How do I find my CourtListener API Key?

Log in to your [**CourtListener account**](https://www.courtlistener.com/profile/api/), and you will find your API Key under the **API Tokens** section. Copy and paste it below.

Can the agent search for both opinions and dockets?

Yes. Use the `search_opinions` tool for legal judgments and `search_dockets` for case records. Your agent will return matching results from the Free Law Project database.

Is it possible to list judicial citations via the agent?

Yes. The `list_citations` tool allows your agent to retrieve all precedents and subsequent citations for any opinion by providing its Opinion ID, helping you map the legal landscape.

CourtListener MCP Server for Google ADK 10 tools — connect in under 2 minutes

Name: CourtListener
Availability: InStock
Author: Vinkius

google.github.io/adk-docs/tools/mcp-tools

Built by Vinkius GDPR 10 Tools SDK

Google Agent Development Kit (ADK) is Google's framework for building production AI agents. Add CourtListener as an MCP tool provider through Vinkius and your ADK agents can call every tool with full schema introspection.

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

from google.adk.agents import Agent
from google.adk.tools.mcp_tool import McpToolset
from google.adk.tools.mcp_tool.mcp_session_manager import (
    StreamableHTTPConnectionParams,
)

# Your Vinkius token. get it at cloud.vinkius.com
mcp_tools = McpToolset(
    connection_params=StreamableHTTPConnectionParams(
        url="https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp",
    )
)

agent = Agent(
    model="gemini-2.5-pro",
    name="courtlistener_agent",
    instruction=(
        "You help users interact with CourtListener "
        "using 10 available tools."
    ),
    tools=[mcp_tools],
)

Fully ManagedVinkius Servers

60%Token savings

High SecurityEnterprise-grade

IAMAccess control

EU AI ActCompliant

DLPData protection

V8 IsolateSandboxed

Ed25519Audit chain

<40msKill switch

Stream every event to Splunk, Datadog, or your own webhook in real-time

* 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 CourtListener MCP Server

Empower your AI agent to orchestrate your entire legal research workflow with CourtListener, the world's leading free and open platform for legal data. By connecting CourtListener to your agent, you transform complex legal searches into a natural conversation. Your agent can instantly search for opinions, audit court dockets, and retrieve detailed judge information without you ever touching a technical portal. Whether you are conducting case law research or monitoring judicial activity, your agent acts as a real-time legal assistant, ensuring your research is always grounded in open and accessible data.

Google ADK natively supports CourtListener as an MCP tool provider. declare Vinkius Edge URL and the framework handles discovery, validation, and execution automatically. Combine 10 tools with Gemini's long-context reasoning for complex multi-tool workflows, with production-ready session management and evaluation built in.

What you can do

Opinion Auditing — Search for legal opinions by keyword and retrieve detailed metadata, including court name and date filed.
Docket Oversight — Query court dockets to stay on top of ongoing litigation and case filings in real-time.
Judicial Intelligence — Retrieve detailed information about judges and their financial disclosures to maintain strict control over your research context.
Citation Discovery — List citations for specific opinions to understand the legal network and precedents.
Court Governance — List all available courts and their metadata to ensure your jurisdictional research is accurate.

The CourtListener MCP Server exposes 10 tools through the Vinkius. Connect it to Google ADK 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 CourtListener to Google ADK via MCP

Follow these steps to integrate the CourtListener MCP Server with Google ADK.

Install Google ADK

Run pip install google-adk

Replace the token

Replace [YOUR_TOKEN_HERE] with your Vinkius token

Create the agent

Save the code above and integrate into your ADK workflow

Explore tools

The agent will discover 10 tools from CourtListener via MCP

Why Use Google ADK with the CourtListener MCP Server

Google ADK provides unique advantages when paired with CourtListener through the Model Context Protocol.

Google ADK natively supports MCP tool servers. declare a tool provider and the framework handles discovery, validation, and execution

Built on Gemini models, ADK provides long-context reasoning ideal for complex multi-tool workflows with CourtListener

Production-ready features like session management, evaluation, and deployment come built-in. not bolted on

Seamless integration with Google Cloud services means you can combine CourtListener tools with BigQuery, Vertex AI, and Cloud Functions

CourtListener + Google ADK Use Cases

Practical scenarios where Google ADK combined with the CourtListener MCP Server delivers measurable value.

Enterprise data agents: ADK agents query CourtListener and cross-reference results with internal databases for comprehensive analysis

Multi-modal workflows: combine CourtListener tool responses with Gemini's vision and language capabilities in a single agent

Automated compliance checks: schedule ADK agents to query CourtListener regularly and flag policy violations or configuration drift

Internal tool platforms: build self-service agent platforms where teams connect their own MCP servers including CourtListener

CourtListener MCP Tools for Google ADK (10)

These 10 tools become available when you connect CourtListener to Google ADK via MCP:

get_court

Get details for a specific court

get_judge

Get details for a specific judge

get_opinion

Get details for a specific opinion

list_citations

List citations for an opinion

list_courts

List all courts

list_financial_disclosures

List judge financial disclosures

list_judges

List judges

list_opinions

List opinions

search_dockets

Search for court dockets

search_opinions

Search for legal opinions

Example Prompts for CourtListener in Google ADK

Ready-to-use prompts you can give your Google ADK agent to start working with CourtListener immediately.

"Search for court opinions about 'copyright fair use'."

"Show me details for judge ID 1234."

"Check for dockets related to 'SpaceX' in 2024."

Troubleshooting CourtListener MCP Server with Google ADK

Common issues when connecting CourtListener to Google ADK through the Vinkius, and how to resolve them.

McpToolset not found

Update: pip install --upgrade google-adk

CourtListener + Google ADK FAQ

Common questions about integrating CourtListener MCP Server with Google ADK.

How does Google ADK connect to MCP servers?

Import the MCP toolset class and pass the server URL. ADK discovers and registers all tools automatically, making them available to your agent's tool-use loop.

Can ADK agents use multiple MCP servers?

Yes. Declare multiple MCP tool providers in your agent configuration. ADK merges all tool schemas and the agent can call tools from any server in a single turn.

Which Gemini models work best with MCP tools?

Gemini 2.0 Flash and Pro models both support function calling required for MCP tools. Flash is recommended for latency-sensitive use cases, Pro for complex reasoning.