oauth2_auth

THE RISK

Low Risk

Why oauth2_auth needs a policy

The description is empty, so the classification is based solely on the tool name and server context. 'oauth2_auth' likely performs OAuth2 authentication, which could be a Write or Execute operation (setting auth tokens/state). Given the server is a security testing tool for API vulnerabilities, it may be used to test or configure OAuth2 authentication flows. Without a description, confidence is low.

From the tool's definition Tool name is 'oauth2_auth' but description is empty or uninformative.

Documented attack patterns abuse exactly the kind of access oauth2_auth gives an agent:

POLICY

How to control oauth2_auth

PolicyLayer is an MCP gateway — it sits between your AI agents and CyberMCP, and nothing reaches the server without passing your rules. This is the rule we recommend for oauth2_auth:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "oauth2_auth": {
      "limits": [
        {
          "counter": "oauth2_auth_rate",
          "window": "minute",
          "max": 60,
          "scope": "grant"
        }
      ]
    }
  }
}

oauth2_auth gets a rate cap, and everything else on the server is denied unless you say otherwise.

Create a free account and register CyberMCP — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

SET A RULE FOR THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

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All 14 CyberMCP tools →

Other tools on other servers

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Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Tool risk categories → How PolicyLayer classifies MCP tools by what they can do.
MCP tool → What an MCP tool is and how clients discover and call it.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about oauth2_auth

What does the oauth2_auth tool do? +

oauth2_auth. It is categorised as a Other tool in the CyberMCP MCP Server, which means it performs auxiliary operations.

How do I enforce a policy on oauth2_auth? +

Register the Cyber MCP server in PolicyLayer and add a rule for oauth2_auth: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches CyberMCP. Nothing to install.

What risk level is oauth2_auth? +

oauth2_auth is a Other tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit oauth2_auth? +

Yes. Add a rate_limit block to the oauth2_auth rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.

How do I block oauth2_auth completely? +

Set action: deny in the PolicyLayer policy for oauth2_auth. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.

What MCP server provides oauth2_auth? +

oauth2_auth is provided by the Cyber MCP server (ricauts/cybermcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every CyberMCP tool call.

Start from CyberMCP, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →