Get top holdings by value.
AI agents call get_top_holdings to retrieve information from Corpus MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves portfolio data (top holdings ranked by value) for analytical purposes. It has no side effects—no data is created, modified, deleted, or financial transactions are executed. The read-only nature and informational purpose place it firmly in the Read category with low severity, as an AI agent misusing it would at worst expose existing portfolio information rather than cause harm.
From the tool's definition Tool name 'get_top_holdings' and description 'Get top holdings by value' indicate a retrieval operation that queries and returns data about portfolio holdings without modifying, deleting, or executing any operations.
Attacks that exploit this kind of access
Get top holdings by value. It is categorised as a Read tool in the Corpus MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Corpus MCP Server MCP server in PolicyLayer and add a rule for get_top_holdings: 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 Corpus MCP Server. Nothing to install.
get_top_holdings 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_top_holdings 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_top_holdings. 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_top_holdings is provided by the Corpus MCP Server MCP server (mathankarthik18/corpus-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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