get_kline
AI agents call get_kline to retrieve information from Aster Info without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool appears to fetch kline/candlestick price data for crypto markets. Despite the empty description, the naming pattern and server context strongly indicate this is a read-only data retrieval operation with no side effects. No mutation, execution, or financial transaction capability is evident. Confidence is slightly reduced due to missing tool description, but the surrounding context is clear.
From the tool's definition Tool name 'get_kline' and sibling tools (get_index_price_kline, get_mark_price_kline, get_candlesticks, etc.) all retrieve market data from Aster DEX.
Attacks that exploit this kind of access
get_kline. It is categorised as a Read tool in the Aster Info MCP Server, which means it retrieves data without modifying state.
Register the Aster Info MCP server in PolicyLayer and add a rule for get_kline: 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 Aster Info. Nothing to install.
get_kline 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_kline 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_kline. 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_kline is provided by the Aster Info MCP server (kukapay/aster-info-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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