How to Use the ClearBank MCP in Pydantic AI

Q: How do I initialize ClearBank in Pydantic AI?

Install pydantic-ai-slimmcp. Create an MCPToolset with your Vinkius HTTP URL and add it to your agent's toolsets array. Do not use the deprecated MCPServerHTTP class.

Type-safe UK payment clearing for Pydantic AI agents.

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Connect ClearBank MCP to Pydantic AI

Create your Vinkius account to connect ClearBank 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 ClearBank with Pydantic AI

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Claude

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Type-safe ClearBank MCP Server

Execute massive digital-signature encrypted transaction structures natively. You connect the Vinkius MCP endpoint using MCPToolset, and the framework enforces strict runtime validation on every UK payment clearing action. If the API returns unexpected fields during a `clearbank_get_account_balances` call, the agent fails loudly. You get a clear ValidationError instead of silent data corruption or hallucinated ledger values.

Provision virtual UK accounts reliably

Spin up new banking infrastructure programmatically. Your agent calls `clearbank_create_account` and Pydantic AI guarantees the resulting account numbers match your strict schema definitions. Model-agnostic design means you can switch underlying LLMs without rewriting your payment logic. A local model can run `clearbank_suspend_account` just as effectively as Claude or GPT-4.

Send CHAPS and Faster Payments

Wire money with confidence. The agent triggers `clearbank_create_chaps_payment` during Bank of England hours or fires off a `clearbank_create_faster_payment` for instant settlement. Tracking these transfers requires exact data matching. By looping `clearbank_get_payment_status`, your system verifies the exact settlement state and logs it securely.

Setup guide

Set up ClearBank 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": {
        "clearbank-mcp": {
            "url": "https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
        }
    }
})

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

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

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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 ClearBank UK. 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 ClearBank MCP in Pydantic AI

Install pydantic-ai-slim[mcp]. Create an MCPToolset with your Vinkius HTTP URL and add it to your agent's toolsets array. Do not use the deprecated MCPServerHTTP class.

Every response from the server gets parsed through Pydantic models. If a transaction log contains a malformed date or missing amount, the framework throws an error immediately.

Yes. The framework is completely model-agnostic. You can route UK Faster Payments using an open-source model running on your own hardware.

The validation layer catches the API error and prevents the agent from hallucinating a successful settlement. Your code handles the exact failure state safely.

You only need one Vinkius endpoint token. The actual banking credentials live inside our zero-trust ephemeral sandboxes. We never persist your virtual account numbers or payment routing details after the run completes.

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