Bring Authentication
to Cursor
Learn how to connect Hanko (Passkey Auth) to Cursor and start using 15 AI agent tools in minutes. Fully managed, enterprise secure, and ready to use without writing a single line of code.
GDPR Free for SubscribersCompatible with every major AI agent and IDE
Gemini
What is the Hanko (Passkey Auth) MCP Server?
Connect your Hanko instance to any AI agent to streamline passkey-based authentication and user management. This server provides a comprehensive interface for WebAuthn flows and administrative user operations.
What you can do
- Passkey Lifecycle — Initialize and finalize WebAuthn registration and login flows for secure, passwordless access.
- Credential Management — List and delete registered WebAuthn credentials for specific users.
- User Administration — Create, retrieve, and list users and their associated credentials via admin tools.
- Transaction Security — Initialize and finalize passkey-signed transactions for sensitive operations like payments.
- Session Validation — Publicly validate sessions and retrieve JWKS for token verification.
How it works
- Subscribe to this server
- Enter your Hanko Tenant ID and API Key
- Start managing identity flows from your MCP-compatible client
Who is this for?
- Developers — quickly test and debug WebAuthn registration and login flows without manual API calls.
- Security Engineers — audit user credentials and manage identity access policies through a conversational interface.
- Product Teams — simulate and verify user onboarding and transaction signing workflows.
Built-in capabilities (15)
Create a new user via Admin API
Get a user by ID via Admin API
List WebAuthn credentials for a user via Admin API
List users via Admin API
Execute a Hanko Flow action
Delete a WebAuthn credential
List WebAuthn credentials for a user
Finalize a passkey login
Returns publicKey options for navigator.credentials.get(). Initialize a passkey login
Finalize a passkey registration
Returns publicKey options for navigator.credentials.create(). Initialize a passkey registration
Finalize a passkey transaction
g., payment confirmation) for an existing user. Initialize a passkey transaction
Get JSON Web Key Set (JWKS)
Validate a Hanko session token
Why Cursor?
Cursor's Agent mode turns Hanko (Passkey Auth) into an in-editor superpower. Ask Cursor to generate code using live data from Hanko (Passkey Auth) and it fetches, processes, and writes. all in a single agentic loop. 15 tools appear alongside file editing and terminal access, creating a unified development environment grounded in real-time information.
- —
Agent mode turns Cursor into an autonomous coding assistant that can read files, run commands, and call MCP tools without switching context
- —
Cursor's Composer feature can generate entire files using real-time data fetched through MCP. no copy-pasting from external dashboards
- —
MCP tools appear alongside built-in tools like file reading and terminal access, creating a unified agentic environment
- —
VS Code extension compatibility means your existing workflow, keybindings, and extensions all work alongside MCP tools
Hanko (Passkey Auth) in Cursor
Hanko (Passkey Auth) and 4,000+ other MCP servers. One platform. One governance layer.
Teams that connect Hanko (Passkey Auth) to Cursor through Vinkius don't need to source, host, or maintain individual MCP servers. Every tool call runs inside a hardened runtime with credential isolation, DLP, and a signed audit chain.
Raw MCP | Vinkius | |
|---|---|---|
| Server catalog | Find and host yourself | 4,000+ managed |
| Infrastructure | Self-hosted | Sandboxed V8 isolates |
| Credential handling | Plaintext in config | Vault + runtime injection |
| Data loss prevention | None | Configurable DLP policies |
| Kill switch | None | Global instant shutdown |
| Financial circuit breakers | None | Per-server limits + alerts |
| Audit trail | None | Ed25519 signed logs |
| SIEM log streaming | None | Splunk, Datadog, Webhook |
| Honeytokens | None | Canary alerts on leak |
| Custom domains | Not applicable | DNS challenge verified |
| GDPR compliance | Manual effort | Automated purge + export |
Why teams choose Vinkius for Hanko (Passkey Auth) in Cursor
The Hanko (Passkey Auth) MCP Server runs on Vinkius-managed infrastructure inside AWS — a purpose-built runtime with per-request V8 isolates, Ed25519 signed audit chains, and sub-40ms cold starts. All 15 tools execute in hardened sandboxes optimized for native MCP execution.
Your AI agents in Cursor only access the data you authorize, with DLP that blocks sensitive information from ever reaching the model, kill switch for instant shutdown, and up to 60% token savings. Enterprise-grade infrastructure, zero maintenance.
* Every MCP server runs on Vinkius-managed infrastructure inside AWS - a purpose-built runtime with per-request V8 isolates, Ed25519 signed audit chains, and sub-40ms cold starts optimized for native MCP execution. See our infrastructure
How Vinkius secures
Hanko (Passkey Auth) for Cursor
Every tool call from Cursor to the Hanko (Passkey Auth) MCP Server is protected by DLP redaction, cryptographic audit chains, V8 sandbox isolation, kill switch, and financial circuit breakers.
Frequently asked questions
How do I start a new passkey registration for a user?
Use the passkey_registration_init tool with the user's ID and username. This will return the necessary WebAuthn options to be used on the client side.
Can I view all WebAuthn credentials associated with a specific user?
Yes, you can use the passkey_list_credentials tool (or admin_list_user_credentials for admin access) to retrieve a list of all registered passkeys for any user ID.
Is it possible to create a user directly through the AI agent?
Absolutely. Use the admin_create_user tool to provision a new user in your Hanko project by providing a unique user ID.
What is Agent mode and why does it matter for MCP?
Agent mode is Cursor's autonomous execution mode where the AI can perform multi-step tasks: reading files, editing code, running terminal commands, and calling MCP tools. Without Agent mode, Cursor operates in a simpler ask-and-answer mode that doesn't support tool calling. Always ensure you're in Agent mode when working with MCP servers.
Where does Cursor store MCP configuration?
Cursor looks for MCP server configurations in a mcp.json file. You can configure servers at the project level (.cursor/mcp.json in your project root) or globally (~/.cursor/mcp.json). Project-level configs take precedence.
Can Cursor use MCP tools in inline edits?
No. MCP tools are only available in Agent mode through the chat panel. Inline completions and Tab suggestions do not trigger MCP tool calls. This is by design. tool calls require user visibility and approval.
How do I verify MCP tools are loaded?
Open Settings → Features → MCP and look for your server name. A green indicator means the server is connected. You can also check Agent mode's available tools by clicking the tools dropdown in the chat panel.
Tools not appearing in Cursor
Ensure you are in Agent mode (not Ask mode). MCP tools only work in Agent mode.
Server shows as disconnected
Check Settings → Features → MCP and verify the server status. Try clicking the refresh button.
Explore More MCP Servers
View all →
Ziflow
12 toolsEnterprise online proofing and content review platform to manage creative workflows with AI.
Sansan
8 toolsDigitize and manage business cards via AI — browse contacts, verify details, and explore your company's network effortlessly.
BR Business Days Calculator
2 toolsStop LLMs from calculating SLAs incorrectly. An local, deterministic engine that adds business days while perfectly avoiding weekends and Brazilian national holidays.
Chatham Financial
8 toolsManage financial risk and valuations via Chatham Financial — track trades, monitor debt, and access market data directly from any AI agent.