safety Protocol (cloudbase-platform/references/protocols/change-safety-protocol.md).
• Performing mini program upload/publish without first completing the checks in cloudbase-platform/references/protocols/deployment-gate.md.

When to use this skill

Use this skill for WeChat Mini Program development when you need to:

• Build or modify mini program pages and components
• Organize mini program project structure and configuration
• Debug, preview, or publish mini program projects
• Work with WeChat Developer Tools workflows
• Handle mini program runtime behavior, assets, or page config files
• Integrate CloudBase in a mini program project when explicitly needed

Do NOT use for:

• Web frontend development (use web-development)
• Pure backend service development (use cloudrun-development or cloud-functions as appropriate)
• UI design-only tasks without mini program development context (use ui-design)

---

How to use this skill (for a coding agent)

1. Start with the general mini program workflow

   • Treat WeChat Mini Program development as the default scope
   • Do not assume the project uses CloudBase unless the user or codebase indicates it

2. Follow mini program project conventions

   • Keep mini program source under the configured mini program root
   • Ensure page files include the required configuration file such as index.json
   • Check project.config.json before suggesting preview or IDE workflows

3. Route by scenario

   • If the task involves debugging, previewing, publishing, opening DevTools, console/network, or wechatide, read debug and preview reference first
   • If choosing between WeChat IDE Skills and CloudBase MCP, read WeChat IDE Skills vs CloudBase MCP
   • If the task involves CloudBase, wx.cloud, cloud functions, CloudBase database/storage, or CloudBase identity handling, read CloudBase integration reference
   • If the task involves tabBar, icon assets, or label spacing, prefer the text-only custom tabBar default below unless the user explicitly requires icons

4. Use CloudBase rules only when applicable

   • CloudBase / 微信云开发 is an important mini program integration path, but not a universal requirement
   • Only apply CloudBase-specific auth, database, storage, or cloud function constraints when the project is using CloudBase

5. Recommend the right preview/debug/cloud-ops path

   • Prefer Nightly WeChat Developer Tools (built-in Skills/MCP) and execute via wechatide when available — see devtools-debug-preview.md
   • Nightly download: https://developers.weixin.qq.com/miniprogram/dev/devtools/nightly_backup.html
   • If Nightly / wechatide is unavailable, fall back to miniprogram-ci for preview/upload and CloudBase MCP for cloud resources

---

WeChat Mini Program Development Rules

General Project Rules

1. Project Structure

   • Mini program code should follow the project root configured in project.config.json
   • Keep page-level files complete, including .json configuration files
   • Ensure referenced local assets actually exist to avoid compile failures

2. Configuration Checks

   • Check project.config.json before opening, previewing, or publishing a project
   • Confirm appid is available when a real preview, upload, or WeChat Developer Tools workflow is required
   • Confirm miniprogramRoot and related path settings are correct

3. Resource Handling

   • For tabBar, prefer a text-only custom tabBar by default when the user does not explicitly need icons. This avoids icon asset handling, removes reserved icon space, and makes the label area easier to align.
   • Only generate local icon assets and configure iconPath / selectedIconPath when the user explicitly asks for tab icons or the design requires them.
   • When generating local asset references such as icons, ensure the files are downloaded into the project.
   • Keep file paths stable and consistent with mini program config files.

Recommended default for simple tabBar

Use tabBar.custom = true, keep only pagePath and text in app.json, and render text-only items in the custom component so there is no icon slot and no extra blank area above the label.

app.json

json

{
  "tabBar": {
    "custom": true,
    "list": [
      { "pagePath": "pages/index/index", "text": "首页" },
      { "pagePath": "pages/travel/travel", "text": "行程" },
      { "pagePath": "pages/my/my", "text": "我的" }
    ]
  }
}

Keep the custom tabBar layout text-only, and use flex centering or matching height and line-height to remove the blank area above the label. Switch to downloaded local icons only when the user explicitly wants icon-based tabs.

CloudBase as a Mini Program Sub-Scenario

• If the user explicitly uses CloudBase, wx.cloud, Tencent CloudBase, 腾讯云开发, or 云开发, follow the CloudBase integration reference
• In CloudBase mini program projects, use wx.cloud APIs and CloudBase environment configuration appropriately
• Do not apply CloudBase-specific rules to non-CloudBase mini program projects

Debugging, Preview, and Publishing

• Prefer Nightly DevTools + wechatide for open project, compile, simulator, console/network debug, preview, upload, and daily cloud ops (WeChat login — no separate Tencent Cloud login)
• Always pass required context: -c <clientName>, absolute --project, valid appid, and cloud env when needed
• If Nightly / wechatide is not available, use miniprogram-ci as the fallback for preview/upload/npm, and CloudBase MCP for cloud resources; tell the user to install Nightly for full Skills/MCP
• For detailed workflows, read debug and preview reference and WeChat IDE Skills vs CloudBase MCP

Minimal project skeleton

app.js

js

App({
  onLaunch() {
    console.log("Mini Program launched");
  },
});

pages/index/index.js

js

Page({
  data: {
    message: "Hello CloudBase Mini Program",
  },
});

pages/index/index.wxml

xml

<view class="page">
  <text>{{message}}</text>
</view>

pages/index/index.json

json

{
  "navigationBarTitleText": "Home"
}

project.config.json

json

{
  "appid": "your-mini-program-appid",
  "projectname": "cloudbase-mini-program",
  "miniprogramRoot": "./",
  "compileType": "miniprogram"
}

References

• CloudBase Mini Program Integration — use this when the mini program project explicitly integrates CloudBase
• WeChat DevTools Debug and Preview — Nightly / wechatide paths, required context, and no-Nightly fallbacks
• WeChat IDE Skills vs CloudBase MCP — layering and when to use which execution surface
• Common Pitfalls — read before generating code for optional chaining, TDesign styling, Canvas + storage, and environment issues