How to Use the CNJ (Datajud API Pública) MCP in Google ADK

Q: Can I filter tools used by CNJ (Datajud API Pública) in Google ADK?

You can use the toolnames argument in the McpToolset constructor. This allows you to restrict the agent to only the specific search tools you need.

Query Brazilian court data directly within your Google ADK pipelines on Google Cloud.

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Connect CNJ (Datajud API Pública) MCP to Google ADK

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Setup CNJ (Datajud API Pública) with Google ADK

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Direct lookups for Google ADK agents

Use `search_process_by_number` to pull case info into your agent's context. It maps the CNJ identifier to the official Datajud record. This saves your agent from searching external web portals. It integrates into your existing Google Cloud workflows seamlessly.

Advanced search capability in Google ADK

The `search_processes_advanced` tool provides direct Elasticsearch access for your Google ADK agent. You send the query, and the server returns the results for your Gemini model to process. It works best when you need to parse massive datasets stored in the registry. Your agent can then pipe this data straight into BigQuery.

Organize cases with Google ADK

Leverage `search_processes_by_class_and_organ` to narrow down results by procedural class or specific court. This tool helps your Google ADK agent filter the noise from the Datajud API. It's useful for building reports that require grouping cases by court location. The output is structured so your agent can act on it immediately.

Setup guide

Set up CNJ (Datajud API Pública) MCP in Google ADK

Prerequisites

Python 3.10+ installed
google-adk package (pip install google-adk)
Active Vinkius subscription with a valid endpoint token

1

Install Google ADK

Run pip install google-adk to install the Agent Development Kit. MCP support is included via the McpToolset class.
2

Connect via SSE transport

Use McpToolset.from_server() with SseServerParams pointing to your Vinkius endpoint. Replace [YOUR_TOKEN_HERE] with your token from cloud.vinkius.com.
3

Create an LlmAgent

Pass the returned mcp_tools list directly to LlmAgent(tools=mcp_tools). The ADK maps each MCP tool to a native Gemini function call — no manual schema definitions required.
4

Run with any Gemini model

The agent works with any Gemini model (gemini-2.0-flash, gemini-2.5-pro, etc.). Copy the full example on the right to get started with CNJ (Datajud API Pública) tools in your ADK agent.

agent.py

from google.adk.agents import LlmAgent
from google.adk.tools.mcp_tool.mcp_toolset import McpToolset
from google.adk.tools.mcp_tool.mcp_session_manager import SseServerParams

# Connect to the MCP via SSE
mcp_tools, exit_stack = await McpToolset.from_server(
    connection_params=SseServerParams(
        url="https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
    )
)

# Create your agent with auto-discovered tools
agent = LlmAgent(
    name="CNJ (Datajud API Pública)_agent",
    model="gemini-2.0-flash",
    instruction="You have access to CNJ (Datajud API Pública) tools via MCP.",
    tools=mcp_tools,
)

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Independent Platform Disclaimer: Vinkius is an independent platform and is not affiliated with, endorsed by, sponsored by, verified by, or otherwise authorized by CNJ Datajud. All third-party trademarks, logos, and brand names are the property of their respective owners. Their use on this website is strictly for informational purposes to identify service compatibility and interoperability.

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Common questions about CNJ (Datajud API Pública) MCP in Google ADK

You instantiate the McpToolset with your Vinkius server URL. Add this toolset to your LlmAgent configuration to make the judicial tools available.

Yes. Once you pass the toolset to your agent, the framework auto-registers the three available search functions for immediate use.

You can use the tool_names argument in the McpToolset constructor. This allows you to restrict the agent to only the specific search tools you need.

Yes, Google ADK supports both Stdio and HTTP transports. You can switch between them in your local dev environment as needed.

All traffic is encrypted in transit between your agent and the server. The tools only touch public judicial record metadata.

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