The agent

One agent for the agency’s hardest work.

Fifteen centuries ago, Emperor Justinian organized Roman law into a single coherent code. Today, Justinian is Vulcan’s smartest AI agent for government and legal work: it builds secure applications, researches across 157 billion legal records, and investigates and audits complex financials, every answer reasoned from primary sources and cited.

Secure app building

Builds and deploys real software.

Justinian securely builds and deploys applications, dashboards, and internal tools inside the agency boundary. Ask for the tool your team needs, and it ships where your team already works: our platform, email, and Slack.

  • Applications, dashboards, and internal tools.
  • Built and deployed inside the agency boundary.
  • Behind your SSO, on your identity and roles.
  • Runs recurring briefings and trackers on the data you watch.
See it build in a demo

Legal research

Every answer cited to the source it read.

Justinian answers legal, policy, and regulatory questions with citations back to the primary sources it read, and drafts the memos, rules, comment responses, redlines, and reports your team can verify line by line.

Records of American law and policy
157 billion
Jurisdictions
51
Court records
13.125 billion
See the full corpus

Security

FedRAMP Ready. GovCloud deployed.

Justinian runs entirely in AWS GovCloud (US), architected to the FedRAMP Rev. 5 baseline, so federal and state agencies can adopt it as government AI infrastructure.

FedRAMP
Designated FedRAMP Ready and listed on the FedRAMP Marketplace, architected to the Rev. 5 baseline and independently assessed by a 3PAO.
AWS GovCloud (US)
Agency data is stored and processed entirely inside the GovCloud boundary, in us-gov-east-1. Nothing leaves it.
Identity
Okta SAML SSO with MFA, role-based least privilege, and centralized identity across every account in the boundary.
Accountability
Humans approve sensitive actions, every step lands in an audit trail, and your data is never used to train AI models.
Read the security architecture

Latest release

Justinian 2.3.0

August 2026

Agent augmented teams.

Read the 2.3.0 notes

Justinian, answered

What is Justinian?

Justinian is a legal AI agent built by Vulcan Technologies. It plans research, reads primary law, drafts work product, and verifies every claim against source. Justinian runs on 157 billion records across American law and policy: federal regulations, state statutes, municipal codes, 13.125 billion court records, and active legislative sessions.

What data does Justinian AI run on?

Justinian runs on the largest legal and policy database in the world: 157 billion records spanning primary law, court records, every municipal code, public finance, health, environment, energy, labor, education, transportation, agriculture, disclosures, and state operational data. The full catalog is published on the coverage page.

Who uses Justinian?

Law firms, in-house legal departments, policy and compliance teams, and government agencies use Justinian for research, drafting, citation checks, and regulatory analysis. Current law students get free access.

Is Justinian available to government agencies?

Yes. Vulcan is FedRAMP Ready and listed on the FedRAMP Marketplace. Justinian runs entirely in AWS GovCloud (US), architected to the FedRAMP Rev. 5 baseline and independently assessed by a 3PAO, so federal and state agencies can adopt it as government AI infrastructure.

How is Justinian different from general-purpose AI chatbots?

Justinian is a legal AI agent, not a chatbot. It plans the research path before drafting, follows the citation graph across statutes, regulations, and precedent, and attaches the source trail to every claim so reviewers can verify the work instead of trusting a black-box summary.

Where can I use Justinian?

Justinian is available on the web, as macOS and Windows desktop apps, inside Slack, and by email at justinian@vulcan.app for account holders.

Demo request

Bring a real matter: a rule in flight, a statute your counsel is wrestling with, a docket you have to track.

Live Justinian workflow against the full legal corpus.
Citations back to primary sources on every answer.
Security, deployment, and team rollout discussion.

This page’s interactive features did not load. Reloading usually fixes it. You can email sales@vulcan.ai for demos or support@vulcan.ai for help, and download Justinian for macOS or Windows directly.