Legal One API: cases, deadlines and publications with AI agents
Legal One is Thomson Reuters' legal management software for law firms and in-house legal departments. An API is made available to customers to connect cases, appointments and records to other systems. Access is with a credential tied to the customer's license.
What the Legal One API offers
Cases
Look up cases, parties and case updates.
Appointments and deadlines
Read and create tasks, deadlines and hearings.
Publications
Follow captured publications, depending on the module.
Contacts
Look up clients, parties and others involved.
Contracts
Look up contracts, in products with this module.
How to access the Legal One API
- With your company’s credentialsAn API credential tied to the Legal One license. The authentication type and the resources are confirmed with Thomson Reuters.
- Case information may be confidential, so control who receives it.
- Start with read-only access and enable writing later.
- Confirm limits and the test environment with the vendor.
What an iTeam agent does with the Legal One API
Publications read and distributed
The agent reads the day's publications, identifies the case and creates the task for the person responsible.
Legal team calendar
Each lawyer receives the day's deadlines and hearings in the morning.
Report for the board
The agent consolidates litigation by area and risk for the monthly meeting.
Support for internal departments
Business teams ask for the status of cases and the agent answers with what is cleared for release.
From the credential to the agent at work, with approval
Request the API credential
Through your Thomson Reuters account manager, request API access and a technical user for Legal One.
Set permissions per agent
In iTeam, the Legal One credential goes into the vault and each agent gets a closed list of actions (look up cases, create an appointment). Actions that change data require approval from a person.
Validate small, then scale
Start with one case: create a test appointment and check it in Legal One. Once the result is checked, the process takes on more volume, always with an audit trail and approval wherever there is risk.
Ready-made AI teams for this work
Questions about the Legal One API
Is the Legal One API free?
It depends on the contract with Thomson Reuters. Confirm whether API access is included in your license.
Do I need to write code to use the Legal One API with iTeam?
No. iTeam reads the Legal One API documentation and builds the calls, and the deployment team adjusts the flow with you. Your company approves and follows up.
Does the agent replace deadline control?
No. It reinforces it: it reads the sources, creates tasks and reminds the people responsible. The final check stays with the legal team.
