Lovable Skill for Claude

Lovable Integration Skill

This skill enables Claude Code to work effectively with Lovable.dev projects while respecting Lovable's deployment requirements.

When to Use This Skill

Activate when:

• User mentions "Lovable" or "lovable.dev"
• Project has supabase/ directory with Edge Functions
• User asks to deploy edge functions
• User creates database migrations
• User asks about Lovable Cloud or backend deployment
• Project appears to be a Lovable project (React + Supabase structure)

Project Architecture Types

Lovable supports two architectures. Always detect which one you're working with before giving advice.

Detecting Architecture

Check the root directory of the user's project:

• app.config.ts present → TanStack Start (new, SSR — post-April 2026)
• vite.config.ts present → Vite SPA (legacy, CSR — pre-April 2026)

Both are fully supported. Old projects remain on Vite and receive no forced migration.

Vite SPA Architecture (Legacy)

Projects created before April 2026. Client-side rendering only.

What Syncs Automatically (Vite SPA)

✅ Edit freely and push to main:

• src/ - All React components, pages, hooks, utils
• public/ - Static assets
• Config files - vite.config.ts, tailwind.config.js, tsconfig.json
• package.json - Dependencies
• supabase/functions/*/index.ts - Edge Function code (not deployment)
• supabase/migrations/*.sql - Migration files (not application)

What Requires Lovable Deployment (Vite SPA)

⚠️ After editing, provide Lovable prompt:

| Change Type | Lovable Prompt |

|-------------|----------------|

| Edge Function code | "Deploy the [name] edge function" |

| All Edge Functions | "Deploy all edge functions" |

| New migration file | "Apply pending Supabase migrations" |

| New table needed | "Create a [name] table with columns: [list]" |

| RLS policy | "Enable RLS on [table] allowing [who] to [what]" |

| Storage bucket | "Create a [public/private] bucket called [name]" |

| Secret/env var | Manual: Cloud → Secrets → Add |

TanStack Start Architecture (New Projects)

Projects created after April 2026. Full server-side rendering (SSR) via TanStack Start.

Key Differences from Vite SPA

• Routes are file-based in app/routes/ (not React Router in src/App.tsx)
• Config file is app.config.ts (not vite.config.ts)
• Server functions (createServerFn) let server-side logic live directly in component files — no edge function needed for simple server logic
• Files named *.server.ts are server-only and never sent to the browser
• Pages are rendered as complete HTML on the server before reaching the browser

What Syncs Automatically (TanStack Start)

✅ Edit freely and push to main:

• app/ - All routes, components, server functions, layouts
• app/routes/ - File-based route pages
• public/ - Static assets
• app.config.ts, tailwind.config.js, tsconfig.json - Config files
• package.json - Dependencies
• app//*.server.ts - TanStack server functions (auto-deploys, no Lovable prompt needed**)
• supabase/functions/*/index.ts - Supabase Edge Function code (not deployment)
• supabase/migrations/*.sql - Migration files (not application)

What Requires Lovable Deployment (TanStack Start)

⚠️ After editing, provide Lovable prompt:

| Change Type | Lovable Prompt |

|-------------|----------------|

| Supabase Edge Function code | "Deploy the [name] edge function" |

| All Supabase Edge Functions | "Deploy all edge functions" |

| New migration file | "Apply pending Supabase migrations" |

| New table needed | "Create a [name] table with columns: [list]" |

| RLS policy | "Enable RLS on [table] allowing [who] to [what]" |

| Storage bucket | "Create a [public/private] bucket called [name]" |

| Secret/env var | Manual: Cloud → Secrets → Add |

> Note: TanStack server functions (createServerFn) are not Supabase Edge Functions. They live in app/ and deploy automatically via GitHub sync — no Lovable prompt needed. Only supabase/functions/ requires manual deployment.

TanStack Start File Structure

project/
├── app/                          # ✅ Safe - auto-syncs
│   ├── routes/                   # File-based routing
│   │   ├── __root.tsx            # Root layout
│   │   ├── index.tsx             # Home page (/)
│   │   └── [route].tsx           # Other pages
│   ├── components/               # Shared UI components
│   ├── lib/                      # Utilities and helpers
│   └── *.server.ts               # ✅ Server functions (auto-deploy)
├── app.config.ts                 # TanStack Start config
├── public/                       # Static assets
├── supabase/
│   ├── functions/                # ✅ Edit code, ⚠️ needs deploy
│   └── migrations/               # ✅ Create files, ⚠️ needs apply
└── CLAUDE.md                     # Project context

Core Concept (Both Architectures)

Lovable uses two-way GitHub sync on the main branch only:

• Frontend and server-side code (including TanStack server functions) sync automatically
• Supabase Edge Functions and database migrations require Lovable prompts after code changes

Response Format

When backend deployment is needed, always output:

📋 **LOVABLE PROMPT:**
> "[exact prompt to copy-paste]"

For destructive operations, add:

⚠️ **Warning**: [explanation of risk]

File Structure Reference

Vite SPA (Legacy — vite.config.ts present)

project/
├── src/                          # ✅ Safe - auto-syncs
│   ├── components/
│   ├── pages/
│   ├── hooks/
│   ├── lib/
│   └── integrations/supabase/
│       ├── client.ts             # ⚠️ Has Supabase URLs
│       └── types.ts
├── supabase/
│   ├── functions/                # ✅ Edit code, ⚠️ needs deploy
│   │   └── [function-name]/
│   │       └── index.ts
│   ├── migrations/               # ✅ Create files, ⚠️ needs apply
│   │   └── YYYYMMDDHHMMSS_*.sql
│   └── config.toml               # ⚠️ Lovable Cloud manages
├── .env                          # Local only - Lovable ignores
└── CLAUDE.md                     # Project context

TanStack Start (New — app.config.ts present)

project/
├── app/                          # ✅ Safe - auto-syncs
│   ├── routes/                   # File-based routing
│   │   ├── __root.tsx            # Root layout
│   │   ├── index.tsx             # Home route (/)
│   │   └── [name].tsx            # Named routes
│   ├── components/               # Shared components
│   ├── lib/                      # Utilities
│   ├── integrations/supabase/    # Supabase client + types
│   └── *.server.ts               # ✅ Server functions (auto-deploy, no prompt needed)
├── app.config.ts                 # TanStack Start config
├── public/                       # Static assets
├── supabase/
│   ├── functions/                # ✅ Edit code, ⚠️ needs deploy via Lovable
│   │   └── [function-name]/
│   │       └── index.ts
│   ├── migrations/               # ✅ Create files, ⚠️ needs apply via Lovable
│   │   └── YYYYMMDDHHMMSS_*.sql
│   └── config.toml               # ⚠️ Lovable Cloud manages
├── .env                          # Local only - Lovable ignores
└── CLAUDE.md                     # Project context

Backend Types

Lovable Cloud

• Backend managed entirely by Lovable
• No Supabase dashboard access
• All operations via Lovable prompts
• Secrets in Cloud → Secrets UI

Own Supabase

• Direct Supabase dashboard access
• Can use Supabase CLI: supabase functions deploy
• More flexibility but manual setup

Quick Prompts Reference

Edge Functions

"Deploy all edge functions"
"Deploy the send-email edge function"
"Create an edge function called [name] that [description]"
"Show logs for [name] edge function"
"The [name] edge function returns [error]. Fix it"

Database

"Create a [name] table with columns: id (uuid), name (text), created_at (timestamp)"
"Add a [column] column of type [type] to [table]"
"Add foreign key from [table1].[col] to [table2].id"
"Apply pending Supabase migrations"

RLS Policies

"Enable RLS on [table]"
"Add RLS policy on [table] allowing authenticated users to read all rows"
"Add RLS policy on [table] allowing users to only access their own rows"

Storage

"Create a public storage bucket called [name]"
"Create a private storage bucket called [name]"
"Allow authenticated users to upload to [bucket]"

Auth

"Enable Google authentication"
"Enable GitHub authentication"
"When user signs up, create row in profiles table"

Branch Rules

• Only main syncs with Lovable
• Feature branches don't deploy until merged
• Lovable syncs within 1-2 minutes of push

Yolo Mode - Automated Deployments (Beta)

When yolo_mode: on in CLAUDE.md, deployments are automated via browser automation:

How It Works

Instead of showing manual prompts, the yolo skill (/skills/yolo/SKILL.md) takes over:

• Automatically navigates to Lovable.dev
• Submits deployment prompts
• Monitors for success/failure
• Runs verification tests (if enabled)
• Reports deployment summary

When Yolo Mode Activates

• During /lovable:deploy-edge command
• During /lovable:apply-migration command
• When yolo_mode: on in CLAUDE.md

Configure Yolo Mode

/lovable:yolo on               # Enable with testing
/lovable:yolo on --no-testing  # Enable without testing
/lovable:yolo on --debug       # Enable with verbose logs
/lovable:yolo off              # Disable

Beta Status

⚠️ Yolo mode is in beta:

• Requires Claude in Chrome extension
• May have bugs or UI compatibility issues
• Always has manual fallback
• See /skills/yolo/SKILL.md for details

Debugging Checklist

• Frontend not updating?
• On main branch?
• Changes pushed?
• Wait 1-2 min

• Edge Function not working?
• Deployed via Lovable (or yolo mode)?
• Secrets set in Cloud UI?
• Check logs in Lovable

• Database query failing?
• Migration applied (via Lovable or yolo mode)?
• RLS policies correct?
• Table exists?

• Yolo mode not working?
• Check yolo_mode: on in CLAUDE.md
• Chrome extension installed?
• Logged into Lovable?
• See yolo skill for troubleshooting