Returns the lastest CoinMarketCap 100 Index value, constituents, and constituent weights.
AI agents call cmc100IndexLatest 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.
This tool retrieves cryptocurrency market index data without any side effects. It queries and returns information about the CMC 100 Index constituents and their weights. There is no capability to modify, delete, execute code, or trigger financial transactions. This is a straightforward read operation with minimal risk if misused by an AI agent — the worst case is accessing market data that is already public.
From the tool's definition Tool name 'cmc100IndexLatest' and description states it 'Returns the latest CoinMarketCap 100 Index value, constituents, and constituent weights' — purely a data retrieval operation with no modification, deletion, or execution capability.
Documented attack patterns abuse exactly the kind of access cmc100IndexLatest 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 cmc100IndexLatest:
{
"version": "1",
"default": "deny",
"tools": {
"cmc100IndexLatest": {}
}
}cmc100IndexLatest is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
Free to start. No card required.
Returns the lastest CoinMarketCap 100 Index value, constituents, and constituent weights. 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 cmc100IndexLatest: 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.
cmc100IndexLatest 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 cmc100IndexLatest 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 cmc100IndexLatest. 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.
cmc100IndexLatest 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.
Free to start. No card required.
51 CoinMarketCap MCP tools catalogued and risk-classified — across an index of 42,500+ MCP servers.