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Pu.sh – a full coding-agent harness in 400 lines of shell

  • Hacker News

I originally was just messing with pi-autoresearch. Gave it a sample task to build the most portable coding agent. First cut was 6 KB of shell. Great for one-shots, unusable interactively. I was shocked it actually worked. Started building up -- adding features — but with a se...

  • Published: Apr 30, 2026
  • First seen: Apr 30, 2026
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AI Summary

I originally was just messing with pi-autoresearch. Gave it a sample task to build the most portable coding agent. First cut was 6 KB of shell. Great for one-shots, unusable interactively. I was shocked it actually worked. Started building up -- adding features — but with a se...

Best for

Teams evaluating AI product workflows / Builders comparing emerging tools / Operators tracking early category shifts

Why it matters

Primary discovery source is Hacker News.

Key Features

  • Primary public product URL is https://pu.dev/.
  • Description: I originally was just messing with pi-autoresearch. Gave it a sample task to build the most portable coding agent. First cut was 6 KB of shell. Great for one-shots, unusable interactively. I was shocked it actually wo....
  • Listed on Hacker News as "Pu.sh – a full coding-agent harness in 400 lines of shell".
  • Source description: I originally was just messing with pi-autoresearch. Gave it a sample task to build the most portable coding agent. First cut was 6 KB of shell. Great for one-shots, unusable interactively. I was shocked it actually wo....
  • Source publish date is 2026-04-30.

Use Cases

  • Primary discovery source is Hacker News.
  • Hacker News mention is recent (2026-04-30).
  • Primary public product URL is https://pu.dev/.
  • Description: I originally was just messing with pi-autoresearch. Gave it a sample task to build the most portable coding agent. First cut was 6 KB of shell. Great for one-shots, unusable interactively. I was shocked it actually wo....
  • Listed on Hacker News as "Pu.sh – a full coding-agent harness in 400 lines of shell".

Why Now

Pu.sh – a full coding-agent harness in 400 lines of shell is appearing on fresh discovery surfaces, so it is worth reviewing while momentum is still forming. Confidence is currently low (41/100), so treat this as an early signal rather than a settled trend.

Community Signals

Trend score

78.2

24h momentum

Rising

Hacker News points

65

Rising

Facts / Signals / Inference / Unknowns

Facts

  • Listed on Hacker News as "Pu.sh – a full coding-agent harness in 400 lines of shell".
  • Source description: I originally was just messing with pi-autoresearch. Gave it a sample task to build the most portable coding agent. First cut was 6 KB of shell. Great for one-shots, unusable interactively. I was shocked it actually wo....
  • Source publish date is 2026-04-30.
  • Description: I originally was just messing with pi-autoresearch. Gave it a sample task to build the most portable coding agent. First cut was 6 KB of shell. Great for one-shots, unusable interactively. I was shocked it actually wo....
  • Primary public product URL is https://pu.dev/.

Signals

  • Hacker News mention is recent (2026-04-30).
  • Primary discovery source is Hacker News.

Inference

Trust data is still pending

The evidence pipeline has not produced enough structured trust blocks for this product yet.

Unknowns

  • Documentation is not explicitly linked in the current allowed evidence set.
  • No tagline is stored on the current product record.
  • Pricing details are not explicitly linked in the current allowed evidence set.
  • Recent changelog or release history is not explicitly linked in the current allowed evidence set.

Evidence Snapshots

Pu.sh – a full coding-agent harness in 400 lines of shell

Listed on Hacker News as "Pu.sh – a full coding-agent harness in 400 lines of shell".

Pu.sh – a full coding-agent harness in 400 lines of shell official profile

Primary public product URL is https://pu.dev/.

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Original Sources

Hacker News