zeroshot

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

A meta-harness for coding agents, built for teams that write code faster than they can review it.

npm install -g @the-open-engine-company/zeroshot
Starred by engineers at
  • Google
  • Microsoft
  • Amazon
  • NVIDIA
  • Meta

Turn your best engineer’s judgment into a process.

goalworkeracceptancereviewcode reviewboth mustapprovePRCImergepassnofailrepairagainyou, reading the diffnot anymoreadversarialtestissue #4225writesjudgesbuilt inboots the stackIndependent review#4225#4225 goalissue #4225workeracceptancereviewcodereviewboth mustapprovePRCImergepassfailnorepairagainyou, readingthe diffadversarialtestwritesjudgesbuilt inboots the stackIndependent review#4225#4225

Enforce your own QA workflow as a cyclic graph

We wrote a blog post about how the SDLC changes when agents build, test and review the code.

imagine shipping as fast as you can plan.

illustrative run · queue issues with dependencies; zeroshot runs every one through your QA workflow

go to bed :)

today

0 PRs shipped1 PR shippedit broke checkout.

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#90 too. tests caught it first.

illustrative run

see it work.

Claude Code on Opus 5.5 builds the page from the same README in all three.

worker → design slop reviewer → repair

a custom graph for this experiment

Round 1: sent back

  • Too long: the README poured into ten screens.
  • Apart from the demo, it could be any dev tool’s page.
  • On phones the staged demo run loses its “illustrative” label and passes as real.

Round 2: accepted

Five screens instead of ten.

read the reviewer’s promptopen the page

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

what you get.

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 in Frankfurt. Or your own machine, on your Claude, ChatGPT or Copilot subscription: the engine is open source.
security
SSO · Org roles · DPA · we don’t train models on your code

who's building it.

zeroshot is built by The Open Engine Company.