search_rfc_functions

THE RISK

Low Risk

Why search_rfc_functions needs a policy

This tool retrieves or queries metadata about available RFC functions—it searches and lists available functions without calling them, modifying data, or triggering external operations. The search operation is a read-only retrieval of information about SAP RFC function catalogs. No side effects or state changes occur from searching.

From the tool's definition Tool name 'search_rfc_functions' and description 'Search for RFC functions using keywords in names and descriptions' indicate a query/search operation with no modification or execution of functions.

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

POLICY

How to control search_rfc_functions

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

policy.json

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

search_rfc_functions 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 SAP RFC 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

More SAP RFC MCP Server tools

Execute call_rfc_function Execute an arbitrary RFC function with parameters Read bulk_load_metadata Bulk load metadata for multiple RFC functions Read get_function_metadata Get comprehensive metadata for an RFC function including parameters, types, and descriptio Read get_metadata_cache_stats Get statistics about the RFC metadata cache Read get_rfc_functions Query available RFC functions with optional filtering Read get_system_info Get basic SAP system information using RFC_SYSTEM_INFO Read get_table_structure Get the structure/metadata of an SAP table using DDIF_FIELDINFO_GET Read ping_connection Test SAP connection status and return basic connectivity info

All 15 SAP RFC MCP Server 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_rfc_functions

What does the search_rfc_functions tool do? +

Search for RFC functions using keywords in names and descriptions. It is categorised as a Read tool in the SAP RFC MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on search_rfc_functions? +

Register the SAP RFC MCP Server MCP server in PolicyLayer and add a rule for search_rfc_functions: 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 SAP RFC MCP Server. Nothing to install.

What risk level is search_rfc_functions? +

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

Can I rate-limit search_rfc_functions? +

Yes. Add a rate_limit block to the search_rfc_functions 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_rfc_functions completely? +

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

search_rfc_functions is provided by the SAP RFC MCP Server MCP server (thupalo/sap-rfc-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every SAP RFC MCP Server tool call.

Start from SAP RFC 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 →