How to Use the Google Pub/Sub Subscription MCP in Google ADK

Q: Can I filter tools when using Google ADK with a Google Pub/Sub Subscription?

You can use the toolnames parameter in your agent configuration. This limits the agent to only the tools you want it to use.

Q: How does the server handle message batching?

The pullmessages tool fetches available messages from the subscription. You should loop through these in your agent logic and acknowledge them individually.

Integrate Google ADK with your Google Pub/Sub Subscription to build enterprise-grade agents that act on live infrastructure.

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Connect Google Pub/Sub Subscription MCP to Google ADK

Create your Vinkius account to connect Google Pub/Sub Subscription to Google ADK and route execution through our secure gateway. The platform manages server hosting, runtime updates, and security layers. Configuration requires no manual server provisioning.

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Setup Google Pub/Sub Subscription with Google ADK

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Streamlined pulling with Google ADK

The `pull_messages` tool serves as the bridge between your cloud events and your Gemini-powered agent. It pulls messages into your context window so your agent can reason over current data. It is built for high-throughput environments where agents need to react to state changes in real time. Use it to feed your agent the latest updates from your cloud infrastructure.

Reliable acknowledgment in Google ADK

Use `acknowledge_messages` to finalize your agent's work. This step is critical because it tells Google Cloud that the message is safely processed and can be deleted. If you skip this, your agent will see the same message again. Explicitly acknowledging keeps your queue healthy and prevents duplicate work in your agent pipeline.

Native MCP Server connectivity

The server exposes two clear tools for your Google ADK agent. By utilizing the McpToolset, you keep your code focused on agent logic rather than transport protocols. It respects your existing IAM credentials. You define the access scope, and the agent performs operations based on the permissions you explicitly grant to the service account.

Setup guide

Set up Google Pub/Sub Subscription 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 Google Pub/Sub Subscription 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="Google Pub/Sub Subscription_agent",
    model="gemini-2.0-flash",
    instruction="You have access to Google Pub/Sub Subscription 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 Google Pub/Sub Subscription. 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 Google Pub/Sub Subscription MCP in Google ADK

You use the McpToolset class with your server URL. This connects your agent to the MCP Server and maps the available tools to your LLM.

You can use the tool_names parameter in your agent configuration. This limits the agent to only the tools you want it to use.

Absolutely. Since it runs inside the Google Cloud ecosystem, you can share IAM roles between your agent and your messaging topics.

The `pull_messages` tool fetches available messages from the subscription. You should loop through these in your agent logic and acknowledge them individually.

The server operates exclusively on message content and metadata. No persistent storage exists on the MCP server, ensuring your data remains within your controlled environment.

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