
★ 579
June 2026
AGPL-3.0
AI agents
What it does
Standalone verification for code changes and agent behaviour: it reads the diff for correctness and the conversation for whether the agent stayed on the goal, runnable from a terminal, as an agent skill, or in CI. Bring your own model — no account, no fees, requests go straight to your provider. The reviewer is a model too, so it can inherit the same misreading; treat it as one more gate, not a replacement for tests or a human. AGPL-3.0.
Summary based on the project's own description. The Japanese page has a fuller beginner guide: setup difficulty, what to prepare, and a step-by-step start.
Screenshots & visuals

Before you start
- Setup difficultySome setup needed
- Command lineRequired
- API keyRequired
- Sends data onlineYes
Judged automatically from the project's own metadata. Always confirm on the official page.
vet FAQ
- Is vet free?
- vet itself is free, but it needs an API key for an external AI service. That service charges separately, though some have a free tier.
- Do I need to install anything or write code to use vet?
- It needs the command line. If you are not comfortable typing commands, expect to get stuck during setup.
- Does vet work on a phone?
- No. It needs a computer.
- Can I use vet commercially?
- The licence is AGPL-3.0. Using it commercially is fine, but if you distribute something built on it you may be required to release that under the same licence. Keep it internal, or check before distributing.
How it compares
The conditions that decide whether you can actually use it, side by side.
| Tool | Command line | API key | Sends data out | Phone | Commercial use |
|---|---|---|---|---|---|
| vet (this page) | Required | Required | Yes | No | Yes |
| openclaw | Required | Required | Yes | No | Not verified |
| AutoGPT | Required | Required | Yes | No | Yes |
| langflow | Required | Required | Yes | No | Yes |
"Sends data out" means your input is uploaded to someone's server. Pick "No" when the material cannot leave your organisation.