How to Use the Courier MCP in Google ADK

Q: Can Google ADK agents filter Courier tools?

You can use the toolnames filter within your McpToolset configuration. This limits the agent to only the specific messaging capabilities you want to expose.

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Connect Courier MCP to Google ADK

Create your Vinkius account to connect Courier 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 Courier with Google ADK

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Segment audiences in Google ADK

Call `list_audiences` to retrieve filter criteria and audience IDs for your targeted campaigns. Your agent uses this data to decide who receives specific notifications. It connects your BigQuery data directly to the messaging layer. You spend less time mapping IDs and more time running segments.

Standardize branding with MCP Server

The `list_brands` tool provides your agent with the correct logo settings and color configurations for white-labeling. It ensures consistency across your communication stack. Your agent automatically applies these brand settings to any outgoing notification. You keep your visual identity clean without hardcoding values.

Retrieve user data for Google ADK workflows

Use `list_users` to pull roles and account associations into your Google ADK logic. This gives your agent the context needed to personalize messages for specific users. It turns your agent into a smart messaging hub. You get the right user details at the right time for every message sent.

Setup guide

Set up Courier 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 Courier 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="Courier_agent",
    model="gemini-2.0-flash",
    instruction="You have access to Courier tools via MCP.",
    tools=mcp_tools,
)

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Common questions about Courier MCP in Google ADK

You can use the tool_names filter within your McpToolset configuration. This limits the agent to only the specific messaging capabilities you want to expose.

The server connects via Streamable HTTP or Stdio transports. You pass the toolset into the LlmAgent constructor to give it direct access to Courier operations.

Yes, your agent can process vast amounts of message history retrieved from Courier. The Gemini models handle the data volume with ease.

Only the tools exposed by the server are accessible. You define the scope, ensuring your agent only interacts with the messaging tools you authorize.

Access to email and phone records is restricted to your authenticated agent session. The data stays encrypted in transit and is never stored by the underlying infrastructure.

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