Vinkius

Cerbos MCP for AI Agents. Govern Policy-Driven Resource Access & Database Queries

Cerbos helps your AI agents manage complex, policy-driven resource access control. Connect this MCP to any client to evaluate permissions and generate optimized query plans instantly through natural language conversation.

Cerbos MCP for AI Agents MCP is compatible with Claude Claude
Cerbos MCP for AI Agents MCP is compatible with ChatGPT ChatGPT
Cerbos MCP for AI Agents MCP is compatible with Cursor Cursor
Cerbos MCP for AI Agents MCP is compatible with Gemini Gemini
Cerbos MCP for AI Agents MCP is compatible with Windsurf Windsurf
Cerbos MCP for AI Agents MCP is compatible with VS Code VS Code
Cerbos MCP for AI Agents MCP is compatible with JetBrains JetBrains
Cerbos MCP for AI Agents MCP is compatible with Vercel Vercel
See Vinkius in Action

Give Claude and any AI agent real-world access

Verify specific permissions

Check if a user is allowed to perform an action on a given resource using check_resources.

Generate database query filters

Produce detailed, optimized query plans that restrict results based on the principal's permissions using plan_resources.

Process batch access requests

Evaluate multiple complex access policies at once using authzen_evaluations for standardized compliance checks.

Execute single policy evaluations

Run a single, focused access check against the system model via authzen_evaluation.

Inspect instance configuration

Retrieve vital metadata about your Cerbos setup and its current policies using get_server_info or get_authzen_config.

Waiting for input…

AI Agent
Cerbos MCP for AI Agents

What AI agents can do with 6 Tools in the Cerbos MCP for Policy Evaluation

These tools allow you to check resources, plan queries, run batch evaluations, and retrieve system metadata directly from your AI agent chat interface.

Make your AI actually useful.

Add this MCP to Claude, Cursor, or Windsurf and your AI stops guessing. It gets real tools to look things up, take action, and handle the stuff you keep doing by hand.

Start using Cerbos MCP

Get Authzen Config

Retrieves the specific endpoint URLs needed for using the AuthZEN APIs.

Authzen Evaluation

Performs a single, focused evaluation of an access request using the standardized...

Authzen Evaluations

Handles batch evaluations for multiple access requests, supporting complex...

Check Resources

Performs a read-only check to determine if a principal has permission on a defined...

Plan Resources

Generates an Abstract Syntax Tree (AST) query plan that filters database results...

Get Server Info

Returns version and build details, helping you verify the status of your Cerbos instance.

Security and governance baked right in.

Pick your AI client below to get set up. Just create a Vinkius account, subscribe, and you're instantly up and running. We handle the entire backend infrastructure, delivering out-of-the-box support for HTTPS Streamable, SSE, and OAuth2—zero messy routing required.

Cerbos MCP for AI Agents MCP is compatible with Claude

Claude AI

1

Open Claude Settings

Go to claude.ai, click your profile icon, then navigate to Customize → Connectors.

2

Add Custom Connector

Click the "+" button and select Add custom connector. Paste your Vinkius endpoint URL:

https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp

Replace [YOUR_TOKEN_HERE] with your token from cloud.vinkius.com. For OAuth-protected servers, expand Advanced settings to add credentials.

3

Start a conversation

Open a new chat. The Cerbos MCP for AI Agents integration is available immediately — no restart needed.

Choose How to Get Started

Build a custom MCP for your own tools, or connect a ready-made integration from our catalog.

Build Your Own

Turn any API into an MCP. Import a spec, define Agent Skills, or deploy with MCPFusion.

  • Import from OpenAPI, Swagger, or YAML specs
  • Create Agent Skills with progressive disclosure
  • Deploy to edge with MCPFusion framework
  • Built in DLP, auth, and compliance on each call
  • Real time usage dashboard and cost metering
  • Publish to catalog or keep private
Start building

Make Your AI Do More

Start with Cerbos, then connect any of our 5,200+ other servers whenever your AI needs more. One click, no limits.

  • Use this MCP plus 5,200+ others, all in one place
  • Add new capabilities to your AI anytime you want
  • Connections are secured and governed automatically
  • Track usage and costs across all your servers
  • Works with Claude, ChatGPT, Cursor, and more
  • New servers added to the catalog weekly
Cerbos MCP for AI Agents MCP server cover

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

VINKIUS CLOUD

Cloud Hosted

Managed infra

V8 Isolated

Sandboxed per request

Zero-Trust Proxy

No stored credentials

DLP Enforced

Policy on each call

GDPR Compliant

EU data residency

Token Compression

~60% cost reduction

Your data is protected. See how we built it.

Cerbos MCP for AI Agents: Governing Resource Access Policies

Think about how you currently debug permissions. You open the dashboard, navigate through user roles, and manually run tests or use a series of separate API calls just to confirm if Principal A can perform Action B on Resource C. It's slow, it's tedious clicking across multiple screens, and it almost always requires writing temporary scripts that need cleaning up later.

With this MCP, you simply tell your AI agent what needs checking. The system instantly runs the policy evaluation. You don't write a single test script; you just get a clear answer: ALLOWED or DENIED. It changes debugging from an hours-long process into a quick chat exchange.

Cerbos MCP for AI Agents: Optimizing Database Query Plans

Before, when fetching data, developers often wrote queries that were too broad. They pulled back everything and then relied on the application code to filter out the sensitive records based on policy—a massive security risk and a performance killer.

Now, you generate an AST-based query plan using `plan_resources`. This ensures your database query is automatically constrained by the user's current policies. You get optimized data access right at the source.

What Cerbos MCP for AI Agents MCP does for your AI

Authorization logic is usually the messiest part of an application. You write it once, but you spend hours debugging it across different services and user roles. This MCP lets your AI agent handle that complexity directly in your chat window. Instead of calling five separate endpoints to check if a resource is visible or editable by a certain role, you just ask.

The system evaluates the policies instantly and tells you the outcome. You can even generate full query plans, so your downstream database calls are automatically filtered down to only what the user is authorized to see. Because this functionality handles core security logic, it's a perfect fit for Vinkius; you connect once from any compatible client and get access to robust policy management tools without writing boilerplate code.

Built · Hosted · Managed by Vinkius Cerbos MCP for AI Agents — Govern Resource Access Policies
Server ID 019e3875-b811-7120-ad7b-d6113ef92763
Vinkius Inspector
Compliance Grade A+
Score 98.33/100
Vinkius Inspector Badge — Score 98.33/100

Frequently asked questions about Cerbos MCP for AI Agents MCP

How does Cerbos MCP help me manage user permissions without writing complex code? +

It lets you talk to your AI agent and ask questions like 'Can this person do X on Y?' The system handles the entire policy evaluation, giving you a definitive answer. This cuts out hours of manual API scripting.

Is Cerbos MCP better than just using database roles for access control? +

Yes. Database roles are static; this MCP allows dynamic, attribute-based checks. You can enforce policies based on things like a user's department or the resource's creation date, which is much more flexible.

What if I need to see all resources for a given project? Does Cerbos MCP handle that? +

It does. You can use the query planning tools within the MCP. It generates an optimized filter you can apply directly to your database, so you only retrieve authorized records.

Does connecting the Cerbos MCP affect my existing application logic? +

No. The MCP acts as a policy layer that your AI agent calls when needed. It enhances your current workflow by providing an external source of truth for all access decisions, so you don't have to change core business logic.

Can I check compliance across many different users at once using Cerbos MCP? +

Absolutely. You can use the batch evaluation tools in the MCP. This lets you run large-scale audits, checking hundreds of potential access combinations with a single prompt.