search_users_table

THE RISK

Low Risk

Why search_users_table needs a policy

The tool queries/searches existing user data in a table without creating, modifying, or deleting any records. It is purely informational. Severity is low because search operations have minimal blast radius; an AI agent misusing this tool would at worst retrieve unintended user information, which is a data exposure risk but not destructive or irreversible.

From the tool's definition Tool name is 'search_users_table' and description states it 'Search users in the data table by name or email' — this is a retrieval operation with no modifications or side effects.

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

POLICY

How to control search_users_table

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

policy.json

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

search_users_table 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 React Tools — 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

More React Tools tools

Execute app_navigate List available routes or navigate to a path in the app. Call without Execute admin_action Perform admin action Execute validate_form Run validation on the current form state and return all errors Write fill_field Fill a specific form field with a value. Write submit_form Validate and submit the registration form. Returns validation errors if form is invalid, o Read client_status Check if there is a client connected via WebSocket Read get_click_events Get user click events Read get_field_info Get detailed information about a specific form field

All 20 React Tools tools →

Read tools on other servers

M-Team MCP Server get_torrent_detail YouTube MCP Server search_channel Android Forensics ADB MCP Server parse_browser_history 0xarchive web3_challenge

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 search_users_table

What does the search_users_table tool do? +

Search users in the data table by name or email. It is categorised as a Read tool in the React Tools MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on search_users_table? +

Register the React Tools MCP server in PolicyLayer and add a rule for search_users_table: 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 React Tools. Nothing to install.

What risk level is search_users_table? +

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

Can I rate-limit search_users_table? +

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

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

search_users_table is provided by the React Tools MCP server (mcp-fe/mcp-fe). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every React Tools tool call.

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

CHECK YOUR STACK →