telegram_set_message_reaction

WHAT IT DOES

What telegram_set_message_reaction does on Telegram MCP Server & Channel Monitor

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

WHY IT NEEDS A POLICY

Why telegram_set_message_reaction needs a policy

Setting/removing emoji reactions is a reversible modification operation that changes message state but does not delete data, execute code, or have financial consequences. It falls under Write category. Severity is low because emoji reactions are non-critical metadata with minimal blast radius if misused—an agent could spam reactions but cannot cause data loss, financial harm, or system compromise.

From the tool's definition Tool name 'telegram_set_message_reaction' and description states it 'sets or removes emoji reactions on messages'. This modifies message metadata (reaction state) reversibly without deleting content or executing arbitrary operations.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

telegram_set_message_reaction Rate-limited

telegram_set_message_reaction 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": {
    "telegram_set_message_reaction": {
      "limits": [
        {
          "counter": "telegram_set_message_reaction_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

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Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Telegram MCP Server & Channel Monitor, so you can run agents against it safely.

FAQ

Questions about telegram_set_message_reaction

What does the telegram_set_message_reaction tool do? +

메시지에 이모지 리액션을 설정하거나 제거합니다. It is categorised as a Write tool in the Telegram MCP Server & Channel Monitor MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on telegram_set_message_reaction? +

Register the Telegram MCP Server & Channel Monitor MCP server in PolicyLayer and add a rule for telegram_set_message_reaction: 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 Telegram MCP Server & Channel Monitor. Nothing to install.

What risk level is telegram_set_message_reaction? +

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

Can I rate-limit telegram_set_message_reaction? +

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

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

telegram_set_message_reaction is provided by the Telegram MCP Server & Channel Monitor MCP server (ruchiayeon/telegram-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.