Explorar las categorías
Explora
Fiverr Pro
Español
$
USD
I will fix API errors, integration issues and API bugs
Daniel gret
Acerca de este Servicio
Is your API returning errors, failing to connect, or not working correctly?
I will troubleshoot and fix API errors, integration problems, bugs, authentication issues, webhook problems, and other API-related issues.
I can help with
- API Errors & Failed Requests
- REST API Troubleshooting
- API Integration Problems
- Authentication & Authorization Issues
- API Key & Token Problems
- Webhook Errors
- CORS Errors
- JSON & Data Response Issues
- Third-Party API Problems
- API Endpoint Errors
- Rate Limit & Request Issues
- Backend API Bugs
- API Connection Problems
- Existing API Integration Fixes
- API Testing & Debugging
I can troubleshoot existing APIs and integrations, identify the source of the problem, fix the issue, and test the solution.
I can work with REST APIs, third-party APIs, webhooks, backend systems, databases, and API-enabled platforms.
Please contact me before ordering if your issue involves a complex API, multiple systems, or a large existing codebase so I can review the requirements and confirm the scope.
Conoce a Daniel gret
Daniel gret
API Development and Integration
- DeCanadá
- Miembro desdesep 2026
Idiomas
Inglés, Español, Francés
I am a developer specializing in API development, integrations, troubleshooting, automation, webhooks, and backend solutions. I work with REST APIs, GraphQL, third-party APIs, authentication, data synchronization, CRM, ERP, payment and shipping integrations. I also fix API errors, broken integrations, webhook issues, data mapping problems, and backend API bugs. My focus is on finding the root cause of technical problems and delivering reliable solutions tailored to each project.
FAQ
What type of API problems can you fix?
I can troubleshoot API errors, authentication problems, failed requests, incorrect responses, webhook issues, integration problems, CORS errors, and other API-related issues.
Can you fix REST API errors?
Yes. I can troubleshoot REST API requests, endpoints, headers, authentication, parameters, responses, and backend errors.
Can you fix third-party API integrations?
Yes. I can troubleshoot integrations between your application and third-party platforms when API access and documentation are available.
Can you fix API authentication problems?
es. I can troubleshoot API keys, tokens, OAuth, authorization, permissions, headers, and related authentication issues.
Can you fix webhook problems?
es. I can troubleshoot webhook endpoints, authentication, payloads, event handling, failed requests, and related issues.
Can you troubleshoot API errors using Postman?
Yes. When appropriate, I can use API testing tools such as Postman to inspect requests, responses, headers, authentication, and endpoints.
Can you fix API bugs in an existing application?
Yes. I can review the existing code and integration, identify the issue, and implement a fix according to the project scope.
Can you fix 401, 403, 404 or 500 API errors?
Yes. I can investigate the cause of common HTTP/API errors and determine whether the problem is related to authentication, permissions, endpoints, server logic, request data, or the integration.
What do you need to start?
Please provide the API documentation, error message or screenshot, relevant endpoint/request details, expected behavior, and access to the necessary code or testing environment.
Can you troubleshoot a complex API integration?
Yes. For complex integrations involving multiple systems, please contact me before ordering so I can review the requirements and confirm the scope.
