AI agents call cmc_listings 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 |
|---|---|---|---|
limit | number | — | |
api_key | string | — | |
convert | string | — |
Parameters from the server's own tool schema.
This tool fetches cryptocurrency market data from CoinMarketCap. The verb 'Get' and the read-only nature of querying listings indicates no state changes, no code execution, and no financial transactions occur. Risk is minimal; misuse would only expose public market data already available elsewhere.
From the tool's definition Tool description states 'Get latest cryptocurrency listings' — a query operation that retrieves data without modification or side effects.
Risk signalsHandles credentials or secrets (api_key)
Attacks that exploit this kind of access
Get latest cryptocurrency listings from CoinMarketCap. It is categorised as a Read tool in the UnClick MCP Server, which means it retrieves data without modifying state.
cmc_listings accepts 3 parameters: limit, api_key, convert. 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 cmc_listings: 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.
cmc_listings 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 cmc_listings 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 cmc_listings. 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.
cmc_listings 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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