set_profile_photo · Tg MCP: Risk & Policy

WHAT IT DOES

What set_profile_photo does on Tgmcp

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

WHY IT NEEDS A POLICY

Why set_profile_photo needs a policy

This tool modifies user profile metadata (the photo) reversibly. It is a Write operation rather than Destructive because: (1) the previous photo is typically retained in version history or can be changed again, (2) the operation is not irreversible, and (3) the impact is limited to cosmetic profile changes with no data loss or external side effects.

From the tool's definition Tool name 'set_profile_photo' and description 'Set a new profile photo' indicate a modification operation that creates or updates user profile data.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

set_profile_photo Rate-limited

set_profile_photo 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_profile_photo": {
      "limits": [
        {
          "counter": "set_profile_photo_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 Tgmcp, so you can run agents against it safely.

FAQ

Questions about set_profile_photo

What does the set_profile_photo tool do? +

Set a new profile photo. It is categorised as a Write tool in the Tgmcp 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_profile_photo? +

Register the Tg MCP server in PolicyLayer and add a rule for set_profile_photo: 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 Tgmcp. Nothing to install.

What risk level is set_profile_photo? +

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

Can I rate-limit set_profile_photo? +

Yes. Add a rate_limit block to the set_profile_photo 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_profile_photo completely? +

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

set_profile_photo is provided by the Tg MCP server (oevortex/tgmcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.