
Fix API integration and webhook issues in your website or app
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What you get with this Offer
I can help debug and fix one clear API, webhook, or backend integration issue in your website, web app, or existing codebase. This could be a failed API request, broken webhook, authentication problem, JSON/response issue, bad endpoint, or a frontend-to-backend connection bug.
I'm Lee, a UK-based developer with 6+ years of programming experience. I work with technologies such as JavaScript, Node.js, TypeScript, Python, PHP, FastAPI, Laravel, and more. I'm comfortable working in existing projects, reading logs, checking API responses, and finding what is actually causing the issue.
What I can help with:
- Failed API requests
- Broken webhook handlers
- REST API integration issues
- Authentication or API key problems
- JSON/data formatting errors
- Frontend-to-backend connection bugs
- Payment/order/status webhook issues
- API response or error debugging
- Small backend integration fixes
What is included:
- Investigation of one clear API, webhook, or integration issue
- A clean fix where the issue is within the agreed scope
- Testing where your access/setup allows
- A clear explanation of what was changed
- Friendly communication throughout
Please message me before ordering so I can quickly check the issue and confirm it fits this offer. If the task is larger, involves multiple systems, or needs a full integration built from scratch, I can still help but we may need to agree a custom scope first.
What the Freelancer needs to start the work
To get started, please send as much of the following as you can:
- A short description of the API, webhook, or integration issue
- What is currently happening
- What should happen instead
- Any error messages, logs, screenshots, or failed API responses
- The technology/framework used, if you know it
- Relevant API documentation or webhook setup details
- Access to the code, repository, staging site, or files needed to investigate
- Any test credentials or sandbox details, if required
If you are not sure about some of this, that is completely fine. Just send what you have and I'll guide you from there.
Please avoid sharing sensitive production secrets unless they are genuinely needed. If you do need to share API keys or credentials, I recommend using temporary/test credentials where possible and rotating them afterwards.