Descrybe is a verifiable legal research platform built for anyone whose work depends on the law. It comes in two forms: the Descrybe Platform, a full research workspace with guided research (DescrybeLM), brief checking, and the Legal Research Toolkit; and the Descrybe Legal Engine, which equips Claude with the same primary-law foundation. Both are built on the same structured primary-law corpus.
The Descrybe Platform is the full research workspace at descrybe.com. It includes DescrybeLM (a guided research engine that builds verified, citation-backed answers from primary law), brief checking, the Legal Research Toolkit for direct search and citation analysis, saved sessions, and Word export. The Platform subscription also includes the Descrybe Legal Engine for Claude.
The Descrybe Platform is the full research workspace at descrybe.com. It gives you two ways to work with primary law.
DescrybeLM is the guided research engine. It asks clarifying questions, builds a research plan, and returns a verified legal analysis grounded in primary law.
The Legal Research Toolkit is for direct search and analysis. It includes:
- Citator tools: The Cytator™ shows citing case treatments at both the case level and the legal issue level. The Cytationator™ checks every citation in a brief or document, identifies invalid citations, and analyzes the treatment of every case cited. The Backward Cytator™ shows how an opinion treated the cases it cited at the time it was written.
- Search tools: Natural language search lets you search by case facts, legal concepts, or legal terms. Keyword search indexes every word in every case in the corpus for exact-term retrieval. Case name search finds cases by party name as you type, and citation search lets you look up cases by citation.
- Analysis tools: The Legal Issue Explorer lets you explore more than 6.5 million legal issues and instantly see which cases addressed them and how. The Similar Case Browser shows how different cases addressed the same legal issues across jurisdictions. Enhanced Case Details gives you case facts, key authorities, and important metadata instantly. Legal Issue Details shows you the legal standards and frameworks applied, governing authorities, and how the judge addressed each issue.
The Platform also includes brief checking, saved sessions, and Word export. The Platform subscription includes the Descrybe Legal Engine for Claude at no additional cost.
The Descrybe Legal Engine is Descrybe's legal research layer for Claude. Connect it once and Claude can ground its answers in U.S. primary law using Descrybe's 13 research tools, including primary-law search, the Cytator™, citation resolution, and quote verification. The Engine works in Claude.ai, Cowork, and Claude Desktop. It's built on the same structured primary-law corpus that powers the Descrybe Platform.
No AI system is perfect, and we won't claim otherwise. What we can say is that both Descrybe products are designed to minimize the risk of unreliable output.
DescrybeLM (in the Descrybe Platform) reasons from Descrybe's own structured primary-law corpus rather than generating answers from memory. It verifies every citation it returns, shows its reasoning so you can inspect it, and tells you when it's uncertain rather than guessing.
The Descrybe Legal Engine grounds Claude's answers in the same corpus. Every citation Claude returns through Descrybe is matched against actual judicial opinions, every quote is verified against its source, and every research step is visible. The Engine doesn't replace Claude's reasoning. It makes sure that reasoning works from real law, not model memory.
We publish our methodology and benchmark results so you can evaluate the evidence yourself.
No. Descrybe is a purpose-built legal research system, engineered for legal reliability. We built our own structured primary-law corpus, our retrieval and citation logic, and our patent-pending orchestration. The foundation model is one component, used by DescrybeLM on the Platform and by Claude through the Engine. The result is a system architected specifically for legal analysis, not a repackaged general model.
No. We're not training a foundation model from scratch. Foundation models are one component of the Descrybe system, used by DescrybeLM on the Platform and by Claude through the Engine. Everything else is ours: the corpus, the retrieval, the citation logic, the orchestration.
A helpful analogy is Cursor: it built an AI-native programming environment on top of Microsoft's Visual Studio Code. The base layer exists, but the product experience is fundamentally different.
The Cytator™ shows you how every case has been treated by later courts, at both the case level and the legal issue level. So you can see not just whether a case is still good law, but whether the specific issue you're researching has been affirmed, limited, or overturned. The Cytator™ runs in both the Descrybe Platform and the Descrybe Legal Engine for Claude. Cytator™ treatment data is available for cases in the corpus. As with any citator, we recommend confirming case status and reviewing the original opinion before relying on any authority.
Coverage varies by court, some publish opinions immediately, others may delay.
Descrybe has two subscriptions.
The Descrybe Legal Engine for Claude is $25/month. It equips Claude with 13 legal research tools, including primary-law search, the Cytator™, citation resolution, and quote verification. The Engine works in Claude.ai, Cowork, and Claude Desktop.
The Descrybe Platform is $50/month. It's the full research workspace at descrybe.com, with DescrybeLM (150 uses per month, inputs up to 64,000 characters per run), the full Legal Research Toolkit (including the Cytator™, Cytationator™, and Backward Cytator™), brief checking, saved sessions, and Word export. The Platform subscription also includes the Descrybe Legal Engine for Claude.
No tiers, no feature gates, no demo required. Discounts available for annual plans. See the pricing page for details.
Yes, for both products. New subscribers get 50% off their first month with code LAUNCH50: $12.50 instead of $25 for the Descrybe Legal Engine, or $25 instead of $50 for the Descrybe Platform. Cancel anytime.
Descrybe's corpus includes all available U.S. state appellate and supreme court opinions, and all available federal district, appellate, and supreme court opinions, including U.S. bankruptcy court and other special court opinions and a growing number of statutes and regulations.
Both are part of the Descrybe Platform. The Legal Research Toolkit is for when you know what you're looking for. You search, you trace citations, you explore issues. You're driving. DescrybeLM is for when you have a question and need an answer. It asks clarifying questions, builds a research plan, and returns a verified legal analysis. You bring the facts, it does the reasoning. Most legal research benefits from both.
Yes. The Descrybe Legal Engine works in Claude, so you'll need an active Claude account. Your Descrybe subscription is separate from your Claude subscription.
Claude is built for reasoning and conversation across many domains. The Descrybe Legal Engine adds the verifiable primary-law layer that legal work depends on. With Descrybe connected, every citation in Claude's response is matched against actual judicial opinions, every quote is checked against its source, and every answer points back to the law in Descrybe's 300M-record corpus. That's what makes legal answers something you can verify, cite, and build on. Our white paper has full benchmark results.
You can cancel monthly plan renewals anytime. Log in to your account, click your profile icon, select Manage Subscription, and click cancel. Your subscription will remain active through the end of your current billing cycle and will not renew afterward. If you have both a Descrybe Platform and a Descrybe Legal Engine subscription, each is managed separately. Annual plans can be set to not renew at any time using the same process and will take effect at the end of your current term. We do not issue refunds for unused time. If a billing error occurs, please contact us and we will correct it promptly.
Descrybe's output is for reference and should support, not replace, your legal research and professional judgment. Always verify with the original opinion. See our Terms of Service for more information.
Please see our privacy policy.
Because serious legal research shouldn't be a luxury. We built Descrybe from the ground up: self-funded, engineered for efficiency, without outside investor timelines or enterprise sales overhead. That lets us price for the work, not the market. Plans start at $25/month for the Descrybe Legal Engine, and the full Descrybe Platform is $50/month with the Engine included. Either way, every feature is included.
Yes, in both products.
In the Descrybe Platform: DescrybeLM answers include a table of authorities with verified citations linked back to the primary law. You can check every source. The reasoning is visible at every step. DescrybeLM also tells you when it needs more information and flags uncertainty rather than filling gaps with guesses.
In Claude with the Descrybe Legal Engine: you can see which Descrybe tools Claude uses and read the data each tool returns as Claude builds its answer. Every citation, passage, and source link comes directly from Descrybe's primary-law corpus.
Trust is earned through transparency. That's how we've built both.
Email us at [email protected], submit a support ticket from the platform, or call us at 617-752-2020. We'll get back to you shortly.
Descrybe is built on its own independently structured primary-law corpus of more than 300 million records. We sourced and built it ourselves, with documented provenance for every piece. Judicial opinions, statutes, and regulations all came in through known, legitimate channels and proper licensing.
That matters in legal AI more than most places. A corpus assembled from third-party shortcuts, scraped sources, or unclear chains of custody can produce confident-sounding answers that don't hold up under scrutiny. Ours is built to hold up.