Total value locked (TVL) and recent changes for a DeFi protocol via DeFiLlama
AI agents call get_protocol_tvl to retrieve information from Agenti without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and queries data about DeFi protocol metrics with no side effects or ability to modify state, move funds, or execute code. It is purely informational, analogous to a 'get' or 'fetch' operation. The server context mentions spending and receiving cryptocurrency, but this specific tool only reads TVL data, making it a Read-category risk.
From the tool's definition Tool name 'get_protocol_tvl' and description 'Total value locked (TVL) and recent changes for a DeFi protocol via DeFiLlama' indicate retrieval of blockchain/DeFi metric data via an external API.
Documented attack patterns abuse exactly the kind of access get_protocol_tvl gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Agenti, and nothing reaches the server without passing your rules. This is the rule we recommend for get_protocol_tvl:
{
"version": "1",
"default": "deny",
"tools": {
"get_protocol_tvl": {}
}
}get_protocol_tvl is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Total value locked (TVL) and recent changes for a DeFi protocol via DeFiLlama. It is categorised as a Read tool in the Agenti MCP Server, which means it retrieves data without modifying state.
Register the Agenti MCP server in PolicyLayer and add a rule for get_protocol_tvl: 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 Agenti. Nothing to install.
get_protocol_tvl 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 get_protocol_tvl 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 get_protocol_tvl. 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.
get_protocol_tvl is provided by the Agenti MCP server (nirholas/agenti). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 73 Agenti tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
73 Agenti tools catalogued and risk-classified — across an index of 42,500+ MCP servers.