send_bms · SOLAPI MCP Server MCP: Risk & Policy

WHAT IT DOES

What send_bms does on SOLAPI MCP Server

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

WHY IT NEEDS A POLICY

Why send_bms needs a policy

This tool sends messages to external recipients via the Kakao platform, which is a Write operation with external side effects. While it doesn't move money, sending messages at scale could constitute misuse (spam, phishing), making the blast radius high. The safety guard (confirmed=true) acknowledges the risk of misuse.

From the tool's definition Send a Kakao friendtalk (BMS) message... SAFETY: requires confirmed=true

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

send_bms Rate-limited

send_bms 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": {
    "send_bms": {
      "limits": [
        {
          "counter": "send_bms_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 SOLAPI MCP Server, so you can run agents against it safely.

FAQ

Questions about send_bms

What does the send_bms tool do? +

Send a Kakao friendtalk (BMS) message. Requires pfid. Either templateId (template mode) or free=true with bubbleType (free-form mode). SAFETY: requires confirmed=true. It is categorised as a Write tool in the SOLAPI MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on send_bms? +

Register the SOLAPI MCP Server MCP server in PolicyLayer and add a rule for send_bms: 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 SOLAPI MCP Server. Nothing to install.

What risk level is send_bms? +

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

Can I rate-limit send_bms? +

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

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

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