I will debug and fix your API webhook or n8n automation

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leobarreto40
L
leobarreto40
Leonardo A

About this gig

An API call fails, a webhook never arrives, the payload is mapped incorrectly, an automation duplicates events, or an integration works once and then becomes unreliable.

I will debug a clearly defined, reproducible API, webhook, or automation problem. I trace the request path, inspect sanitized payloads and responses, isolate the failing component, apply the smallest safe correction, and validate the agreed end-to-end behavior.

Typical scope includes:

HTTP 400, 401, 403, 404, 422, or 500 errors

API key, OAuth, callback, or signature-validation problems

incorrect JSON mapping or missing fields

webhooks that do not fire or are processed twice

idempotency, retry, timeout, and error-handling issues

broken SaaS callbacks or custom API steps in n8n, Make, or Zapier

Message me before ordering when more than one integration, financial automation, production-only data, or an unclear workflow is involved.

Get to know Leonardo A

Leonardo A

AI App Rescue Vibe Coding APIs and Supabase

  • FromBrazil
  • Member sinceJun 2023
  • Avg. response time1 hour
  • Languages

    English, Portuguese
I help rescue and stabilize AI-built web apps made with Lovable, Base44, Bolt and Replit. I focus on reproducible bugs, Supabase Auth/RLS, APIs, webhooks, Python/FastAPI and deployment blockers. I combine a software QA background with hands-on automation work: diagnose the root cause, apply the smallest safe fix and verify clear acceptance criteria. Independent projects include BoiZap (WhatsApp automation with n8n, AI and Supabase), Sentinel (camera monitoring and alerts) and LeoFlix (local-first media streaming). I work with sanitized logs, least-privilege access and rollback plans.

My Portfolio