Docs & PDF Q&A

OpenContracts

Annotate a document pile into something machines can query

Visit official page 日本語で詳しく見る

Popularity

★ 1.4k

Last update

August 2026

License / pricing

MIT

What it does

Point it at a repository of documents and you get a citation graph: human annotations and AI-extracted fields, each traceable back to where it came from, reachable through an API, an MCP server, or a team-facing UI. Self-hosted, with a public demo that was live on 2026-08-17. Contract text reaches whichever model you configure — check that against your confidentiality obligations first — and extractions are reading aids, never a substitute for legal advice. 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.

OpenContracts FAQ

Is OpenContracts free?: OpenContracts 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 OpenContracts?: It needs the command line. If you are not comfortable typing commands, expect to get stuck during setup.
Does OpenContracts work on a phone?: No. It needs a computer.
Can I use OpenContracts 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
OpenContracts (this page)	Required	Required	Yes	No	Yes
LangChain	Required	Required	Yes	No	Yes
Docling	Required	Not needed	No	No	Yes
llm-app	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.

Other docs & pdf q&a tools

LangChain

The standard framework for building AI applications

Docling

IBM's smart document converter for AI

llm-app

RAG templates that stay in sync with the documents behind them

PrivateGPT

Ask questions about your documents completely offline.

Browse all tools Home

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.

OpenContracts FAQ

Is OpenContracts free?

OpenContracts 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 OpenContracts?

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

Does OpenContracts work on a phone?

No. It needs a computer.

Can I use OpenContracts 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
OpenContracts (this page)	Required	Required	Yes	No	Yes
LangChain	Required	Required	Yes	No	Yes
Docling	Required	Not needed	No	No	Yes
llm-app	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.