AI agents call crypto_price 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 |
|---|---|---|---|
ids | string | Yes | Comma-separated coin IDs |
vs_currencies | string | — | Comma-separated currency codes |
Parameters from the server's own tool schema.
This tool retrieves public market data from an external API (CoinGecko) without modifying, deleting, or executing any operations. It has no blast radius if misused by an AI agent—the worst outcome is stale or incorrect price data being returned. Classification as Read is appropriate.
From the tool's definition Tool name 'crypto_price' and description 'Get cryptocurrency prices from CoinGecko' indicate a data retrieval operation with no side effects. The verb 'Get' and the singular purpose of retrieving price information confirm this is a query-only action.
Attacks that exploit this kind of access
Get cryptocurrency prices from CoinGecko. It is categorised as a Read tool in the UnClick MCP Server, which means it retrieves data without modifying state.
crypto_price accepts 2 parameters: ids, vs_currencies. Required: ids. 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_price: 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_price 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_price 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_price. 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_price 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.
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