Docs & PDF Q&A

SAG

Scattered documents into knowledge you can trace back

Visit official page 日本語で詳しく見る

Popularity

★ 2.4k

Last update

August 2026

License / pricing

MIT

What it does

Ingests documents and data and turns them into a searchable, interconnected knowledge base where every answer carries a path back to its source — traceability being the design emphasis rather than an afterthought. Note that the project has been rewritten and the previous version is archived and unmaintained, so make sure documentation you find matches the version you run. Ingested material reaches your model provider. 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 difficultySome setup needed
Command lineRequired
API keyRequired
Sends data onlineYes

Judged automatically from the project's own metadata. Always confirm on the official page.

SAG FAQ

Is SAG free?: SAG 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 SAG?: It needs the command line. If you are not comfortable typing commands, expect to get stuck during setup.
Does SAG work on a phone?: No. It needs a computer.
Can I use SAG 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
SAG (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.

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What it does

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.

SAG FAQ

Is SAG free?

SAG 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 SAG?

It needs the command line. If you are not comfortable typing commands, expect to get stuck during setup.

Does SAG work on a phone?

No. It needs a computer.

Can I use SAG 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
SAG (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.