search_services

THE RISK

Low Risk

Why search_services needs a policy

This tool retrieves and queries available AWS services without side effects. It matches the Read category definition: retrieves or queries data with no side effects (search, list, get, fetch). The search functionality is informational only, returning service metadata for use in cost estimation workflows. No data is modified, no code is executed, and no external operations are triggered.

From the tool's definition Tool performs a search operation that 'Returns service keys and names' from AWS services available in the calculator. The description explicitly indicates retrieval of data with no modification or execution of commands.

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

POLICY

How to control search_services

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

policy.json

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

search_services 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 Aws Calculator — 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 Aws Calculator tools

Execute refresh_estimate Open an estimate URL in a headless browser, trigger cost recalculation, and return the upd Write add_service Add one or more AWS services to an estimate. Field values follow these patterns based on f Write create_estimate Create a new empty estimate. Returns an estimate ID to use with add_service and export_est Write export_estimate Export an estimate to calculator.aws and get a shareable URL. The link will show the full Write update_service Update an existing service in an estimate by replacing its config. Use this to tweak value Read get_service_fields Get input fields for one or more AWS services. Returns field IDs, types, labels, and valid Read import_estimate Download an existing AWS Pricing Calculator estimate by URL or ID. Returns JSON (raw, for

All 8 Aws Calculator 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_services

What does the search_services tool do? +

Search AWS services available in the calculator. Returns service keys and names. Supports multiple comma-separated search terms (e.g. It is categorised as a Read tool in the Aws Calculator MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on search_services? +

Register the Aws Calculator MCP server in PolicyLayer and add a rule for search_services: 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 Aws Calculator. Nothing to install.

What risk level is search_services? +

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

Can I rate-limit search_services? +

Yes. Add a rate_limit block to the search_services 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_services completely? +

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

search_services is provided by the Aws Calculator MCP server (musheer360/aws-calculator-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Aws Calculator tool call.

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

CHECK YOUR STACK →