Get all available currencies (underlying assets) on the platform.
AI agents call get_currencies 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 queries and returns a list of available currencies/assets. It performs a simple data retrieval without modifying, creating, deleting, or executing any operations. It has no financial impact and no capability to affect account state or execute transactions. The low severity reflects the minimal blast radius—an AI agent misusing this tool can only retrieve informational data about available assets.
From the tool's definition Tool name is 'get_currencies' and description states 'Get all available currencies (underlying assets) on the platform.' This is a retrieval operation with no side effects.
Attacks that exploit this kind of access
Get all available currencies (underlying assets) on the platform. 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_currencies: 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_currencies 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_currencies 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_currencies. 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_currencies 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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