get_kline

Get historical candlestick/OHLC data for technical analysis. Returns open, high, low, close prices and volume data. If no time range specified, returns recent data ending at current time.

ServerBybit MCP Server
CategoryRead

How to control get_kline ↓

WHAT IT DOES

What get_kline does on Bybit MCP Server

AI agents call get_kline 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 get_kline needs a policy

This tool only queries and returns historical market data (OHLC candlestick information). It performs no write operations, executes no code, deletes nothing, and moves no money. Even in a financial trading context, reading market data poses minimal risk as it cannot directly cause financial harm or unintended trades. The blast radius of misuse is limited to potential information leakage or API rate limiting.

From the tool's definition Tool is described as 'Get historical candlestick/OHLC data' which retrieves price data without side effects. The term 'Get' and the purpose for 'technical analysis' indicate pure data retrieval with no modifications to account state, positions, or balances.

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

POLICY

How to control get_kline

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 get_kline:

policy.json

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

get_kline 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.

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EXPLORE

Related tools and policies

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Go deeper

Roll out MCP under one policy → Per-person scoped tokens, one central policy, and full audit across every server your team connects.
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 →
PolicyLayer vs alternatives → How deterministic, per-call MCP policy compares with gateways, identity layers, and authorisation platforms.

FAQ

Questions about get_kline

What does the get_kline tool do? +

Get historical candlestick/OHLC data for technical analysis. Returns open, high, low, close prices and volume data. If no time range specified, returns recent data ending at current time. 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 get_kline? +

Register the Bybit MCP Server 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 Bybit MCP Server. Nothing to install.

What risk level is get_kline? +

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

Can I rate-limit get_kline? +

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.

How do I block get_kline completely? +

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.

What MCP server provides get_kline? +

get_kline is provided by the Bybit MCP Server MCP server (bcusack/bybit-py-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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