This record as markdown: /tools/bybit-exchange-trading-mcp/subscribedcp.md
What subscribeDcp does on Bybit MCP Server
AI agents call subscribeDcp to retrieve information from Bybit MCP Server without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Why subscribeDcp is rated Low
Subscribing to DCP (likely a market data stream) is a Read operation that retrieves real-time information with no side effects. While authentication is required, the tool does not execute trades, modify positions, transfer funds, or delete data. The blast radius of accidental misuse is low—an agent subscribing to unwanted data streams causes no financial or operational harm.
From the tool's definition Tool name 'subscribeDcp' indicates subscription to data streams; description translates to 'Subscribe to DCP changes (requires authentication)' — suggests real-time data subscription rather than action execution.
Attacks that exploit this kind of access
The rule that runs subscribeDcp safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Bybit MCP Server, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For subscribeDcp, this is the rule to start with:
subscribeDcp 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 Bybit MCP Server, apply this rule, and every subscribeDcp call is checked against it from then on.
Questions about subscribeDcp
订阅 DCP 变动(需要鉴权). It is categorised as a Read tool in the Bybit MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Bybit MCP Server MCP server in PolicyLayer and add a rule for subscribeDcp: 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.
subscribeDcp 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 subscribeDcp 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 subscribeDcp. 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.
subscribeDcp 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.
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