
Docs & PDF Q&A
vault-ai
Stand up your own question box over your own documents
★ 3.4k
July 2025
MIT
Docs & PDF Q&A
What it does
A Go server plus React front-end that ingests your files — books, letters, ordinary human-readable documents rather than code — and answers questions from them, using OpenAI for generation and Pinecone for storage. There is a hosted demo, but real use means deploying it. Development stopped in July 2025, and the Pinecone dependency ties you to another service's pricing; newer alternatives keep more of this local. MIT.
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 difficultyFor advanced users
- Command lineRequired
- API keyRequired
- Sends data onlineYes
Judged automatically from the project's own metadata. Always confirm on the official page.
vault-ai FAQ
- Is vault-ai free?
- vault-ai 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 vault-ai?
- It needs the command line. If you are not comfortable typing commands, expect to get stuck during setup.
- Does vault-ai work on a phone?
- No. It needs a computer.
- Can I use vault-ai commercially?
- The licence is MIT, which permits commercial use. Conditions such as keeping the copyright notice still apply, so read the licence text before shipping it inside something.
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 |
|---|---|---|---|---|---|
| vault-ai (this page) | Required | Required | Yes | No | Yes |
| LlamaIndex | Required | Required | Yes | No | Yes |
| PageIndex | Required | Required | Yes | No | Yes |
| kotaemon | 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.