Cerbos (Access Control) MCP Server for Claude DesktopGive Claude Desktop instant access to 19 tools to Add Policy, Add Schema, Authzen Evaluation, and more

Name: Cerbos (Access Control)
Price: 29 USD
Availability: InStock
Rating: 4.9 (1 reviews)
Author: Vinkius

GDPR Free for Subscribers

Claude Desktop is Anthropic's native application for interacting with Claude AI models on macOS and Windows. It was the first consumer application to ship with built-in MCP support, making it the reference implementation for the Model Context Protocol standard.

Ask AI about this MCP Server for Claude Desktop

Open in ChatGPT Open in Claude Open in Perplexity

The Cerbos (Access Control) MCP Server for Claude Desktop is a standout in the Developer Tools category — giving your AI agent 19 tools to work with, ready to go from day one.

Built for AI Agents by Vinkius

Vinkius delivers Streamable HTTP and SSE to any MCP client

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+ other MCP clients

Classic Setup·json

{
  "mcpServers": {
    "cerbos-access-control": {
      // Your Vinkius token. get it at cloud.vinkius.com
      "url": "https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
    }
  }
}

RecommendedModern Approach — Zero Configuration

Vinkius Desktop App

The modern way to manage MCP Servers — no config files, no terminal commands. Install Cerbos (Access Control) and 4,000+ MCP Servers from a single visual interface.

Download Free Open SourceNo signup required

Fully ManagedVinkius Servers

60%Token savings

High SecurityEnterprise-grade

IAMAccess control

EU AI ActCompliant

DLPData protection

V8 IsolateSandboxed

Ed25519Audit chain

<40msKill switch

Stream every event to Splunk, Datadog, or your own webhook in real-time

* 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

About Cerbos (Access Control) MCP Server

Connect your Cerbos instance to any AI agent to streamline authorization management and policy auditing through natural language.

Claude Desktop is the definitive way to connect Cerbos (Access Control) to your AI workflow. Add Vinkius Edge URL to your config, restart the app, and Claude immediately exposes all 19 tools in the chat interface. ask a question, Claude calls the right tool, and you see the answer. Zero code, zero context switching.

What you can do

Permission Checks — Use check_resources to evaluate if a principal (user) has the rights to perform specific actions on resources.
Query Planning — Generate AST query plans with plan_resources to filter database results based on complex authorization logic.
Policy Management — List, retrieve, add, or delete policies (RBAC/ABAC) using the Admin API tools like list_policies and add_policy.
Schema & Auditing — Inspect resource schemas and review access logs with list_auditLogs to ensure compliance.
Health & Metrics — Monitor your PDP (Policy Decision Point) status with get_health and get_metrics directly from the chat.

The Cerbos (Access Control) MCP Server exposes 19 tools through the Vinkius. Connect it to Claude Desktop in under two minutes — credentials fully managed, no infrastructure to provision, no vendor lock-in. Your configuration, your data, your control.

All 19 Cerbos (Access Control) tools available for Claude Desktop

When Claude Desktop connects to Cerbos (Access Control) through Vinkius, your AI agent gets direct access to every tool listed below — spanning authorization, rbac, abac, and more. Every call runs in a secure, isolated environment with full audit visibility. Beyond a simple connection, you get real-time monitoring of agent activity, enterprise governance, and optimized token usage.

add

Add policy on Cerbos (Access Control)

Add a new policy

add

Add schema on Cerbos (Access Control)

Add or update a schema

authzen

Authzen evaluation on Cerbos (Access Control)

Perform a single AuthZEN access evaluation

authzen

Authzen evaluations on Cerbos (Access Control)

Perform batch AuthZEN access evaluations

check

Check resources on Cerbos (Access Control)

Check permissions for a set of resources

delete

Delete policy on Cerbos (Access Control)

Delete a policy by ID

disable

Disable policy on Cerbos (Access Control)

Disable a policy

enable

Enable policy on Cerbos (Access Control)

Enable a policy

get

Get authzen config on Cerbos (Access Control)

Get AuthZEN configuration metadata

get

Get health on Cerbos (Access Control)

Get Cerbos health status

get

Get metrics on Cerbos (Access Control)

Get Prometheus metrics from Cerbos

get

Get policy on Cerbos (Access Control)

Get a specific policy by ID

get

Get schema on Cerbos (Access Control)

Get a specific schema by ID

get

Get server info on Cerbos (Access Control)

Get Cerbos server version and build information

list

List audit logs on Cerbos (Access Control)

List audit logs

list

List policies on Cerbos (Access Control)

List all policies

list

List schemas on Cerbos (Access Control)

List all schemas

plan

Plan resources on Cerbos (Access Control)

Produce a query plan (AST) for filtering resources

update

Update policy on Cerbos (Access Control)

Update an existing policy

Connect Cerbos (Access Control) to Claude Desktop via MCP

Follow these steps to wire Cerbos (Access Control) into Claude Desktop. The entire setup takes under two minutes — your credentials stay safe behind Vinkius.

Open Claude Desktop Settings

Go to Settings → Developer → Edit Config to open claude_desktop_config.json

Add the MCP Server

Paste the configuration above into the mcpServers section

Restart Claude Desktop

Close and reopen Claude Desktop to load the new server

Start using Cerbos (Access Control)

Look for the 🔌 icon in the chat. your 19 tools are now available

Why Use Claude Desktop with the Cerbos (Access Control) MCP Server

Claude Desktop by Anthropic provides unique advantages when paired with Cerbos (Access Control) through the Model Context Protocol.

Claude Desktop is the reference MCP client. it was designed alongside the protocol itself, ensuring the most complete and stable MCP implementation available

Zero-code configuration: add a server URL to a JSON file and Claude instantly discovers and exposes all available tools in the chat interface

Claude's extended thinking capability lets it reason through multi-step tool usage, chaining multiple API calls to answer complex questions

Enterprise-grade security with local config storage. your tokens never leave your machine, and connections go directly to Vinkius Edge network

Cerbos (Access Control) + Claude Desktop Use Cases

Practical scenarios where Claude Desktop combined with the Cerbos (Access Control) MCP Server delivers measurable value.

Interactive data exploration: ask Claude to query DNS records, look up WHOIS data, and cross-reference results in a single conversation

Ad-hoc security audits: type a domain name and let Claude enumerate subdomains, check DNS history, and flag configuration anomalies. all through natural language

Executive briefings: generate comprehensive domain intelligence reports by asking Claude to compile findings into a formatted summary

Learning and training: new team members can explore API capabilities conversationally without needing to read documentation

Example Prompts for Cerbos (Access Control) in Claude Desktop

Ready-to-use prompts you can give your Claude Desktop agent to start working with Cerbos (Access Control) immediately.

"Check if user 'user_123' with role 'admin' can 'delete' the resource 'document:abc'."

"Show me the health status and version of my Cerbos server."

"List all policies and tell me if there are any for the 'expense' resource."

Troubleshooting Cerbos (Access Control) MCP Server with Claude Desktop

Common issues when connecting Cerbos (Access Control) to Claude Desktop through Vinkius, and how to resolve them.

Server not appearing after restart

Ensure the JSON is valid (no trailing commas). Check the file path: ~/Library/Application Support/Claude/claude_desktop_config.json (macOS) or %APPDATA%\\Claude\\ (Windows).

Authentication error

Verify your Vinkius token is correct. Go to cloud.vinkius.com to regenerate it if needed.

Tools not showing in chat

Click the 🔌 icon at the bottom of the chat input. If it shows 0 tools, the server may still be connecting. wait a few seconds.

Cerbos (Access Control) + Claude Desktop FAQ

Common questions about integrating Cerbos (Access Control) MCP Server with Claude Desktop.

How does Claude Desktop discover MCP tools?

When Claude Desktop starts, it reads the claude_desktop_config.json file and connects to each configured MCP server. It calls the tools/list endpoint to fetch the schema for every available tool, then surfaces them as clickable options in the chat interface via the 🔌 icon.

What happens if the MCP server is temporarily unavailable?

Claude Desktop handles disconnections gracefully. if the server is unreachable at startup, the tools simply won't appear. Once the server becomes available again, restarting Claude Desktop will re-establish the connection. There is no timeout penalty or error loop.

Can I connect multiple MCP servers simultaneously?

Yes. You can add as many servers as you need in the mcpServers section of the config file. Each server appears as a separate tool provider, and Claude can use tools from multiple servers in a single conversation turn.

Is there a limit on the number of tools per server?

Claude Desktop can handle hundreds of tools per server. However, for optimal LLM performance, Vinkius servers are designed to expose focused, well-documented tool sets rather than overwhelming the model with too many options.

Does Claude Desktop support Streamable HTTP transport?

Yes. Claude Desktop supports both SSE (Server-Sent Events) and the newer Streamable HTTP transport that Vinkius uses. Simply provide the server URL. Claude auto-negotiates the transport protocol.