Common Issues general

Third-Party Integration Not Working (APIs, Webhooks, OAuth)

Your app integrates with a third-party service (Google, Stripe, Twilio, OpenAI, etc.) and the integration stopped working or never worked properly. API calls fail, webhooks don't fire, or OAuth login redirects go nowhere.

Common Causes

  • API keys expired, revoked, or not set in production
  • Webhook URL points to localhost or an old deployment URL
  • OAuth redirect URIs don't match the actual app URL
  • Rate limits hit — the API is blocking requests because you're making too many
  • API version changed and the integration code uses an outdated version

How to Fix It

  1. Check the third-party service's dashboard for error logs or failed requests
  2. Verify all API keys are current and set in your production environment
  3. Update webhook URLs to point to your production domain
  4. Check OAuth redirect URIs in the third-party service's settings
  5. Test the API calls directly (using Postman or curl) to isolate the issue

Real developers can help you.

Omar Faruk Omar Faruk As a Product Engineer at Klasio, I contributed to end-to-end product development, focusing on scalability, performance, and user experience. My work spanned building and refining core features, developing dynamic website templates, integrating secure and reliable payment gateways, and optimizing the overall system architecture. I played a key role in creating a scalable and maintainable platform to support educators and learners globally. I'm enthusiastic about embracing new challenges and making meaningful contributions. Taufan Taufan I’m a product-focused engineer and tech leader who builds scalable systems and turns ideas into production-ready platforms. Over the past years, I’ve worked across startups and fast-moving teams, leading backend architecture, improving system reliability, and shipping products used by thousands of users. My strength is not just writing code — but connecting product vision, technical execution, and business impact. hanson1014 hanson1014 Full-stack developer experienced in fixing and deploying AI-generated apps from Lovable, Bolt.new, Cursor, and Replit. I specialize in debugging Supabase integration issues (auth flows, RLS policies, database connections), fixing broken deployments, resolving routing/blank screen problems, and cleaning up messy React/Vite codebases. I also build production apps with the Claude API and have shipped a Mac desktop dev tool (Nexterm from scratch. Based in Hong Kong, fast turnaround. MFox MFox Full-stack professional senior engineer (15+years). Extensive experience in software development, qa, and IP networking. Daniel Vázquez Daniel Vázquez Software Engineer with over 10 years of experience on Startups, Government, big tech industry & consulting. ISHANTDEEP SINGH ISHANTDEEP SINGH Senior Software Engineer with 7+ years of experience in React, JavaScript, TypeScript, Next.js, and Node.js. I’ve also worked as a tech lead for startups, owning end-to-end technical execution including architecture, development, scaling, and delivery. I bring a strong mix of hands-on coding, product thinking, and technical leadership, and I’m comfortable building products from scratch as well as improving and scaling existing systems. PawelPloszaj PawelPloszaj I'm fronted developer with 10+ years of experience with big projects. I have small backend background too David Olverson David Olverson Solo dev shipping production apps with AI-assisted development. I specialize in rescuing broken Lovable/Bolt/Cursor builds and taking them to production. 10+ apps shipped including SaaS CRMs, gaming platforms, real estate tools, and Discord bots. Stack: Next.js 16, TypeScript, Tailwind CSS, FastAPI, PostgreSQL, Prisma. I use Claude Code with 50+ custom skills for rapid delivery. Average turnaround: 2-4 weeks from broken prototype to production. rayush33 rayush33 JavaScript (React.js, React Native, Node.js) Developer with demonstrated industry experience of 4+ years, actively looking for opportunities to hone my skills as well as help small-scale business owners with solutions to technical problems BurnHavoc BurnHavoc Been around fixing other peoples code for 20 years.

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Frequently Asked Questions

The integration worked before. Why did it stop?

API keys might have expired, the service might have updated their API version, or your webhook URL might have changed after a redeployment.

Can a developer set up the integration properly?

Yes. A developer can debug the failing integration, update API configurations, and ensure everything is properly connected.

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