Zeroshot

What is Zeroshot?

Zeroshot is an open-source multi-agent framework that keeps the agent writing code away from the one approving it. A worker agent makes the change, independent reviewers and tests check it, and a repair loop handles rejections. It runs on your existing Claude Code or Codex login, locally, self-hosted, or in the cloud.

Top Features:

• Separation: the worker agent never approves its own code changes before merge.
• Graphs: add reviewers, test steps, and repair loops, or rewire the whole flow.
• Models: assign a different model to each agent, including OpenAI and Anthropic.

Use Cases:

• Delegation: hand off a task and get a change that already passed review.
• Epics: submit dependent jobs that start once their prerequisites have merged.
• Autoresearch: run repeated experiments scored by three independent judges after each iteration.

Who Can Use Zeroshot?

• Engineers: stop reading every agent diff by hand before trusting the result.
• Platform teams: run shared agent queues on their own servers or cloud.
• Researchers: automate experiment loops with independent judges and fully recorded results.

Pricing

• Open source (free): the MIT-licensed CLI runs locally or on your own server.
• Cloud lane (free): one included cloud lane runs a single job at a time.
• Extra lanes ($100 per month): each added lane lets one more cloud job run in parallel.

Pros and Cons

Pros:

• No API keys: local runs reuse your Claude Code or Codex subscription login.
• Open source: the full CLI is MIT licensed with about 1,900 GitHub stars.
• Hosting: run it on a laptop, a Docker server, or the hosted cloud.

Cons:

• Setup: requires Node.js 18 or newer and comfort working in the terminal.
• Token usage: extra reviewer agents mean more tokens spent on every task.
• Scaling cost: each extra parallel lane adds $100 to the monthly bill.

FAQs:

1) Do I still review the code?

No, your reviewers and tests decide, though you can still open a pull request.

2) Does it replace Claude Code or Codex?

No, it runs those tools as the worker and as separate reviewers.

3) How do I install it?

Install the CLI globally from npm, which needs Node.js 18 or newer.

4) Which models can it use?

It works with Codex, Claude Code, OpenAI, Anthropic, OpenRouter, and Bedrock models.

5) Where is the cloud hosted?

It runs in the EU and adds a shared team queue for jobs.