P0 AI coding harness

What hackers pick instead

• GitHub CopilotRecommended as a cheap way to use many AI models with smooth VS Code integration and autocompletion, though critics resent tightening request limits, pricing changes and ads in PRs.571recommend
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• Grok Build CLIFast, smooth terminal coding agent that people find capable and recommend; critics say it uploads whole directories, including secrets, to xAI.66recommend
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• Claude Code VS Code extensionBrings Claude Code into VS Code for reviewing and editing code in a GUI. Main caveat: a lookalike extension on the Cursor marketplace reportedly contained malware.31recommend

Every quote

The 15 most detailed of 18 comments. Each links to the original.

1. p0 allowed to drastically improve per engineer velocity, AI code quality and iterate faster with working prototypes

   Recommends · Mar 2026 · in “Show HN: P0 – Yes, AI can ship complex features into real codebases”

2. a purpose-built harness that treats feature development as a structured pipeline, not an open-ended chat.

   Recommends · Mar 2026 · in “Show HN: P0 – Yes, AI can ship complex features into real codebases”

3. IMO that is the best implementation of self-generating repo rules I have seen.

   Recommends · Mar 2026 · in “Show HN: P0 – Yes, AI can ship complex features into real codebases”

4. handles the entire process in an app that you can just set up and run with

   Recommends · Mar 2026 · in “Show HN: P0 – Yes, AI can ship complex features into real codebases”

5. With p0 you get one out of the box that we have been and keep tweaking.

   Recommends · Mar 2026 · in “Show HN: P0 – Yes, AI can ship complex features into real codebases”

6. once the requirements are defined, the harness executes autonomously

   Recommends · Mar 2026 · in “Show HN: P0 – Yes, AI can ship complex features into real codebases”

7. so far have shipped 3 features to production. Very helpful tool!

   Recommends · Mar 2026 · in “Show HN: P0 – Yes, AI can ship complex features into real codebases”

8. Standards generation is great. I really like that approach.

   Recommends · Mar 2026 · in “Show HN: P0 – Yes, AI can ship complex features into real codebases”

9. it worked really well for us – awesome tool!

   Recommends · Mar 2026 · in “Show HN: P0 – Yes, AI can ship complex features into real codebases”

10. $100 / month is too pricey for hackers

    Mixed · Mar 2026 · in “Show HN: P0 – Yes, AI can ship complex features into real codebases”

11. works really well in our opinion

    Recommends · Mar 2026 · in “Show HN: P0 – Yes, AI can ship complex features into real codebases”

12. Actually really promising! How does it differ from Claude Code? Massive opportunity right here!

    Recommends · Mar 2026 · in “Show HN: P0 – Yes, AI can ship complex features into real codebases”

13. Sounds great! I heard about the product two weeks ago

    Recommends · Mar 2026 · in “Show HN: P0 – Yes, AI can ship complex features into real codebases”

14. it forces you to focus on the fundamentals

    Recommends · Mar 2026 · in “Show HN: P0 – Yes, AI can ship complex features into real codebases”

15. insane team behind this, will be big

    Recommends · Mar 2026 · in “Show HN: P0 – Yes, AI can ship complex features into real codebases”