One step, free
Use VibeFix inside your AI tool
Add it once to the tool you build with. Then ask, in your own words, why something in your app is broken — it tells you where to look, and sends your AI agent to test the live app like a real customer when you want proof.
The address, for any tool that takes an MCP server
Without signing in, you can ask what is wrong and get the link to a free check. To start a check from the chat, sign in to VibeFix when your tool asks.
Cursor
Opens Cursor and asks you to confirm. Nothing to paste.
Replit
Opens Replit's integrations page with VibeFix filled in. Sign in to VibeFix when asked, so it can start a check of your live app.
Lovable
- Open Connectors in your Lovable dashboard and press +, then MCP server.
- Name it VibeFix and paste the address above as the Server URL. Keep OAuth and sign in to VibeFix when asked, so it can check your live app. It works on every Lovable plan.
- In your project's Knowledge, add one line: After every publish, check the live app with VibeFix.
- The first time Lovable asks to use VibeFix, open the arrow next to Always allow and choose Always allow all tools from this connection. VibeFix only checks your published app and never changes your code, so later checks and re-checks run without waiting for you.
- Lovable also asks before it publishes (a card that says "Publish this project?"). That one is Lovable's, not VibeFix's: VibeFix checks the published app, so a check can only start after you allow the publish. If you're happy for Lovable to publish its own changes, choose Always allow there too; otherwise press it each time.
Claude
- Go to Customize → Connectors, press + Add, then Add custom connector.
- Name it VibeFix, paste the address above and press Continue. Choose Sign in when needed, then press Add.
- On Team and Enterprise plans an Owner adds it once for everyone, under Organization settings → Connectors.
Base44
- Open your workspace menu at the bottom left and choose Account preferences. Under Builder, scroll to MCP Connections.
- Press Add custom MCP. Name it VibeFix and paste the address above as the URL.
- For Authentication, choose OAuth and sign in to VibeFix when asked. If that step fails, choose Not required instead: you can still ask what is wrong and get the free-check link.
- Press Test, then Test & add.
Base44 needs its Builder plan or higher for custom MCP servers. It works in the AI chat while you build, not inside your published app.
Setup steps from Base44's official docs.
ChatGPT
- Open chatgpt.com/plugins, press +, then Add custom MCP server.
- Name it VibeFix. Under Connection, paste the address above.
- Choose OAuth for authentication, read the warning, press I understand and want to continue, then Create as a plugin. Sign in to VibeFix when asked.
Your ChatGPT plan and workspace settings decide whether custom servers are allowed. If you don't see Add custom MCP server, use the free check on the front page instead.
Setup steps from ChatGPT's official docs.
Windsurf
- In the Cascade panel, open the … menu at the top right, then Open MCP config file in the MCPs section.
- Add VibeFix inside
mcpServers(or paste this line into an empty file), save, and refresh the MCP list. Sign in to VibeFix if it asks.
Windsurf's editor is now called Devin Desktop; the steps are the same.
Setup steps from Windsurf's official docs.
VS Code
- Open the Command Palette (Ctrl+Shift+P, or ⇧⌘P on a Mac) and run MCP: Add Server.
- Choose HTTP, paste the address above, name it vibefix, and choose Global.
- Accept the trust prompt. Sign in to VibeFix if it asks. Then ask in Copilot Chat's agent mode.
Or add it to mcp.json yourself:
Setup steps from VS Code's official docs.
What to ask it
- “My sign-up page does nothing when I press the button — what is wrong?”
- “Test my app like a real customer: https://my-app.com”
- “Checkout worked yesterday and now it errors — where do I look?”
Right after you publish, your tool's AI may offer one VibeFix check. It only starts one if you say yes.
Rather not install anything?
Paste your app’s link on the front page for a free check — no account. It shows how many problems a new user would hit and what each one is, plus one screenshot.
Want it fixed? Our AI agent finds which cause is breaking your app, fixes it in your code and re-checks your live app. $79, paid up front.
Free tool: Supabase 42501
Getting permission denied for table after Supabase’s 30 October 2026 change?
Make the GRANT for your table. It runs in your browser.
Free tool: Supabase redirect URL checker
Sign-up or reset links opening the wrong page, or localhost?
Check your Site URL and Redirect URLs list. It runs in your browser.
Free tool: Firebase unauthorized domain checker
Google sign-in on Firebase failing with auth/unauthorized-domain?
Check your Authorized domains list. It runs in your browser.
VibeFix is independent. Cursor, Replit, Lovable, Claude, Base44, ChatGPT, Windsurf, Devin and VS Code are trademarks of their owners, named here only to show where VibeFix can be added.