set_welcome_message · Solafon MCP: Risk & Policy

WHAT IT DOES

What set_welcome_message does on Solafon MCP

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

WHY IT NEEDS A POLICY

Why set_welcome_message needs a policy

This tool creates or modifies a welcome message, which is a reversible write operation. It does not delete data (Destructive), execute code (Execute), involve financial transactions (Financial), or retrieve data read-only (Read). The blast radius is minimal—a misconfigured welcome message affects only the user experience and can be easily corrected.

From the tool's definition Tool name 'set_welcome_message' and description 'Set the welcome message shown when a user starts a conversation' indicate a create/modify operation on stored configuration data.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

set_welcome_message Rate-limited

set_welcome_message 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_welcome_message": {
      "limits": [
        {
          "counter": "set_welcome_message_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 Solafon MCP, so you can run agents against it safely.

FAQ

Questions about set_welcome_message

What does the set_welcome_message tool do? +

Set the welcome message shown when a user starts a conversation. It is categorised as a Write tool in the Solafon MCP 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_welcome_message? +

Register the Solafon MCP server in PolicyLayer and add a rule for set_welcome_message: 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 Solafon MCP. Nothing to install.

What risk level is set_welcome_message? +

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

Can I rate-limit set_welcome_message? +

Yes. Add a rate_limit block to the set_welcome_message 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_welcome_message completely? +

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

set_welcome_message is provided by the Solafon MCP server (solafon/solafon-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.