This record as markdown: /tools/281287994w-art-itick-mcp-server/single-kline.md
What single_kline does on Itick
AI agents call single_kline to retrieve information from Itick without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Why single_kline is rated Low
K-line (candlestick) data is historical/current price information queried from a market data API. This is a Read operation—it retrieves data with no side effects, does not modify state, and poses minimal risk if misused by an AI agent (worst case: excessive API calls). The empty tool description slightly reduces confidence, but the server context and sibling tools clearly indicate data retrieval only.
From the tool's definition Tool name 'single_kline' and sibling tools ('batch_klines', 'batch_quotes', 'batch_ticks', 'batch_depths') all retrieve market data.
Attacks that exploit this kind of access
The rule that runs single_kline safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Itick, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For single_kline, this is the rule to start with:
single_kline is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Itick, apply this rule, and every single_kline call is checked against it from then on.
Questions about single_kline
single_kline is a read tool on the Itick MCP server. It is categorised as a Read tool in the Itick MCP Server, which means it retrieves data without modifying state.
Register the Itick MCP server in PolicyLayer and add a rule for single_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 Itick. Nothing to install.
single_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 single_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 single_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.
single_kline is provided by the Itick MCP server (281287994w-art/itick-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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