crypto.defi-fees
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...
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What crypto.defi-fees does on Mcp
AI agents call crypto.defi-fees to retrieve information from Mcp without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Why crypto.defi-fees is rated Low
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
The rule that runs crypto.defi-fees safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Mcp, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For crypto.defi-fees, this is the rule to start with:
crypto.defi-fees is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Mcp, apply this rule, and every crypto.defi-fees call is checked against it from then on.
Questions about crypto.defi-fees
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.
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