AI agents call scan_market to retrieve information from Bybit Ws without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves market data and generates analytical signals (LONG/SHORT candidate scores) without modifying positions, executing trades, or causing any irreversible changes. It is purely informational scanning with no operational impact on accounts or orders.
From the tool's definition Tool performs market scanning and retrieval of trading signals/scores with no side effects. Description states 'Scan market for Bollinger Grid signals' indicating data retrieval only.
Attacks that exploit this kind of access
Scan market for Bollinger Grid signals (LONG/SHORT candidates with scores). It is categorised as a Read tool in the Bybit Ws MCP Server, which means it retrieves data without modifying state.
Register the Bybit Ws MCP server in PolicyLayer and add a rule for scan_market: 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 Ws. Nothing to install.
scan_market 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 scan_market 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 scan_market. 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.
scan_market is provided by the Bybit Ws MCP server (poliakarmai/bybit-ws). 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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