How to Use the Country Data Resolver MCP in Pydantic AI

Q: How do I register Country Data Resolver in Pydantic AI?

Use the MCPToolset class pointing to your Vinkius HTTP endpoint. Pass this toolset instance inside the toolsets argument when initializing your Pydantic AI Agent.

Ensure type-safe geographic lookups in Pydantic AI with this runtime-validated MCP Server.

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Connect Country Data Resolver MCP to Pydantic AI

Create your Vinkius account to connect Country Data Resolver 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 Country Data Resolver with Pydantic AI

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Type-safe country lookups in Pydantic AI

The `resolve_country` tool takes an alpha-2 code and returns structured country data that matches your Pydantic schemas. Integrating this MCP server with Pydantic AI guarantees that every returned country name, alpha-3 code, and numeric code is validated at runtime. If the server returns country data that violates your model, the Pydantic AI framework raises a validation error immediately. This prevents silent data corruption in your geographic data pipelines and keeps your database records pristine.

Strict localized lookups for global applications

The `resolve_country` tool supports localized country names in English, Portuguese, Spanish, and French. Your Pydantic AI agent queries this tool with an optional language parameter to get the exact translation needed for your application's UI. Because the output is structured, your Pydantic AI agent can safely map the translated country name directly to your frontend models. This removes the need for custom translation layers or fragile lookup tables in your codebase.

Stop agent hallucinations with this MCP Server

The `resolve_country` tool replaces probabilistic LLM guesses with deterministic ISO standard data. When your Pydantic AI agent needs to resolve a code like "BR" or "DE", it queries this MCP server instead of guessing. This ensures your agent always uses correct alpha-3 and numeric country codes. Your Pydantic AI application avoids the risk of incorrect geographic routing caused by model hallucinations.

Setup guide

Set up Country Data Resolver 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": {
        "country-data-resolver-mcp": {
            "url": "https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
        }
    }
})

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

result = await agent.run("List recent Country Data Resolver transactions")
print(result.output)

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Common questions about Country Data Resolver MCP in Pydantic AI

Use the `MCPToolset` class pointing to your Vinkius HTTP endpoint. Pass this toolset instance inside the `toolsets` argument when initializing your Pydantic AI Agent.

Yes, the toolset integration handles async execution natively. Your Pydantic AI agent can resolve multiple country codes concurrently without blocking the main Python event loop.

This server offloads the maintenance of ISO mapping tables from your codebase. Your Pydantic AI agent gets a clean, validated API interface to resolve country codes without bloating your local dependencies.

It supports English, Portuguese, Spanish, and French. You can pass the desired language code as an optional parameter to the `resolve_country` tool.

The server processes ISO codes in a secure, isolated sandbox. No query history or country names are retained on disk, keeping your transaction logs clean and secure.

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