Get real-time ticker data for a single instrument (bid/ask, last price, 24h volume, Greeks for options).
AI agents call get_ticker to retrieve information from Derive MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs a simple data query operation retrieving real-time market ticker information. It has no ability to modify, execute, delete, or commit financial transactions. Even though the server provides financial trading capabilities, this specific tool is purely informational/read-only. The low severity reflects minimal blast radius—misuse only returns market data that is publicly available.
From the tool's definition Tool description states 'Get real-time ticker data' which retrieves market information (bid/ask, last price, 24h volume, Greeks) without any side effects or state modification.
Attacks that exploit this kind of access
Get real-time ticker data for a single instrument (bid/ask, last price, 24h volume, Greeks for options). It is categorised as a Read tool in the Derive MCP MCP Server, which means it retrieves data without modifying state.
Register the Derive MCP server in PolicyLayer and add a rule for get_ticker: 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 Derive MCP. Nothing to install.
get_ticker 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 get_ticker 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 get_ticker. 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.
get_ticker is provided by the Derive MCP server (solenyaresearch0000/derive-mcp). 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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