How to Use the Corbado MCP in Pydantic AI

Q: Can a Pydantic AI agent handle Corbado passkey appending?

Yes, the agent calls startpasskeyappend to begin adding a passkey to an existing account. It then validates and completes the process using finishpasskeyappend.

Q: How does Corbado ensure type safety with Pydantic AI?

Every tool response, including data from listusers and getjwks, is parsed against Pydantic schemas. This guarantees that your agent only processes valid, structured JSON payloads.

Q: What tool does the agent use to verify signatures?

The agent uses verifysigneddata to validate passkey signatures. This checks the cryptographic integrity of the biometric assertion before granting access.

Build type-safe passkey authentication flows using Corbado validated at runtime by your Pydantic AI agent via MCP.

See Vinkius in Action

Works with every AI agent you already use

…and any MCP-compatible client

MCP Servers - Free for Subscribers

Connect Corbado MCP to Pydantic AI

Create your Vinkius account to connect Corbado 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.

GDPR Free for Subscribers

Setup Corbado with Pydantic AI

Ask AI about this MCP

ChatGPT

Claude

Perplexity

Type-safe user management in Pydantic AI

The Corbado MCP Server delivers structured identity data that your Pydantic AI agent validates against strict Python models. Tools like `get_user` and `create_user` return typed schemas, preventing silent failures in your auth pipelines. If the identity API returns a modified payload, the agent catches the schema mismatch instantly. This ensures that user records created via `create_user` always conform to your database constraints.

Secure passkey flows with runtime validation

This server provides reliable passkey initialization using `init_signup` and `start_passkey_login` tools. Your agent validates every step of the cryptographic challenge generation before passing it to the frontend. The agent processes the signed biometric assertions using `finish_passkey_login`. Because the inputs are validated by Pydantic, you avoid malformed payload errors during authentication.

Identifier and session schema verification

Your agent monitors active sessions and identifiers using `list_sessions` and `list_identifiers`. Every returned session object is parsed and validated, ensuring your agent never acts on corrupted state data. When updating user keys, the agent calls `update_identifier` and checks the response. It relies on `get_me` to verify the current session's validity with absolute type safety.

Setup guide

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

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

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

Get your connection token →

Independent Platform Disclaimer: Vinkius is an independent platform and is not affiliated with, endorsed by, sponsored by, verified by, or otherwise authorized by Corbado. 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.

Why Choose Vinkius

Vinkius connects your tools to AI with real-time monitoring and automatic cost savings — all from one dashboard.

Connect Corbado now

Real-time monitoring

Live

visibility into every interaction

Connect your favorite tools to your AI and see exactly what's happening — every request, every response, in real time.

Built-in savings

60%

lower AI costs

Vinkius compresses data between your apps and your AI automatically. Lower bills every month — no configuration required.

Single dashboard

One

place for every integration

Every tool your AI connects to, managed from a single screen. One account, complete control.

Common questions about Corbado MCP in Pydantic AI

Use the unified toolset class to connect to the server's HTTP endpoint. Pass this toolset to your agent, which auto-discovers and validates all 43 identity tools at runtime.

Yes, the agent calls `start_passkey_append` to begin adding a passkey to an existing account. It then validates and completes the process using `finish_passkey_append`.

Every tool response, including data from `list_users` and `get_jwks`, is parsed against Pydantic schemas. This guarantees that your agent only processes valid, structured JSON payloads.

The agent uses `verify_signed_data` to validate passkey signatures. This checks the cryptographic integrity of the biometric assertion before granting access.

Session tokens and user identifiers are processed transiently inside a secure V8 MCP sandbox. Vinkius does not log or persist any authentication secrets, maintaining strict compliance boundaries.

Use it with your favorite AI tools

Connect this server to Cursor, Claude, VS Code, and more.

OpenAI Agents SDK sdk-python

Google ADK sdk-python

Pydantic AI sdk-python

Vercel AI SDK sdk-typescript