zeroshot By The Open Engine Company

If you need to look at the code,
you’re already behind.

A workflow engine for coding agents, built to enforce your team’s QA process. For engineering teams whose agents write code faster than anyone can review it.

Runs our own million-line codebase

2,000+ GitHub stars · engineers at 300+ companies, including
  • Google
  • Microsoft
  • Amazon
  • NVIDIA
  • Meta
  • GitHub
  • Cloudflare

Your CI starts at the PR. zeroshot starts at the issue.

goalworkeracceptancereviewcode reviewboth ok?PRCImergepassnofailrepairagainyou, reading the diffnot anymoree2e testtests the featureissue #4225writesjudgesbuilt inboots the stackturn your best engineer’s judgment into a process. goalissue #4225workeracceptancereviewcodereviewboth ok?PRCImergepassfailnorepairagainyou, readingthe diffe2e testtests the featurewritesjudgesbuilt inboots the stackturn your best engineer’sjudgment into a process.

ideas:

see it work.

An arctic flight game, built with and without zeroshot.

Original build with Codex on GPT-6 Astra (without zeroshot)

Original low-poly arctic landscape and airplane

Open game

With zeroshot

Later floatplane, glacial terrain and aurora

Open game

The zeroshot graph used for this experiment

workerbuilds the gamefunctionalityvisualintegrityall ok?approvednorepairagainyes workerbuilds the gamefunctionalityvisualintegrityall ok?approvednorepairagainyes
Run start: ribbed glacier walls and a simple red-and-white planeRun start
Candidate 1: a redesigned floatplane and instruments, the same ribbed glacier wallsCandidate 1
Candidate 2: broken shelves and floating ice replace the continuous wallsCandidate 2
Candidate 3: broader snow-capped ridges and a finished floatplaneCandidate 3
round 1round 2round 3

An autoresearch run

10 iterations made an exact geometry computation 21× faster on CPU.

ideas.

workeracceptancecode reviewbugfinderui revieweradversarial e2edeliverany no: back to the worker with the reason.all yeswritesjudgesbuilt inboots the stack workeracceptancecode reviewbugfinderui revieweradversarial e2edeliverany no: back to the workerwith the reason.all yes

go to bed :)

today

0 PRs shipped1 PR shipped

with zeroshot

0 PRs shipped1 PR shipped2 PRs shipped3 PRs shipped4 PRs shipped5 PRs shipped6 PRs shipped7 PRs shipped8 PRs shipped9 PRs shipped10 PRs shipped11 PRs shipped12 PRs shipped13 PRs shipped14 PRs shipped15 PRs shipped16 PRs shipped17 PRs shipped18 PRs shipped19 PRs shipped20 PRs shipped21 PRs shipped22 PRs shipped23 PRs shipped24 PRs shipped25 PRs shipped26 PRs shipped27 PRs shipped28 PRs shipped29 PRs shipped30 PRs shipped

illustrative run
agents
Claude Code · Codex · Copilot CLI · Pi, mixed per step. On your own keys, direct or via OpenRouter, Bedrock or your own gateway.
ships to
GitHub · GitHub Enterprise · GitLab
runs on
Our cloud: every run gets its own environment, in parallel, off your engineers’ laptops. AWS, hosted in the EU. Or your own machine: the engine is open source.

Free for one run at a time, then $100 a month for each extra run in parallel, not per seat. Models run on your own API keys.

from the blog.

who's building it.

zeroshot is built by The Open Engine Company.