CIDAH · Open-source legal AI

We didn't reinvent the wheel.
We put Ferrari wheels on the best stack in the world.

Launch the application →
app.cidah-ai.pro · Open Source · v1.0
Credits

CIDAH is built on open-source infrastructure created by others. This page names them.

Claude Letta n8n LibreChat
We believe that applying the open source philosophy to our patents will strengthen rather than diminish our position.
Elon Musk, Tesla blog — "All Our Patent Are Belong To You", June 12, 2014
01 — The stack

Four components.
Chosen, not invented.

Each of these is a project we build on — and owe to. Everything CIDAH does sits on top of their work.

01 · Intelligence
Claude
by Anthropic — reasoning engine
Every substantive reasoning step in CIDAH runs through Claude. Legal analysis, document drafting, deadline extraction, compliance review — all of it. We chose Claude because of Anthropic's commitment to Constitutional AI and because it's the model our attorneys reach for when the work actually matters.
Opus 4.x Tool use Long context anthropic.com
02 · Memory
Letta
by Letta Inc. — stateful agents
Legal work is not a one-shot chat. Matters span years. Letta — descending from the MemGPT research at UC Berkeley's Sky Computing Lab — gives CIDAH the architecture to scope memory per matter, per client, per jurisdiction. Deterministic, auditable, reversible.
MemGPT lineage Matter-scoped letta.com
03 · Workflows
n8n
by n8n GmbH — automation
Every deadline alert, every document classification, every routing rule inside CIDAH is an n8n workflow. Visual when it needs to be, code when it has to be, logged either way.
Self-hosted Fair-code n8n.io
04 · Interface
LibreChat
by Danny Avila + community — chat surface
The interface our attorneys actually touch is LibreChat. Role-gated, self-hosted, privilege-aware. We extend it; we don't replace it.
MIT licensed Self-hosted librechat.ai
02 — Why this stack

Not our opinion.
The market's.

Selected public statements from people who use these components at scale. We include them because the decisions we made rest partly on decisions they made first.

Claude is incredible. Anthropic made a huge leap in coding and reasoning. We use it all over our company. Anybody who has a software company really ought to get involved and use it.
Jensen Huang
CEO, NVIDIA — Davos WEF, January 2026
We are just starting to understand how to build compound AI systems around large foundation models.
Ion Stoica
Professor, UC Berkeley · Co-founder, Databricks — on backing Letta, 2024
n8n was the big unlock. Tools like ChatGPT and Claude are great, but n8n is the thing that allows you to integrate AI into your work and your processes in a safe and controlled way.
Ollie Scheers
CTO, Huel
n8n provides SOAR capability and workflows in a low-code model, as well as the ability to code for more complex workflows and integrations. It did everything that we wanted, all in one tool.
Claire Van Hinsbergh
Cyber Operations Engineering Manager, Vodafone
03 — The position

CIDAH is open source — and it will stay that way.
Because the stack underneath is open. Because our clients deserve auditability. Because giants built this ground.

What CIDAH adds is narrow and specific: a Hebrew-native professional work surface for legal services. Matter scoping. Privilege-first access. Deadline primitives calibrated to Israeli civil procedure. Audit trails that hold up under Bar Association scrutiny.

We don't claim the infrastructure. We claim what we built on top of it — and we release that, too, so the next firm doesn't have to start over. The THIRD_PARTY_NOTICES file lists every license, every attribution, every dependency. Read it. That's the whole point.