Get a list of cryptocurrency assets with their current prices and market data. You can optionally filter by search term, limit results, or offset for pagination.
AI agents call get_assets to retrieve information from CoinCap MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and queries cryptocurrency market data without any side effects. It performs a simple data retrieval operation analogous to a database SELECT query with filter/limit/offset parameters. No financial transactions, code execution, or data modification are involved. The low severity reflects that misuse would only expose publicly available market information already accessible through the CoinCap API.
From the tool's definition Tool description states 'Get a list of cryptocurrency assets' with optional filtering, limiting, and pagination - all read-only query operations. No creation, modification, deletion, or execution capabilities mentioned.
Attacks that exploit this kind of access
Get a list of cryptocurrency assets with their current prices and market data. You can optionally filter by search term, limit results, or offset for pagination. It is categorised as a Read tool in the CoinCap MCP Server MCP Server, which means it retrieves data without modifying state.
Register the CoinCap MCP Server MCP server in PolicyLayer and add a rule for get_assets: 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 CoinCap MCP Server. Nothing to install.
get_assets 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_assets 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_assets. 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_assets is provided by the CoinCap MCP Server MCP server (sanchello69/mcpserver). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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