Have a second AI review your agent-built app as if it must handle 10x the data
The footage search Claude Code built him looked done, until a second AI found every vector held in RAM, 8 to 10 GB at 1,000 hours of footage by Claude's estimate. His review prompt: list each problem as a numbered fix with the file, why and the exact change.
Source
@realwhonghom on X · 2026-10-19
Written in our own words. Credit to the original author. Link checked 2026-10-19.
What they did
The footage search Claude Code built him looked done, until a second AI found every vector held in RAM, 8 to 10 GB at 1,000 hours of footage by Claude's estimate. His review prompt: list each problem as a numbered fix with the file, why and the exact change.
Result (as claimed)
A memory problem caught before it hit at scale.
Tools they used
Cost: Claude Code: from $17/mo; OpenAI Codex: free plan, paid from $8/mo.
Set it up
Pick a contained repo or task
Start on a branch or side project where mistakes are cheap.
Install and configure
Set up Claude Code, OpenAI Codex. Read what it can run on your machine and limit permissions where possible.
Run it on a real task
Give it a well-scoped issue and let it work. Review the diff like any pull request.
Add guardrails
Keep tests and CI in the loop, and never let an agent push to main or touch production secrets unattended.
Copy the full setup prompt
Paste into your agent and it will walk you through the setup, asking before anything that sends, posts or spends.
You are helping me set up this AI use case end to end in Claude Code. Goal: Have a second AI review your agent-built app as if it must handle 10x the data What the original author did: The footage search Claude Code built him looked done, until a second AI found every vector held in RAM, 8 to 10 GB at 1,000 hours of footage by Claude's estimate. His review prompt: list each problem as a numbered fix with the file, why and the exact change. Reported result (as claimed by the author): A memory problem caught before it hit at scale. Source: https://x.com/realwhonghom/status/2112136936811045238 Tools they used: Claude Code, OpenAI Codex Category: Dev & ops Please: 1. Ask me 3 short questions about my situation (accounts I have, budget, what I want the output to look like). 2. Propose a step-by-step plan using these tools or cheaper alternatives, with the time and cost of each step. Use official pricing pages; say "check pricing" if unsure. 3. Then do the setup with me one step at a time, waiting for my OK before anything that sends messages, posts publicly, spends money or deletes data. 4. Finish with a checklist to run it again next time.
You are helping me set up this AI use case end to end in Codex. Goal: Have a second AI review your agent-built app as if it must handle 10x the data What the original author did: The footage search Claude Code built him looked done, until a second AI found every vector held in RAM, 8 to 10 GB at 1,000 hours of footage by Claude's estimate. His review prompt: list each problem as a numbered fix with the file, why and the exact change. Reported result (as claimed by the author): A memory problem caught before it hit at scale. Source: https://x.com/realwhonghom/status/2112136936811045238 Tools they used: Claude Code, OpenAI Codex Category: Dev & ops Please: 1. Ask me 3 short questions about my situation (accounts I have, budget, what I want the output to look like). 2. Propose a step-by-step plan using these tools or cheaper alternatives, with the time and cost of each step. Use official pricing pages; say "check pricing" if unsure. 3. Then do the setup with me one step at a time, waiting for my OK before anything that sends messages, posts publicly, spends money or deletes data. 4. Finish with a checklist to run it again next time.
You are helping me set up this AI use case end to end in Grok Bot. Goal: Have a second AI review your agent-built app as if it must handle 10x the data What the original author did: The footage search Claude Code built him looked done, until a second AI found every vector held in RAM, 8 to 10 GB at 1,000 hours of footage by Claude's estimate. His review prompt: list each problem as a numbered fix with the file, why and the exact change. Reported result (as claimed by the author): A memory problem caught before it hit at scale. Source: https://x.com/realwhonghom/status/2112136936811045238 Tools they used: Claude Code, OpenAI Codex Category: Dev & ops Please: 1. Ask me 3 short questions about my situation (accounts I have, budget, what I want the output to look like). 2. Propose a step-by-step plan using these tools or cheaper alternatives, with the time and cost of each step. Use official pricing pages; say "check pricing" if unsure. 3. Then do the setup with me one step at a time, waiting for my OK before anything that sends messages, posts publicly, spends money or deletes data. 4. Finish with a checklist to run it again next time.
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Guides for this use case
How to vibe code an app with Claude Code ยท How to run multiple coding agents together
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