AI agents call crypto_top_coins to retrieve information from UnClick without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
| Parameter | Type | Required | Description |
|---|---|---|---|
page | number | — | |
per_page | number | — | |
vs_currency | string | — |
Parameters from the server's own tool schema.
This tool performs a read-only query to fetch cryptocurrency market data. It retrieves information (top coins by market cap) from an external API without creating, modifying, deleting, or executing any operations. The action is informational only with no blast radius if misused by an AI agent.
From the tool's definition Tool description states 'Get top cryptocurrencies by market cap from CoinGecko' - a query operation that retrieves and displays data without modification or side effects.
Attacks that exploit this kind of access
Get top cryptocurrencies by market cap from CoinGecko. It is categorised as a Read tool in the UnClick MCP Server, which means it retrieves data without modifying state.
crypto_top_coins accepts 3 parameters: page, per_page, vs_currency. The full parameter table on this page comes from the server's own tool schema.
Register the UnClick MCP server in PolicyLayer and add a rule for crypto_top_coins: 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 UnClick. Nothing to install.
crypto_top_coins 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 crypto_top_coins 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 crypto_top_coins. 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.
crypto_top_coins is provided by the UnClick MCP server (@unclick/mcp-server). 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.
Teams ship this data inside their own products. See what a licence covers →