获取指定虚拟币的当前价格
AI agents call get_coin_price to retrieve information from Crypto MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves cryptocurrency price data without side effects. It is a passive query operation that returns information only, matching the Read category. The severity is low because misuse would only expose price data, causing no financial loss or operational damage.
From the tool's definition Tool name 'get_coin_price' and description '获取指定虚拟币的当前价格' (get the current price of a specified virtual currency) indicate a simple price query operation with no data modification or execution of commands.
Attacks that exploit this kind of access
获取指定虚拟币的当前价格. It is categorised as a Read tool in the Crypto MCP MCP Server, which means it retrieves data without modifying state.
Register the Crypto MCP server in PolicyLayer and add a rule for get_coin_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 Crypto MCP. Nothing to install.
get_coin_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_coin_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_coin_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_coin_price is provided by the Crypto MCP server (kiss-kedaya/crypto_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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