topicsSearch

THE RISK

Low Risk

Why topicsSearch needs a policy

This tool performs a search query on forum topics, which is a read-only operation that retrieves data without modifying, deleting, or executing anything. It carries minimal risk—the worst case is an AI agent searches for many topics, causing minor API load. No data is created, modified, or destroyed.

From the tool's definition Tool name is 'topicsSearch' and description states it 'Searches forum topics by title.' Searching is a query operation with no side effects.

Documented attack patterns abuse exactly the kind of access topicsSearch gives an agent:

POLICY

How to control topicsSearch

PolicyLayer is an MCP gateway — it sits between your AI agents and Telegram MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for topicsSearch:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "topicsSearch": {}
  }
}

topicsSearch is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.

Create a free account and register Telegram MCP Server — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

CAP THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

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All 38 Telegram MCP Server tools →

Read tools on other servers

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Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Data exfiltration → How read access becomes an exfiltration channel when chained with untrusted content.
MCP token cost → What connecting this server costs in context-window tokens on every request.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about topicsSearch

What does the topicsSearch tool do? +

Searches forum topics by title. It is categorised as a Read tool in the Telegram MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on topicsSearch? +

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

What risk level is topicsSearch? +

topicsSearch is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit topicsSearch? +

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

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

topicsSearch is provided by the Telegram MCP Server MCP server (kfastov/tgcli). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Telegram MCP Server tool call.

Start from Telegram MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →