Peer companies for a US-listed ticker — other companies in the same sector and sub-industry, useful for comparables, relative valuation, and screening. Pass ticker (optionally grouping to control how peers are grouped); returns a ranked list of peer ticker symbols (the input symbol is usually fir...
AI agents call stocks.peers to retrieve information from Mcp without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and queries financial reference data (peer company information for a stock ticker) without modifying, executing, or affecting any systems or accounts. It is a read-only lookup that returns comparable company symbols. The MCP server context indicates pay-per-call settlement, but the tool itself performs no financial transaction—only data retrieval.
From the tool's definition Tool description states it 'returns a ranked list of peer ticker symbols' and is 'useful for comparables, relative valuation, and screening' — purely informational retrieval with no side effects. No write, execute, delete, or financial operation is performed.
Attacks that exploit this kind of access
Peer companies for a US-listed ticker — other companies in the same sector and sub-industry, useful for comparables, relative valuation, and screening. Pass ticker (optionally grouping to control how peers are grouped); returns a ranked list of peer ticker symbols (the input symbol is usually first). Data by Finnhub. It is categorised as a Read tool in the Mcp MCP Server, which means it retrieves data without modifying state.
Register the MCP server in PolicyLayer and add a rule for stocks.peers: 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 Mcp. Nothing to install.
stocks.peers 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 stocks.peers 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 stocks.peers. 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.
stocks.peers is provided by the MCP server (@2sio/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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