获取 Binance K线数据（技术分析所需）
AI agents call get_ohlcv to retrieve information from Crypto MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This is a data retrieval tool that queries historical candlestick/OHLCV data from Binance for read-only technical analysis purposes. It has no side effects, does not modify state, and does not trigger trades or financial transactions. It fits the 'Read' category as a market data query endpoint with low risk.
From the tool's definition Tool description states it retrieves 'Binance K线数据' (K-line/OHLCV candlestick data) for technical analysis. No modification, deletion, execution, or financial transaction occurs.
Attacks that exploit this kind of access
获取 Binance K线数据（技术分析所需）. It is categorised as a Read tool in the Crypto MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Crypto MCP Server MCP server in PolicyLayer and add a rule for get_ohlcv: 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 Server. Nothing to install.
get_ohlcv 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_ohlcv 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_ohlcv. 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_ohlcv is provided by the Crypto MCP Server MCP server (williamning316/crypto-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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