How to Use the Younium MCP in Pydantic AI

Q: How do I create a new account securely with Younium using Pydantic AI?

You use createaccount. Since you're running on Pydantic AI, the agent ensures that your entire JSON configuration is correct before sending it to the server.

Q: Can I check Younium billing metrics with Pydantic AI?

Yes. The getmetrics tool pulls MRR, ARR, and TCV data, giving you validated financial snapshots that you can trust in your code logic.

Q: What tools are available for listing invoices with Younium using Pydantic AI?

You run listinvoices. This retrieves all generated bills and presents them in a structured, validated format that your agent can process without breaking.

Q: If I have an issue cancelling a subscription, what should I check first?

Check the inputs for cancelsubscription. You need to ensure you provide the correct subscription ID, version ID, and effective date. The tool itself is robust.

Handle sensitive billing actions with guaranteed type safety using Pydantic AI.

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Connect Younium MCP to Pydantic AI

Create your Vinkius account to connect Younium to Pydantic AI 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 Younium with Pydantic AI

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Validate and Retrieve Account Data

Use `get_account` to pull detailed Younium account records. Because you're working with Pydantic AI, you know the returned data structure will be perfectly validated. If you need a list of all customer accounts, run `list_accounts`. The agent validates every field before it hands off results.

Manage Subscription Lifecycle

Creating or updating subscriptions is handled by `create_subscription`, which accepts a fully typed JSON object. This prevents unexpected API errors. If an account needs to change its plan, you use `cancel_subscription` alongside the required IDs and effective date.

Audit Billing Reports and Products

The agent pulls financial reports by calling `get_metrics`, giving you MRR, ARR, and TCV metrics. It's a clean read that your type system trusts. Need to see what services are available? Use `list_products` to pull the full catalog list.

Setup guide

Set up Younium MCP in Pydantic AI

Prerequisites

Python 3.10+ installed
pydantic-ai-slim[fastmcp] package
Active Vinkius subscription with a valid endpoint token

1

Install Pydantic AI with FastMCP
Run pip install "pydantic-ai-slim[fastmcp]". The FastMCP toolset replaces the deprecated MCPServerHTTP class with full protocol support.
2

Configure the FastMCPToolset
Pass a JSON-style config dict to FastMCPToolset with your Vinkius URL. Replace [YOUR_TOKEN_HERE] with your token from cloud.vinkius.com. Supports Streamable HTTP, SSE, and Stdio transports.
3

Create and run your agent
Pass the toolset to Agent(toolsets=[toolset]) and call agent.run(). Swap openai:gpt-4o for any supported model — Anthropic, Google, Mistral, or Groq.

agent.py

from pydantic_ai import Agent
from pydantic_ai.toolsets.fastmcp import FastMCPToolset

toolset = FastMCPToolset({
    "mcpServers": {
        "younium-mcp": {
            "url": "https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
        }
    }
})

agent = Agent(
    "openai:gpt-4o",
    toolsets=[toolset],
    system_prompt="You have access to Younium tools.",
)

result = await agent.run("List recent Younium transactions")
print(result.output)

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Common questions about Younium MCP in Pydantic AI

You use `create_account`. Since you're running on Pydantic AI, the agent ensures that your entire JSON configuration is correct before sending it to the server.

Yes. The `get_metrics` tool pulls MRR, ARR, and TCV data, giving you validated financial snapshots that you can trust in your code logic.

You run `list_invoices`. This retrieves all generated bills and presents them in a structured, validated format that your agent can process without breaking.

Check the inputs for `cancel_subscription`. You need to ensure you provide the correct subscription ID, version ID, and effective date. The tool itself is robust.

This server handles critical billing records: Account configurations, Subscription details, and Invoice histories. Data integrity here is paramount.

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