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Why do large requests fail at the proxy boundary?

For engineers diagnosing size-dependent 502s; returns ranked causes, one test, and a fix.

Works with
  • Cursor
  • GitHub Copilot
  • DeepSeek
The prompt136 words · 3 blanks

Troubleshoot [symptom_evidence] for requests crossing [proxy_chain] and failing near [failure_threshold_kb] KB. Fill…

The full prompt is in the app

Free — no subscription needed. Fill in the blanks there, then copy it into Cursor.

What you fill in

  • Failure evidence[symptom_evidence]Example502 response, proxy and application logs, request sizes, and reproduction notes
  • Request path[proxy_chain]ExampleCDN to load balancer to application
  • Approximate threshold KB[failure_threshold_kb]Example1024

How to use it

  1. 1Open it in PromptVault. Find it in Coding, or search for “Why do large requests fail at the proxy boundary?”.
  2. 2Fill in the 3 blanks. failure evidence, request path and approximate threshold kb — the only things the prompt cannot know.
  3. 3Copy and paste it into Cursor. It also works with GitHub Copilot and DeepSeek.

About this prompt

“Why do large requests fail at the proxy boundary?” is a beginner coding prompt. For engineers diagnosing size-dependent 502s; returns ranked causes, one test, and a fix. It is 136 words long and written to get a usable answer on the first message, in Cursor, GitHub Copilot and DeepSeek or any other chat assistant. Good for: troubleshooting, debugging, devops, performance and beginner friendly. Like every prompt in PromptVault, it was written and edited in-house, and it works offline once the app is installed.

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