Protocol fees/revenue or DEX trading volume leaderboards (via DefiLlama, free/keyless). kind=fees ranks protocols by fees generated; kind=dexs ranks DEXes by trading volume. Each row has 24h/7d/30d/1y totals + 1-month change, plus catalog totals. Sort by total24h/7d/30d. The protocol-economics la...
AI agents call crypto.defi-fees to retrieve information from Mcp without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs data retrieval and querying operations only. It returns historical financial metrics and rankings from a public blockchain analytics source with no capability to modify state, execute transactions, or trigger external operations. The mention of 'protocol-economics layer' confirms it is an informational/analytical layer.
From the tool's definition Tool description explicitly states it retrieves 'Protocol fees/revenue or DEX trading volume leaderboards' and 'ranks protocols by fees generated; kind=dexs ranks DEXes by trading volume.' It fetches historical data (24h/7d/30d/1y totals) and supports sorting.
Attacks that exploit this kind of access
Protocol fees/revenue or DEX trading volume leaderboards (via DefiLlama, free/keyless). kind=fees ranks protocols by fees generated; kind=dexs ranks DEXes by trading volume. Each row has 24h/7d/30d/1y totals + 1-month change, plus catalog totals. Sort by total24h/7d/30d. The protocol-economics layer. It is categorised as a Read tool in the Mcp MCP Server, which means it retrieves data without modifying state.
Register the MCP server in PolicyLayer and add a rule for crypto.defi-fees: 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 Mcp. Nothing to install.
crypto.defi-fees 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.defi-fees 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.defi-fees. 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.defi-fees is provided by the MCP server (@2sio/mcp). 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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