AI agents call get_crypto_price to retrieve information from My without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves public cryptocurrency market data without modifying, executing operations, or committing financial transactions. It is purely informational—a straightforward data fetch with no destructive, transactional, or command-execution capabilities. The severity is low because misuse (e.g., querying it repeatedly) poses minimal risk beyond potential rate-limiting or resource consumption.
From the tool's definition Tool name is 'get_crypto_price' and description states 'Get current price, market cap and 24h change for a cryptocurrency.' The verb 'Get' and the retrieval of read-only market data (price, market cap, change) indicate a query operation with no side effects.
Attacks that exploit this kind of access
Get current price, market cap and 24h change for a cryptocurrency. It is categorised as a Read tool in the My MCP Server, which means it retrieves data without modifying state.
Register the My MCP server in PolicyLayer and add a rule for get_crypto_price: 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 My. Nothing to install.
get_crypto_price 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_crypto_price 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_crypto_price. 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_crypto_price is provided by the My MCP server (ovezthaking/mcp-server). 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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