Get large lending events (whale activity). Returns events with amount > $100,000 USD.
AI agents call get_whale_activity to retrieve information from DeFi Rates MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries large lending events from DeFi protocols—it retrieves data about whale activity based on filter criteria ($100k+ transactions). This is fundamentally a Read operation (data retrieval with no side effects). While the data could inform financial decisions, the tool itself does not move money, execute trades, or trigger transactions.
From the tool's definition Tool name: get_whale_activity; description: 'Get large lending events (whale activity). Returns events with amount > $100,000 USD.' The tool retrieves and queries historical/current lending event data without modifying state.
Attacks that exploit this kind of access
Get large lending events (whale activity). Returns events with amount > $100,000 USD. It is categorised as a Read tool in the DeFi Rates MCP Server MCP Server, which means it retrieves data without modifying state.
Register the DeFi Rates MCP Server MCP server in PolicyLayer and add a rule for get_whale_activity: 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 DeFi Rates MCP Server. Nothing to install.
get_whale_activity 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_whale_activity 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_whale_activity. 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_whale_activity is provided by the DeFi Rates MCP Server MCP server (qingfeng/defi-rates-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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