AI agents call compare_symbols to retrieve information from Sahmk without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Based on sibling tools and server purpose, this tool almost certainly retrieves and compares market data without modification or side effects. The lack of description reduces confidence slightly, but the consistent pattern of read-only market query tools on this server strongly suggests compare_symbols follows the same pattern.
From the tool's definition Tool is part of a Saudi market data server (Sahmk) alongside other read-only tools like get_quote, get_quotes, get_company, get_market_summary, get_historical, and get_ratios. The tool name 'compare_symbols' suggests comparative analysis of stock symbols.
Documented attack patterns abuse exactly the kind of access compare_symbols gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Sahmk, and nothing reaches the server without passing your rules. This is the rule we recommend for compare_symbols:
{
"version": "1",
"default": "deny",
"tools": {
"compare_symbols": {}
}
}compare_symbols is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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compare_symbols. It is categorised as a Read tool in the Sahmk MCP Server, which means it retrieves data without modifying state.
Register the Sahmk MCP server in PolicyLayer and add a rule for compare_symbols: 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 Sahmk. Nothing to install.
compare_symbols is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the compare_symbols 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.
Set action: deny in the PolicyLayer policy for compare_symbols. 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.
compare_symbols is provided by the Sahmk MCP server (sahmk-sa/sahmk-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Sahmk, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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12 Sahmk tools catalogued and risk-classified — across an index of 43,000+ MCP servers.