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I will integrate one rest API into react or nextjs
Marko C.
About this gig
Need one external REST API connected to an existing React or Next.js app?
I will implement one clearly defined API flow: one existing button, form, or page state connected to one documented REST endpoint using one HTTP method.
Included:
request and response mapping
JSON handling
loading, success, and error states
one documented static API key or bearer-token method where applicable
basic verification in a local, development, test, or sandbox environment
source changes and a short written handoff
This Gig is for an existing app and a documented API.
Not included: webhooks, OAuth or token refresh, authentication systems, payments, database changes, multiple endpoints, GraphQL, file uploads, background jobs, new backend services, broad refactoring, production deployment, or ongoing support.
If the API documentation, credentials, or endpoint behavior is incomplete or unavailable, I will report the blocker rather than silently expand the scope.
If your flow involves auth, payments, webhooks, multiple endpoints, or you are unsure whether it fits, message me before ordering.
Get to know Marko C.
Marko C.
React and Next JS QA, Repairs and API Integrations
- FromSerbia
- Member sinceJun 2026
Languages
English, Serbian
I help founders and small businesses test, fix, and extend React and Next.js websites and web apps. Current work focuses on pre-launch QA, clearly defined repairs, and small REST API integrations, including AI-built or vibe-coded projects. I’m a solo operator. My workflow is human-led and AI-assisted: scope is agreed in writing, work is personally reviewed, and delivery includes a clear handoff. I prefer async, defined work over open-ended development, production firefighting, or emergency support.
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FAQ
What exactly counts as one REST API flow?
One existing UI action or page state connected to one documented REST endpoint using one HTTP method. For example, one form submitting to one POST endpoint or one page loading data from one GET endpoint.
What do you need before starting?
I need the existing React or Next.js codebase, local setup instructions, the exact API documentation and endpoint, an example request and expected response, and confirmation that the existing app currently runs locally.
Can you work with both React and Next.js?
Yes. The package is for an existing React or Next.js application. The exact implementation depends on whether the API can be called safely from the browser or requires a server-side request.
Are API keys or bearer tokens included?
One straightforward documented static API key or bearer-token method can be included. Development, sandbox, or temporary least-privilege credentials are preferred. OAuth, token refresh, login systems, and broader authentication work are excluded.
What if the API cannot be called directly from the browser because of CORS or secret handling?
For Next.js, one thin server-side route may be included only to protect or forward the single agreed request. For a React-only frontend, a safe existing backend path must already be available if direct browser calls are not possible. Building a new backend service is outside this package.
Are webhooks included?
No. This Gig is intentionally for one REST API request flow. Inbound or outbound webhooks require separate scope.
Are payments, authentication, databases, or deployment included?
No. Payments, authentication-system changes, OAuth, database writes or schema changes, file uploads, background jobs, and production deployment are outside the base package.
What happens if the API documentation or endpoint does not work as described?
I will identify and document the blocker. This package does not include reverse engineering an undocumented API, repairing a third-party provider, or silently adding backend work. If the requirement materially differs from the ordered scope, extra work requires a separate custom offer.
