Get list of peer/similar companies for a stock symbol
AI agents call get_peers to retrieve information from MCP Finnhub Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves reference data (peer company lists) for informational purposes. It performs no modifications, deletions, executions, or financial transactions. The operation is a straightforward data query with no irreversible consequences or external side effects. Severity is low because even if misused by an agent, the worst outcome would be repeated queries consuming API quota, not damage to systems or data.
From the tool's definition Tool name 'get_peers' and description 'Get list of peer/similar companies for a stock symbol' indicate a retrieval operation that returns comparative company data with no side effects.
Attacks that exploit this kind of access
Get list of peer/similar companies for a stock symbol. It is categorised as a Read tool in the MCP Finnhub Server MCP Server, which means it retrieves data without modifying state.
Register the MCP Finnhub Server MCP server in PolicyLayer and add a rule for get_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 Finnhub Server. Nothing to install.
get_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 get_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 get_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.
get_peers is provided by the MCP Finnhub Server MCP server (nimblebraininc/mcp-finnhub). 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.
Teams ship this data inside their own products. See what a licence covers →