send_voice · Claudegram MCP: Risk & Policy

WHAT IT DOES

What send_voice does on Claudegram

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

WHY IT NEEDS A POLICY

Why send_voice needs a policy

This tool creates and sends a new message (voice note) to a Telegram conversation. This is a reversible Write operation—messages can be deleted or edited after sending, and no data is irreversibly destroyed. The severity is medium because an agent could spam users, send inappropriate content, or impersonate the account holder, but the blast radius is limited to messaging on a single account's contacts.

From the tool's definition Tool name 'send_voice' and description 'Отправить голосовое сообщение' (Send voice message) indicates creation of a new message object in Telegram.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

send_voice Rate-limited

send_voice 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_voice": {
      "limits": [
        {
          "counter": "send_voice_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 Claudegram, so you can run agents against it safely.

FAQ

Questions about send_voice

What does the send_voice tool do? +

Отправить голосовое сообщение (.ogg/.mp3 → opus voice note). It is categorised as a Write tool in the Claudegram 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_voice? +

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

What risk level is send_voice? +

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

Can I rate-limit send_voice? +

Yes. Add a rate_limit block to the send_voice 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_voice completely? +

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

send_voice is provided by the Claudegram MCP server (sanjar-x/claudegram). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.