Guide · Updated July 2026
TL;DR
- Lovable has five fix paths: the free Try to Fix button, chat investigation, revert-and-re-prompt, Plan mode, and Code mode — work them in that order.
- "Try to fix" costs no credits, but if the same error keeps coming back, Lovable's own docs say to stop retrying and escalate.
- Build messages cost 0.50–1.70 credits each and the free plan grants 5 a day — vague re-prompts are the expensive way to debug.
- GitHub sync is two-way: clone the repo, fix the bug with Claude Code, Codex, or Cursor, push to the active branch, and the fix flows back into Lovable.
- A marked-up screenshot of the broken state beats paragraphs of description — in Lovable's chat and in any coding agent.
Lovable Vibe Coding: When Your App Breaks
Lovable is one of the fastest ways to vibe code an app into existence: describe what you want, watch it build. Then the first real error appears, the "Try to fix" button stops working after the third click, and you discover the part of vibe coding nobody demos — debugging an app you didn't write. This guide is the escalation ladder for exactly that moment: what each Lovable fix path does, what it costs in credits, and when to stop re-prompting and hand the repo to a real coding agent.
The Lovable debugging ladder
Lovable gives you five ways to fix a broken app. They're not interchangeable — each rung costs more (in credits or effort) and reaches deeper. Work them in order:
| Rung | What it does | Credit cost |
|---|---|---|
| 1. "Try to fix" | Appears on the activity card when a build error hits. Lovable scans the logs, finds the issue, and attempts a fix | Free — doesn't use credits |
| 2. Investigate in chat | Describe the problem and what you expected. Lovable can inspect errors, logs, and console output, and test your app in a browser | Per-message, by complexity |
| 3. Revert and re-prompt | Use version history to roll back to before things broke, then re-prompt with a clearer description | The re-prompt's message cost |
| 4. Plan mode | Outline the approach first, then rebuild step by step instead of one big prompt | Flat 1 credit per message |
| 5. Code mode / your own agent | Inspect and edit the code directly in Lovable, or sync to GitHub and fix it outside | Free (your time instead) |
The single most common mistake is staying on rung 1. "Try to fix" is free, so it's tempting to keep clicking — but Lovable's own docs are blunt about it: if the error keeps coming back, retrying the same approach isn't going to fix it. That's your signal to climb.
What a fix attempt actually costs
Debugging by vague re-prompt is the expensive way to do it. Lovable prices messages by task complexity, and the free plan gives you 5 build credits a day (up to 30 a month) — so a frustrated evening of "still broken, please fix" can burn a week of free credits without moving the bug:
| Message | Cost |
|---|---|
| "Try to fix" button | 0 credits |
| Simple update ("Make the button gray") | 0.50 credits |
| Remove a component ("Remove the footer") | 0.90 credits |
| Add a feature ("Add authentication with sign up and login") | 1.20 credits |
| Complex build ("Build me a landing page, use images") | 1.70 credits |
| Plan mode | 1 credit per message, flat |
The economics reward precision. One message that says exactly what's broken, where, and what you expected beats five that say "it's still not working." A screenshot of the actual broken state — with the broken thing marked — is the cheapest debugging tool you have, because it turns a 3-message guessing game into a 1-message fix. That's the whole thesis of the screenshot-to-fix loop, and it applies to Lovable's chat the same as any coding agent.
When Lovable can't fix it: hand the repo to a real agent
Some bugs don't yield to re-prompting — the fix keeps regressing, or the error lives somewhere Lovable's loop can't reach. This is when Lovable's GitHub integration becomes the escape hatch, because the sync is two-way: changes made in Lovable sync to GitHub, and changes pushed to the active GitHub branch sync back into Lovable.
That means the full agent-CLI toolbox applies to your Lovable app:
- Connect GitHub and clone the repo locally. Lovable's docs say it directly: you can clone the repository and continue working in your preferred IDE.
- Point a coding agent at it. Claude Code, Codex, or Cursor can read the whole codebase, reproduce the bug, and fix it with the discipline Lovable's chat can't — running tests, checking the blast radius, explaining the broken flow before touching it. (Picking one? Start with Claude Code vs Cursor.)
- Show the agent the bug, don't describe it. The same rule as inside Lovable, but stronger — a marked-up screenshot of the broken state is the context an agent acts on correctly the first time. See how to show your agent what's wrong.
- Push to the active branch. Lovable only edits and syncs one branch at a
time — by default the repo's default branch, usually
main. Fix on that branch and the repair flows straight back into your Lovable project; fix on a side branch and Lovable never sees it.
One direction to know about: the integration is export-only. You can take a Lovable project out to GitHub, but you can't import an existing repo into Lovable — so once your debugging workflow lives outside, the outside tools are permanent members of the team.
Why your Lovable app breaks the way it does
Nothing here is unique to Lovable. Apps built by describing outcomes to an AI break in the same predictable ways whatever built them: happy-path-only logic, missing error states, silent rewrites of features you didn't touch. The failure classes — and the paste-into-your-agent audit checklist that catches them before your users do — are covered in the vibe debugging field guide. Run the checklist against your Lovable repo after the GitHub sync; it's the fastest way to find the bugs you haven't met yet.
Frequently asked questions
Why does Lovable keep failing to fix my error?
"Try to fix" scans the logs and attempts a repair, but it retries from the same context each time — so a bug it missed once, it usually misses again. Lovable's docs recommend escalating instead of re-clicking: investigate in chat (Lovable can inspect errors, logs, and console output), revert to a version before the bug and re-prompt more precisely, or switch to Plan mode and rebuild the change step by step.
Does Lovable's 'Try to fix' button use credits?
No — clicking "Try to fix" doesn't use credits. Regular build messages do, priced by complexity: roughly 0.50 credits for a simple update, up to 1.70 for a complex build, with Plan mode at a flat 1 credit per message. The free plan grants 5 build credits a day, up to 30 a month.
Can I edit my Lovable app's code myself?
Yes, two ways. Code mode inside Lovable lets you inspect and edit the code directly. For more than a quick edit, connect GitHub: the sync is two-way, so you can clone the repo, work in your own IDE or with a coding agent, and pushes to the active branch sync back into Lovable automatically.
How do I debug a Lovable app with Claude Code or Codex?
Connect the project to GitHub, clone the repo locally, and open it with the agent like any other codebase. Hand it the bug as evidence — a marked-up screenshot, the exact error text, the step that triggered it — rather than a description. Commit the fix to the branch Lovable is syncing (usually main) and the repaired code flows back into your Lovable project.
Is Lovable good for vibe coding?
It's one of the fastest builders in the category — a working first version from a paragraph of description. The honest caveat applies to every tool in the space: building is the easy half. What separates shipped Lovable apps from abandoned ones is a debugging loop for when it breaks, which is what this guide — and the wider vibe debugging field guide — covers.