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Fiverr Pro
English
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USD
I will fix broken API integrations, deprecated apis and API migration issues
Olivia Carter
About this gig
Did a third-party API change, break, or become deprecated?
will troubleshoot your existing API integration, identify compatibility problems, and update the integration so your application works correctly again.
I can help with:
- Deprecated API endpoints
- API version migrations
- Breaking API changes
- Changed JSON response formats
- Authentication changes
- OAuth/token changes
- SDK compatibility problems
- REST API integration errors
- Third-party API failures
- API request/response mapping
- Node.js API integrations
- Webhook compatibility problems
- API documentation mismatches
- Rate-limit and timeout handling
What I will do:
- Review your existing integration
- Identify the breaking change or compatibility issue
- Update affected API requests
- Update response handling
- Fix authentication or SDK issues
- Test the updated integration
- Explain the changes made
This service is designed for existing applications and integrations that need repair or migration, not a complete application rebuild.
Please message me before ordering with the API/provider name, current version, API documentation, error message, technology stack and relevant code.
Get to know Olivia Carter
Olivia Carter
Nodejs Backend Developer, REST API and API Integration
- FromNigeria
- Member sinceFeb 2026
- Avg. response time1 hour
Languages
English, Spanish
Need a reliable developer to build your backend or connect your applications?
I specialize in API integration, REST API development, custom API development, and third-party API integration for websites, web apps, and SaaS platforms. I build Node.js backends, Stripe payment integrations, webhooks, database integrations, and scalable API solutions tailored to your business. Expect clean development, reliable results, and clear communication from start to finish.
My Portfolio
Other Software Development Services I Offer
FAQ
What types of API issues can you fix?
I can fix broken API integrations, deprecated endpoints, authentication errors, changed API responses, SDK compatibility issues, webhook problems, and other API migration issues
Can you migrate my API to a newer version?
Yes. I can update existing API integrations to a newer version, replace deprecated endpoints, update request/response handling, and test the integration.
Can you fix a third-party API that suddenly stopped working?
Yes. I can investigate the cause, identify compatibility or API changes, update the affected integration, and test the fix.
Which technologies do you work with?
I primarily work with JavaScript, Node.js, Express.js, REST APIs, webhooks, authentication systems, and third-party API integrations.
Can you fix authentication or API key problems?
Yes. I can troubleshoot API keys, JWT, OAuth/token issues, authorization errors, and authentication changes related to API integrations.
Do you work with deprecated APIs?
Yes. I can identify deprecated endpoints and update your existing integration to the supported API version where documentation and access are available.
Can you fix API integrations without rebuilding my application?
Yes. When possible, I will modify only the affected integration and related code instead of rebuilding your entire application.
What do you need from me before starting?
Please provide the API documentation, error message or logs, relevant code/files, API version, expected behavior, and access details required to reproduce the issue.
Can you work with APIs that are not listed in your gig?
Yes, as long as the API provides accessible documentation and the required integration is technically supported. Please contact me first so I can review it.
Will you test the API after migration?
Yes. I will test the affected endpoints and integration flow to verify that the updated API works as expected.
