getMarketKline

ServerBybit MCP Server
CategoryRead

WHAT IT DOES

What getMarketKline does on Bybit MCP Server

AI agents call getMarketKline to retrieve information from Bybit MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

THE RISK

Low Risk

Why getMarketKline needs a policy

This tool retrieves historical market data (OHLCV candlestick data) from the Bybit exchange with no side effects. It is a pure read operation used for technical analysis and chart building. There is no risk of financial loss, data modification, or irreversible actions. Severity is low because misuse would only affect information gathering, not trading or account state.

From the tool's definition Tool description states 'Query historical klines' and 'Retrieve data' — it performs data retrieval only. No modification, deletion, or execution of trades/commands occurs.

Documented attack patterns abuse exactly the kind of access getMarketKline gives an agent:

POLICY

How to control getMarketKline

PolicyLayer is an MCP gateway — it sits between your AI agents and Bybit MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for getMarketKline:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "getMarketKline": {}
  }
}

getMarketKline is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.

Create a free account and register Bybit MCP Server — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

CAP THIS TOOL →

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EXPLORE

Related tools and policies

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Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Data exfiltration → How read access becomes an exfiltration channel when chained with untrusted content.
MCP token cost → What connecting this server costs in context-window tokens on every request.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about getMarketKline

What does the getMarketKline tool do? +

Query historical klines (OHLCV candlestick data) including open, high, low, close, volume, and turnover.\n\nUse this endpoint when you need to:\n- Build price charts with open/high/low/close/volume/turnover data\n- Perform technical analysis on historical market prices\n- Retrieve data for a specific time range using. It is categorised as a Read tool in the Bybit MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on getMarketKline? +

Register the Bybit MCP Server MCP server in PolicyLayer and add a rule for getMarketKline: 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 Bybit MCP Server. Nothing to install.

What risk level is getMarketKline? +

getMarketKline is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit getMarketKline? +

Yes. Add a rate_limit block to the getMarketKline 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.

How do I block getMarketKline completely? +

Set action: deny in the PolicyLayer policy for getMarketKline. 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.

What MCP server provides getMarketKline? +

getMarketKline is provided by the Bybit MCP Server MCP server (bybit-exchange/trading-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Bybit MCP Server tool call.

Start from Bybit MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

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326 Bybit MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.