get_defi_health

Assess DeFi ecosystem health: total TVL, TVL trends, top chains and protocols, health score, revenue trends, and ecosystem concentration risk.

SERVERFathom Fyi SOURCE0xhashy/fathom-fyi

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade C, identity unverified Pull the record →

This record as markdown: /tools/0xhashy-fathom-fyi/get-defi-health.md

WHAT IT DOES

What get_defi_health does on Fathom Fyi

AI agents call get_defi_health to retrieve information from Fathom Fyi without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why get_defi_health is rated Low

This tool queries and analyzes DeFi metrics to inform decision-making. It retrieves observational data about ecosystem state with no side effects or irreversible actions. Even though the server's stated purpose is 'Financial intelligence for AI agents' and risk of bad trades exists, the tool itself only gathers information; the financial risk lies upstream in how agents use this data, not in the tool's operation.

From the tool's definition Tool name 'get_defi_health' and description explicitly retrieves and assesses data: 'total TVL, TVL trends, top chains and protocols, health score, revenue trends, and ecosystem concentration risk.' No creation, modification, deletion, or execution of…

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs get_defi_health safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Fathom Fyi, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For get_defi_health, this is the rule to start with:

get_defi_health Allowed

get_defi_health is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "get_defi_health": {}
  }
}

ALLOW ONLY THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Fathom Fyi, apply this rule, and every get_defi_health call is checked against it from then on.

FAQ

Questions about get_defi_health

What does the get_defi_health tool do? +

Assess DeFi ecosystem health: total TVL, TVL trends, top chains and protocols, health score, revenue trends, and ecosystem concentration risk. It is categorised as a Read tool in the Fathom Fyi MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on get_defi_health? +

Register the Fathom Fyi MCP server in PolicyLayer and add a rule for get_defi_health: 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 Fathom Fyi. Nothing to install.

What risk level is get_defi_health? +

get_defi_health is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit get_defi_health? +

Yes. Add a rate_limit block to the get_defi_health 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.

How do I block get_defi_health completely? +

Set action: deny in the PolicyLayer policy for get_defi_health. 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.

What MCP server provides get_defi_health? +

get_defi_health is provided by the Fathom Fyi MCP server (0xhashy/fathom-fyi). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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