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  3. Lovable Integration Gotchas for APIs and applications

Lovable Integration Gotchas for APIs and applications

Gotchas: The 5 Core Gotcha Categories

1. The "Secret Exposure" Gotcha

Pattern: Storing API keys, tokens, or credentials in client-side code or state

  • Why it happens: Prompts say "add API key input" but don't specify where to store it

  • Fix pattern: Always add "store securely in Supabase" or "use environment variables" or "handle through Supabase Edge Functions"

  • Template addition: "Store <credentials> securely in <Supabase/Edge Functions> and never expose in client code"

2. The "No Error State" Gotcha

Pattern: Happy-path-only implementations that break silently when APIs fail

  • Why it happens: Prompts focus on success scenarios without handling failures

  • Fix pattern: Always specify "with error handling for <specific failures>" and "loading states during API calls"

  • Template addition: "Include error handling for <failed auth/rate limits/network errors> with user-friendly error messages and retry logic"

3. The "CORS Nightmare" Gotcha

Pattern: Direct API calls from client fail due to CORS restrictions

  • Why it happens: Many APIs don't allow browser-based requests for security

  • Fix pattern: Route sensitive API calls through Supabase Edge Functions or serverless endpoints

  • Template addition: "Call <external API> through Supabase Edge Functions to avoid CORS issues and secure credentials"

4. The "Missing State Management" Gotcha

Pattern: Data fetched but not properly stored, causing re-fetches or lost data

  • Why it happens: Prompts describe fetching data but not managing it over time

  • Fix pattern: Specify both "fetch AND store in React state/Supabase" with "refresh/sync strategy"

  • Template addition: "Store <fetched data> in <React state/Supabase> with <refresh interval/manual sync> and cache invalidation"

5. The "Webhook Black Hole" Gotcha

Pattern: Webhooks configured but no endpoint to receive them or no handler for the data

  • Why it happens: Prompts mention "webhook integration" without implementation details

  • Fix pattern: Always specify "create webhook endpoint in Supabase Edge Functions that receives, validates, and processes webhook payloads"

  • Template addition: "Create a webhook endpoint at <URL> that receives <service> webhooks, validates signatures, parses payload, and updates <Supabase table> with proper error logging"

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