Returns latest cryptocurrency news and Alexandria articles.
AI agents call contentLatest to retrieve information from CoinMarketCap MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool queries and retrieves published content (news and articles) from CoinMarketCap's Alexandria section. This is a read-only operation with no side effects, no code execution capability, and no data modification. The blast radius of misuse is minimal—an agent could only retrieve information that is already publicly available. No financial transactions, data destruction, or command execution is involved.
From the tool's definition Tool description states it 'Returns latest cryptocurrency news and Alexandria articles' - a retrieval operation with no modification or execution of external systems.
Documented attack patterns abuse exactly the kind of access contentLatest gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and CoinMarketCap MCP, and nothing reaches the server without passing your rules. This is the rule we recommend for contentLatest:
{
"version": "1",
"default": "deny",
"tools": {
"contentLatest": {}
}
}contentLatest is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Returns latest cryptocurrency news and Alexandria articles. It is categorised as a Read tool in the CoinMarketCap MCP MCP Server, which means it retrieves data without modifying state.
Register the CoinMarketCap MCP server in PolicyLayer and add a rule for contentLatest: 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 CoinMarketCap MCP. Nothing to install.
contentLatest 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 contentLatest 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 contentLatest. 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.
contentLatest is provided by the CoinMarketCap MCP server (shinzo-labs/coinmarketcap-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 51 CoinMarketCap MCP tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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51 CoinMarketCap MCP tools catalogued and risk-classified — across an index of 42,500+ MCP servers.