Check 24h trading volume and liquidity for portfolio coins
AI agents call check_liquidity to retrieve information from Crypto Portfolio 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 and queries trading volume and liquidity metrics—informational data with no ability to modify, execute, or perform destructive operations. It fits the Read category as a data retrieval function. Severity is low because misuse only exposes market information already public on exchanges, with minimal blast radius.
From the tool's definition Tool name 'check_liquidity' and description 'Check 24h trading volume and liquidity for portfolio coins' indicate a query operation that retrieves market data. The server is explicitly described as 'read-only portfolio management and analytics'.
Attacks that exploit this kind of access
Check 24h trading volume and liquidity for portfolio coins. It is categorised as a Read tool in the Crypto Portfolio MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Crypto Portfolio MCP Server MCP server in PolicyLayer and add a rule for check_liquidity: 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 Crypto Portfolio MCP Server. Nothing to install.
check_liquidity 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 check_liquidity 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 check_liquidity. 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.
check_liquidity is provided by the Crypto Portfolio MCP Server MCP server (lev-corrupted/cryptoportfoliomcpserver). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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