Isaacus

Blackstone GraphComing soon

A living, international legal knowledge graph with an open schema, built for humans and agents alike

Overview

A world model for law.

The Blackstone Graph is a living knowledge graph of laws, regulations, cases, people, companies, locations, and other legal and real-world entities — spanning every major civil and common law jurisdiction through the open Blackstone Graph Schema.

Built different

Open, international, agent-first

Blackstone has no analogs — designed from day one for agents, jurisdictions everywhere, and open standards.

  • 400+

    data sources indexed (and counting)

  • 50+

    entity types in the Blackstone Graph Schema

  • API + MCP

    at release — interface-agnostic by design

  • Agent-facing delivery

    At release, the Blackstone Graph will support direct API access and MCP. Instead of querying a search box, agents can make API requests, speak to MCP servers, and grep file systems.

  • International coverage

    We’ve indexed over 400 data sources across the US, UK, Canada, Australia, New Zealand, Ireland, Singapore, and EU — standardized to minimize loss of valuable distinctions.

  • Interoperable standards

    Blackstone and its schema will be interoperable with popular legal ontologies and formats, including Akoma Ntoso (AKN), FOLIO, and the Legal Matter Specification Standard (LMSS).

Learn more

Inside the Blackstone Graph

The schema behind the graph, and how to get early access.

  • The Blackstone Graph Schema

    An open, information-rich knowledge model — rigorous enough for agents, flexible enough for every legal system.

    The Blackstone Graph Schema (BGS) defines how entities connect across the graph. It currently spans 50+ entity types, 40 taxonomies, and 150 relationships — from linking courts to the jurisdictions they serve, through proceedings and decisions, to tracking how individual statutory sections evolve across amendments and translations.

    Unlike prior attempts at modeling law, Blackstone treats people, places, and instruments as the atoms of law, not norms alone. Law is a process that operates on the world; the graph models that world structurally and leaves normative interpretation to lawyers and agents.

    BGS will be released under a commercially permissive open-source license. Common, civil, mixed, and tribal legal systems are all first-class — standardized where it aids retrieval, precise where jurisdictional distinctions matter.

  • Join us at the frontier

    We expect to release the Blackstone Graph through the Isaacus Beta Program in the coming months.

    If you’re a legal tech builder or represent an enterprise, government, or startup and would like to join us in pushing the frontier in legal AI, you’re welcome to apply to the program.

    Beta partners get early access to the graph in raw form ahead of its wider release — including the Isaacus Research platform, which will put the full stack in front of end users for the first time.