I will fix bugs in your python fastapi backend and API


About this gig
I repair small, reproducible bugs in existing Python FastAPI APIs: incorrect responses, validation problems, pagination errors and endpoint logic.
Message me before ordering with the failing request, expected response and setup details. I confirm that the issue can be reproduced and fits the package.
Basic covers one bug in one endpoint. Standard covers up to two bugs across two endpoints. Premium covers up to three bugs across three endpoints.
Delivery includes updated source or a Git patch, relevant automated regression checks, test results and run instructions. I use AI-assisted development tools and verify the work against the agreed requirements.
Excluded: new applications, new integrations, authentication redesigns, security audits, data recovery, production data changes, hosting, paid services and production deployment. Revisions correct the agreed scope; extra endpoints or features require a separate quote.
Gallery examples are original demonstrations with fictional data. They show actual local test results, not client outcomes.
Get to know yishuqing
Vue Frontend and Python FastAPI Web Development
- FromChina
- Member sinceMay 2026
Languages
English, Chinese
FAQ
Which projects do you support?
Existing Python FastAPI projects that can run locally with shareable source, setup instructions and test data. Please discuss Django, Flask, proprietary services or unavailable dependencies first.
What counts as one bug?
One reproducible root cause with one agreed expected result in the scoped endpoint. Several symptoms from separate causes count separately. I confirm this before ordering.
What if the issue cannot be reproduced?
I will request a minimal example, sanitized logs or test fixture before recommending an order. I will not promise a fix without sufficient access or evidence.
What will you test?
A relevant regression check for each agreed fix and the runnable existing checks relevant to the change. This is not a full security, load or platform compatibility assessment.
Does this include deployment or new integrations?
No. This Gig covers existing endpoint logic. Hosting, live data changes, paid services and new third-party integrations require separate scope and authorization.
Are the examples from paying clients?
No. They are self-built samples. The included source, response fixtures and pytest reports let you reproduce the results.

