set_auth_token · MCP OpenAPI Template MCP: Risk & Policy

WHAT IT DOES

What set_auth_token does on MCP OpenAPI Template

AI agents use set_auth_token to create or update resources in MCP OpenAPI Template — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your MCP OpenAPI Template environment.

WHY IT NEEDS A POLICY

Why set_auth_token needs a policy

This tool modifies authentication state by setting a JWT token. While authentication configuration itself is not inherently destructive, it is a write operation that could have significant security implications if misused—an agent could set invalid tokens, overwrite legitimate credentials, or manipulate auth state.

From the tool's definition The tool 'set_auth_token' is described as setting (configuring) a JWT token for authentication. The verb 'configura' (configure/set) indicates modification of authentication credentials or state, which is a write operation that creates or modifies data…

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

set_auth_token Rate-limited

set_auth_token stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "set_auth_token": {
      "limits": [
        {
          "counter": "set_auth_token_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches MCP OpenAPI Template, so you can run agents against it safely.

FAQ

Questions about set_auth_token

What does the set_auth_token tool do? +

Configura el token JWT para autenticación con Auth Gateway. It is categorised as a Write tool in the MCP OpenAPI Template MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on set_auth_token? +

Register the MCP OpenAPI Template MCP server in PolicyLayer and add a rule for set_auth_token: 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 MCP OpenAPI Template. Nothing to install.

What risk level is set_auth_token? +

set_auth_token is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit set_auth_token? +

Yes. Add a rate_limit block to the set_auth_token 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 set_auth_token completely? +

Set action: deny in the PolicyLayer policy for set_auth_token. 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 set_auth_token? +

set_auth_token is provided by the MCP OpenAPI Template MCP server (jesusperezdeveloper/mcp_openapi_template). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.