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I will do fix claude code vibe coding ai claude ai cowork complet claude code dashboard
Mercier A
About this gig
Built an app with Claude Code, but the dashboard is broken, login keeps failing, or deployment won't work?
You don't need more AI prompts. You need someone to trace the problem and fix the code.
WHAT I CAN FIX OR COMPLETE
- Claude Code and vibe coding bugs, crashes, blank pages
- React, Next.js, TypeScript, Node.js and build errors
- SaaS MVPs, admin dashboards, analytics, client portals
- Supabase/Firebase auth, RLS, database queries and sessions
- Claude API, MCP server, REST API and webhook connections
- Stripe checkout, subscriptions and payment webhooks
- Vercel/Netlify deployment, env vars and custom domains
- UI issues, mobile responsiveness and slow pages
- Unfinished features, broken forms and code cleanup
- Claude Code setup, CLAUDE.md, skills and project workflows
- Claude Cowork setup for file, reporting and repeat tasks
I work from your existing project where possible. I'll review the error, agree on the scope, make the change, test the affected flow and explain what was fixed.
Cowork tasks are scoped separately from app development.
Send your repo or app link, the error/screenshot and what the finished result should do before ordering.
Get to know Mercier A
Mercier A
AI APP DEVELOPER, LOVABLE, BASE44 AND WEB SOLUTIONS
- FromFrance
- Member sinceOct 2026
- Avg. response time1 hour
Languages
English, French, Spanish
Hi, I an Mercier, I specialize in AI website development, vibe coding and building functional web apps using Lovable AI, Base44, Replit, Bolt, Claude Code, and Supabase. I help businesses and startups develop SaaS MVPs, fix bugs, integrate APIs, connect databases and deploy responsive websites and applications.
From AI-generated app improvements to full-stack development, WordPress, Wix and Shopify solutions, I deliver clean designs, reliable functionality and scalable digital solutions.
My Portfolio
FAQ
Can you fix an existing project built with Claude Code?
Yes. I can review your existing project, identify the issue, fix the affected code, and test the result. You don't need to rebuild the whole app.
Can you complete my unfinished AI dashboard?
Yes. I can work on existing SaaS dashboards, admin panels, analytics pages, and client portals. Send the project and the missing features so I can confirm the scope.
Can you fix Supabase authentication and database errors?
Yes. I can troubleshoot login problems, session issues, RLS policies, database queries, and Supabase connections. I will review the cause before changing the configuration.
Do you help with Claude Cowork and MCP server setup?
Yes. I can help configure Claude Cowork workflows, Claude Code project instructions, skills, and supported MCP integrations. The exact setup depends on your tools and permissions.
Can you fix my app if it works locally but fails on Vercel?
Yes. I can investigate deployment errors, missing environment variables, build failures, API endpoints, and hosting configuration on supported platforms.
Do you work with projects created using other AI coding tools?
Yes. I can review code exported from Lovable, Cursor, Replit, Base44, and Bolt, provided the source code and required project access are available.
What if my project is larger than the Premium package?
Send your requirements first. I'll review the existing project and discuss a custom offer based on the features, integrations, and testing needed.
