Make your PR review agent cheaper, faster and better with two tweaks
Michael Thiessen shipped a change to his team's PR review agent built on two simple tweaks.
Source
@MichaelThiessen on X · 2026-10-22
Written in our own words. Credit to the original author. Link checked 2026-10-23.
What they did
Michael Thiessen shipped a change to his team's PR review agent built on two simple tweaks.
Result (as claimed)
He reports it became 12x cheaper, 6x faster and caught 4x as many real issues.
Tools they used
Cost: GitHub: free plan, paid from $4/user/mo. Checked 2026-10-14.
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 AI coding agent, GitHub. 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: Make your PR review agent cheaper, faster and better with two tweaks What the original author did: Michael Thiessen shipped a change to his team's PR review agent built on two simple tweaks. Reported result (as claimed by the author): He reports it became 12x cheaper, 6x faster and caught 4x as many real issues. Source: https://x.com/MichaelThiessen/status/2113346979757523382 Tools they used: AI coding agent, GitHub 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: Make your PR review agent cheaper, faster and better with two tweaks What the original author did: Michael Thiessen shipped a change to his team's PR review agent built on two simple tweaks. Reported result (as claimed by the author): He reports it became 12x cheaper, 6x faster and caught 4x as many real issues. Source: https://x.com/MichaelThiessen/status/2113346979757523382 Tools they used: AI coding agent, GitHub 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: Make your PR review agent cheaper, faster and better with two tweaks What the original author did: Michael Thiessen shipped a change to his team's PR review agent built on two simple tweaks. Reported result (as claimed by the author): He reports it became 12x cheaper, 6x faster and caught 4x as many real issues. Source: https://x.com/MichaelThiessen/status/2113346979757523382 Tools they used: AI coding agent, GitHub 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 get AI code review on your pull requests · How to cut AI coding agent costs and token use · How to automate work with n8n and AI
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