What features of LEAP Legal are available through this API?

The API provides access to: Matters/Cases (CRUD operations), Contacts/Clients (create and list), Time Entries (list and create), Bills/Invoices (list and get), Payments (list), Tasks (list), Documents (list by matter), Calendar Events (list), and Custom Fields (list schemas). You can search matters by keyword, filter by status and practice area, and view all matters for a specific client.

How do I get a LEAP Legal API access token?

Visit the LEAP Developer Console at developer.leap.build and register your application. Use OAuth 2 authentication to obtain an access token. The token is used as a Bearer token in the Authorization header for all API requests. Contact LEAP support if you need help setting up API access for your firm.

Can I create new matters and contacts through the API?

Yes! You can create new matters with name, client assignment, status, and practice area. You can also create new contacts with first name, last name, email, phone, and contact type (Client, Opposing Party, Witness, etc.). Use `create_leap_matter` and `create_leap_contact` tools for these operations.

How do I track billable time with LEAP Legal API?

Use `create_leap_time_entry` to log time against any matter. Provide the matter ID, description of work, and duration in minutes. You can specify whether the entry is billable and set a custom hourly rate. Use `list_leap_time_entries` to view all time logged against a specific matter or across all matters.

LEAP Legal MCP Server for LangChain 18 tools — connect in under 2 minutes

Name: LEAP Legal
Availability: InStock
Author: Vinkius

python.langchain.com/docs/integrations/tools/mcp

Built by Vinkius GDPR 18 Tools Framework

LangChain is the leading Python framework for composable LLM applications. Connect LEAP Legal through Vinkius and LangChain agents can call every tool natively. combine them with retrievers, memory, and output parsers for sophisticated AI pipelines.

Get MCP Server for AI Agents

ASK AI ABOUT THIS MCP SERVER

Open in ChatGPT Open in Claude Open in Perplexity

Vinkius supports streamable HTTP and SSE.

python

import asyncio
from langchain_mcp_adapters.client import MultiServerMCPClient
from langchain_openai import ChatOpenAI
from langgraph.prebuilt import create_react_agent

async def main():
    # Your Vinkius token. get it at cloud.vinkius.com
    async with MultiServerMCPClient({
        "leap-legal": {
            "transport": "streamable_http",
            "url": "https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp",
        }
    }) as client:
        tools = client.get_tools()
        agent = create_react_agent(
            ChatOpenAI(model="gpt-4o"),
            tools,
        )
        response = await agent.ainvoke({
            "messages": [{
                "role": "user",
                "content": "Using LEAP Legal, show me what tools are available.",
            }]
        })
        print(response["messages"][-1].content)

asyncio.run(main())

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* Every MCP server runs on Vinkius-managed infrastructure inside AWS - a purpose-built runtime with per-request V8 isolates, Ed25519 signed audit chains, and sub-40ms cold starts optimized for native MCP execution. See our infrastructure

About LEAP Legal MCP Server

Connect to LEAP Legal Software platform and manage your entire law practice from any AI agent. Access matters, contacts, documents, time entries, calendar events, bills, payments, and tasks—all through a unified REST API.

LangChain's ecosystem of 500+ components combines seamlessly with LEAP Legal through native MCP adapters. Connect 18 tools via Vinkius and use ReAct agents, Plan-and-Execute strategies, or custom agent architectures. with LangSmith tracing giving full visibility into every tool call, latency, and token cost.

What you can do

Matters/Cases — List, search, create, and update legal matters with status, client, and practice area
Contacts/Clients — Manage your client database including individuals, organizations, and opposing parties
Client Portfolio — View all matters associated with a specific client
Time Tracking — Log billable and non-billable time entries against any matter
Bills/Invoices — List and review bills with amounts, status, and line items
Payments — Track payments received from clients
Tasks — View and manage tasks associated with matters and contacts
Documents — Access matter documents, filings, correspondence, and evidence
Calendar — View court dates, hearings, deadlines, and meetings
Custom Fields — Access custom field schemas configured for matters

The LEAP Legal MCP Server exposes 18 tools through the Vinkius. Connect it to LangChain in under two minutes — no API keys to rotate, no infrastructure to provision, no vendor lock-in. Your configuration, your data, your control.

How to Connect LEAP Legal to LangChain via MCP

Follow these steps to integrate the LEAP Legal MCP Server with LangChain.

Install dependencies

Run pip install langchain langchain-mcp-adapters langgraph langchain-openai

Replace the token

Replace [YOUR_TOKEN_HERE] with your Vinkius token

Run the agent

Save the code and run python agent.py

Explore tools

The agent discovers 18 tools from LEAP Legal via MCP

Why Use LangChain with the LEAP Legal MCP Server

LangChain provides unique advantages when paired with LEAP Legal through the Model Context Protocol.

The largest ecosystem of integrations, chains, and agents. combine LEAP Legal MCP tools with 500+ LangChain components

Agent architecture supports ReAct, Plan-and-Execute, and custom strategies with full MCP tool access at every step

LangSmith tracing gives you complete visibility into tool calls, latencies, and token usage for production debugging

Memory and conversation persistence let agents maintain context across LEAP Legal queries for multi-turn workflows

LEAP Legal + LangChain Use Cases

Practical scenarios where LangChain combined with the LEAP Legal MCP Server delivers measurable value.

RAG with live data: combine LEAP Legal tool results with vector store retrievals for answers grounded in both real-time and historical data

Autonomous research agents: LangChain agents query LEAP Legal, synthesize findings, and generate comprehensive research reports

Multi-tool orchestration: chain LEAP Legal tools with web scrapers, databases, and calculators in a single agent run

Production monitoring: use LangSmith to trace every LEAP Legal tool call, measure latency, and optimize your agent's performance

LEAP Legal MCP Tools for LangChain (18)

These 18 tools become available when you connect LEAP Legal to LangChain via MCP:

create_leap_contact

USE WHEN: - User wants to add a new client - User needs to create a new contact record - User asks to "add a new client" or "create a contact" PARAMETERS: - first_name (REQUIRED): Client's first name - last_name (REQUIRED): Client's last name - email (OPTIONAL): Client's email address - phone (OPTIONAL): Client's phone number - type (OPTIONAL): Contact type — "Client" (default), "Opposing Party", "Witness", "Other" EXAMPLES: - "Add a new client John Smith" → call with first_name="John", last_name="Smith" - "Create contact for opposing party Jane Doe, jane@example.com" → call with first_name="Jane", last_name="Doe", email="jane@example.com", type="Opposing Party" Create a new contact/client in LEAP Legal

create_leap_matter

USE WHEN: - User wants to open a new legal case - User needs to create a new matter for a client - User asks to "create a new case" or "open a matter" PARAMETERS: - name (REQUIRED): Matter/case name - contact_id (OPTIONAL): ID of the client/contact this matter belongs to - status (OPTIONAL): Initial status — "Open" (default), "Closed", "Pending" - practice_area (OPTIONAL): Practice area (e.g. "Family Law", "Criminal Defense") - description (OPTIONAL): Matter description/notes EXAMPLES: - "Create a new matter called 'Smith Divorce'" → call with name="Smith Divorce" - "Open a new criminal defense matter for client 456" → call with name="State v. Johnson", contact_id="456", practice_area="Criminal Defense" Create a new matter/case in LEAP Legal

create_leap_time_entry

USE WHEN: - User wants to log time spent on a matter - User needs to record billable hours - User asks to "add time entry" or "log hours" PARAMETERS: - matter_id (REQUIRED): Matter/case ID this time entry belongs to - description (REQUIRED): Description of the work performed - duration_minutes (REQUIRED): Duration in minutes - billable (OPTIONAL): Whether this is billable — true (default) or false - rate (OPTIONAL): Hourly rate for this entry EXAMPLES: - "Log 2 hours of legal research for matter 123" → call with matter_id="123", description="Legal research", duration_minutes=120 - "Add 30 minute phone call with client" → call with matter_id="123", description="Phone call with client", duration_minutes=30 Create a new time entry for billing

get_client_leap_matters

Useful for understanding a client's full legal portfolio. Get all matters/cases for a specific client/contact

get_leap_bill

Get detailed information for a specific bill/invoice

get_leap_contact

Get detailed information for a specific contact/client

get_leap_matter

Get detailed information for a specific matter/case

list_leap_bills

List bills/invoices in LEAP Legal

list_leap_calendar_events

List calendar events in LEAP Legal

list_leap_contacts

USE WHEN: - User wants to see all their clients and contacts - User needs to find a client by name or email - User is exploring their contact database - User asks "list my clients" or "show all contacts" PARAMETERS: - page (OPTIONAL): Page number for pagination - page_size (OPTIONAL): Results per page (default: 25, max: 100) EXAMPLES: - "List all my clients" → call with no params - "Show my contacts" → call with no params - "List contacts page 2" → call with page="2" List all contacts/clients in LEAP Legal

list_leap_custom_fields

List custom field schemas in LEAP Legal

list_leap_documents

List documents for a specific matter

list_leap_matters

Supports filtering by status, client, practice area, and date range for flexible queries. USE WHEN: - User wants to see all their legal matters/cases - User needs to find matters by status, client, or practice area - User is exploring their law firm's caseload - User asks "what matters do I have" or "list my open cases" PARAMETERS: - status (OPTIONAL): Filter by matter status (e.g. "Open", "Closed", "Pending") - practice_area (OPTIONAL): Filter by practice area (e.g. "Family Law", "Criminal Defense") - contact_id (OPTIONAL): Filter by specific client/contact ID - page (OPTIONAL): Page number for pagination - page_size (OPTIONAL): Results per page (default: 25, max: 100) EXAMPLES: - "List all my open matters" → call with status="Open" - "Show my family law matters" → call with practice_area="Family Law" - "List all matters" → call with no params List all matters/cases in LEAP Legal Software

list_leap_payments

List payments received in LEAP Legal

list_leap_tasks

List tasks in LEAP Legal

list_leap_time_entries

Supports filtering by matter, user, and date range. USE WHEN: - User wants to see all logged time entries - User needs to review billable hours for a matter - User is preparing invoices or reviewing time reports - User asks "show my time entries" or "list billable hours" PARAMETERS: - matter_id (OPTIONAL): Filter by specific matter ID - date_from (OPTIONAL): Start date filter (YYYY-MM-DD) - date_to (OPTIONAL): End date filter (YYYY-MM-DD) - page (OPTIONAL): Page number for pagination - page_size (OPTIONAL): Results per page (default: 25, max: 100) EXAMPLES: - "List all time entries" → call with no params - "Show time entries for matter 123" → call with matter_id="123" - "List time entries from April 1-7" → call with date_from="2026-04-01", date_to="2026-04-07" List time entries in LEAP Legal

search_leap_matters

Search matters/cases by keyword query

update_leap_matter

Update an existing matter/case in LEAP Legal

Example Prompts for LEAP Legal in LangChain

Ready-to-use prompts you can give your LangChain agent to start working with LEAP Legal immediately.

"List all my open matters in LEAP Legal."

"Create a new time entry for 2 hours of legal research on the Smith Divorce matter."

"Show me all contacts for client John Smith."

Troubleshooting LEAP Legal MCP Server with LangChain

Common issues when connecting LEAP Legal to LangChain through the Vinkius, and how to resolve them.

MultiServerMCPClient not found

Install: pip install langchain-mcp-adapters

LEAP Legal + LangChain FAQ

Common questions about integrating LEAP Legal MCP Server with LangChain.

How does LangChain connect to MCP servers?

Use langchain-mcp-adapters to create an MCP client. LangChain discovers all tools and wraps them as native LangChain tools compatible with any agent type.

Which LangChain agent types work with MCP?

All agent types including ReAct, OpenAI Functions, and custom agents work with MCP tools. The tools appear as standard LangChain tools after the adapter wraps them.