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I will build and test one production-ready Node.js API integration
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5 days
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Description
Ship one working Node.js or TypeScript API integration in five days.
I will connect one external REST API or webhook provider to an existing Node.js backend, or deliver a focused standalone Express or Fastify service.
You receive:- up to three API endpoints for one provider;- schema and input validation with structured error handling;- secure environment-variable configuration;- webhook signature verification when applicable;- five automated Jest or Vitest tests;- a Dockerfile or clear local run instructions;- a concise README and one revision.
Good fit for payment or stablecoin providers, SaaS integrations, CRM, notification, analytics, AI APIs, webhook receivers, and event processing.
Scope: one provider, up to three endpoints, one environment, and one documented workflow. Production hosting, paid third-party services, large frontends, smart-contract audits, data migration, and ongoing maintenance are separate.
I work with public documentation, sandbox credentials, or sanitized examples only. Never send private keys, seed phrases, production wallet credentials, or live customer data.
About the seller
Instructions
Please provide:
1. The external API or webhook provider and public documentation.
2. The existing repository or the desired endpoints and request/response behavior.
3. The current Node.js version, framework, and test command.
4. Sanitized sample payloads or sandbox credentials through the platform’s approved secure method.
5. The expected success, error, and retry behavior.
6. The deployment target only if deployment has been agreed separately.
Remove customer data and replace every production secret with a test value. Do not send private keys, seed phrases, live wallet credentials, production API keys, or live funds.
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