How to Use the Hanko (Passkey Auth) MCP in OpenAI Agents SDK

Q: Can OpenAI Agents SDK handle passkey registration failures?

Yes. Your agent receives the error response directly from passkeyregistrationfinalize when a registration attempt fails. You can build custom logic to retry or alert the user.

Q: How are sessions verified?

You use publicvalidatesession to check JWTs against the public keys retrieved via publicgetjwks. This confirms the token remains authentic.

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Connect Hanko (Passkey Auth) MCP to OpenAI Agents SDK

Create your Vinkius account to connect Hanko (Passkey Auth) to OpenAI Agents SDK 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 Hanko (Passkey Auth) with OpenAI Agents SDK

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Automate user registration with OpenAI Agents SDK

Your agent initializes the registration flow by calling `passkey_registration_init` to generate the correct public key options. This keeps the browser-side credential creation logic strictly tied to the server's requirements. Once the client provides the response, your agent triggers `passkey_registration_finalize` to write the new user identity. This removes the need for manual database entries or insecure password handling.

Manage user sessions using OpenAI Agents SDK

Validate active user sessions instantly by passing tokens into `public_validate_session`. Your agent checks the validity of every request before allowing access to internal system resources. When a session expires or a user logs out, you can verify the remaining credentials with `passkey_list_credentials`. This ensures your agent always operates with the current state of authorized users.

Handle secure transactions via OpenAI Agents SDK

Perform high-stakes actions by using `passkey_transaction_init` to start a signed request flow. This adds an extra layer of verification for sensitive operations that require explicit user consent. Finalize the request with `passkey_transaction_finalize` to confirm the signature. Your agent maintains a clean audit trail without ever touching a user password.

Setup guide

Set up Hanko (Passkey Auth) MCP in OpenAI Agents SDK

Prerequisites

Python 3.10+ installed
openai-agents package (pip install openai-agents)
Active Vinkius subscription with a valid endpoint token

1

Install the SDK

Run pip install openai-agents to install the OpenAI Agents SDK. The MCP integration is built-in — no extra dependencies needed.
2

Connect via SSE transport

Use MCPServerSse with your Vinkius endpoint URL. Replace [YOUR_TOKEN_HERE] with your token from cloud.vinkius.com. The SDK auto-discovers all Hanko (Passkey Auth) tools at runtime.
3

Create your Agent

Pass the MCP to Agent(mcp_servers=[server]). The agent receives Hanko (Passkey Auth) tools as native definitions — JSON schemas resolve automatically.
4

Run the agent

Call Runner.run(agent, prompt) to execute. The agent invokes the appropriate Hanko (Passkey Auth) tools and returns structured results. Copy the full example on the right to get started.

agent.py

import asyncio
from agents import Agent, Runner
from agents.mcp import MCPServerSse

async def main():
    async with MCPServerSse(
        url="https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
    ) as server:
        agent = Agent(
            name="Hanko (Passkey Auth) Agent",
            instructions="You have access to Hanko (Passkey Auth) tools.",
            mcp_servers=[server],
        )
        result = await Runner.run(agent, "List recent transactions")
        print(result.final_output)

asyncio.run(main())

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Common questions about Hanko (Passkey Auth) MCP in OpenAI Agents SDK

Install the server via the Vinkius platform and pass the endpoint to your agent constructor. The SDK automatically discovers all available tools for your use.

Yes. Your agent receives the error response directly from `passkey_registration_finalize` when a registration attempt fails. You can build custom logic to retry or alert the user.

It relies on WebAuthn standards, which are far more resistant to phishing than passwords. You get cryptographic verification for every session.

The server manages WebAuthn public keys and session metadata. It does not store plaintext passwords or private keys.

You use `public_validate_session` to check JWTs against the public keys retrieved via `public_get_jwks`. This confirms the token remains authentic.

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OpenAI Agents SDK sdk-python