planka_test_smtp · Planka MCP Server for Claude MCP

WHAT IT DOES

What planka_test_smtp does on Planka MCP Server for Claude

AI agents invoke planka_test_smtp to trigger actions in Planka MCP Server for Claude. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call — builds kicked off, notifications sent, workflows started.

WHY IT NEEDS A POLICY

Why planka_test_smtp needs a policy

Testing SMTP configuration initiates an external network operation (connecting to an SMTP server, potentially sending a test email). This is an Execute-category action as it triggers an external operation. It is admin-only, raising the severity, but the blast radius is limited since it's primarily a connectivity test rather than a destructive or financial action.

From the tool's definition 'Test SMTP configuration' — triggers an external SMTP connection/email test operation

Risk signalsAdmin/system-level operation

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

planka_test_smtp Rate-limited

planka_test_smtp stays usable, but rate-capped — a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "planka_test_smtp": {
      "limits": [
        {
          "counter": "planka_test_smtp_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL →

Instant setup, no code required.

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

FAQ

Questions about planka_test_smtp

What does the planka_test_smtp tool do? +

Test SMTP configuration (admin only). It is categorised as a Execute tool in the Planka MCP Server for Claude MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on planka_test_smtp? +

Register the Planka MCP Server for Claude MCP server in PolicyLayer and add a rule for planka_test_smtp: 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 Planka MCP Server for Claude. Nothing to install.

What risk level is planka_test_smtp? +

planka_test_smtp is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit planka_test_smtp? +

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

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

planka_test_smtp is provided by the Planka MCP Server for Claude MCP server (nextheberg/planka-mcp-server-for-claude). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.