How to Use the Certifier MCP in Google ADK

Q: How do I make my Google ADK agent issue a Certifier credential?

It's a two-step process. First, your agent calls createcredential to make a draft. Then it calls issuecredential to finalize it and get the verification URL.

Q: Can my Google ADK agent change a Certifier certificate after it's issued?

No, issued credentials are final. Your agent can use updatecredential to change a certificate's details, but only if it's still in the draft state.

Q: Is there a way for my Google ADK agent to find a specific Certifier credential?

Yes, use the searchcredentials tool. Your agent can pass a recipient's name or email to find the exact credential it needs from the list.

Q: How does the MCP integration work with Google ADK?

You just need to create an McpToolset instance with your Vinkius server URL and pass it to your agent. This single MCP server exposes all the tools needed to interact with Certifier.

Connect Google ADK to Certifier and let your Gemini-powered agent issue verifiable credentials based on your Google Cloud data.

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Connect Certifier MCP to Google ADK

Create your Vinkius account to connect Certifier 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 Certifier with Google ADK

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Issue Certificates from Agent Actions

Your ADK agent can now create and issue official credentials. It calls `create_credential` with a name, email, and template ID, which you could pull from a BigQuery table. This sets up a draft credential, ready for a final check. When you're ready to make it official, the agent uses `issue_credential`. That locks the credential, generates its unique verification link, and makes it public. Gemini's long context means your agent can manage this for thousands of recipients in a single session.

Dynamically Query Templates and Credentials

Forget static lists. Your agent can query for available certificate templates in real-time. Use `list_credential_templates` and `list_design_templates` to see everything Certifier has to offer, so your agent can pick the right one for the job. It can also run searches on existing credentials. The `search_credentials` tool lets an agent find a specific person's certificate by their name or email, pulling the details with `get_credential`. This is perfect for building internal dashboards on Google Cloud.

A Simple MCP Toolset for Google ADK

Connecting Certifier is straightforward. You instantiate an `McpToolset` with your Vinkius server URL. Google ADK handles the rest, making all of Certifier's tools available to your LlmAgent. You can even use the `tool_names` filter to expose only a subset of tools, like `issue_credential` and `send_credential`, to a specialized agent. This gives you granular control over what your agents can and can't do.

Setup guide

Set up Certifier 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 Certifier 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="Certifier_agent",
    model="gemini-2.0-flash",
    instruction="You have access to Certifier 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 Certifier. 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 Certifier MCP in Google ADK

It's a two-step process. First, your agent calls `create_credential` to make a draft. Then it calls `issue_credential` to finalize it and get the verification URL.

No, issued credentials are final. Your agent can use `update_credential` to change a certificate's details, but only if it's still in the draft state.

Yes, use the `search_credentials` tool. Your agent can pass a recipient's name or email to find the exact credential it needs from the list.

You just need to create an `McpToolset` instance with your Vinkius server URL and pass it to your agent. This single MCP server exposes all the tools needed to interact with Certifier.

Your agent only sends recipient names and emails to the server. The connection uses a Vinkius token, and the MCP server instance itself is ephemeral, meaning your data is only processed in-memory and not stored.

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