Get the Crypto Fear & Greed Index, a market sentiment indicator ranging from 0 (Extreme Fear) to 100 (Extreme Greed). Includes historical comparison and market interpretation.
AI agents call getFearGreedIndex to retrieve information from Boosty MCP DeFi Platform 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 publicly available market sentiment indicator data. It performs a simple data lookup operation without any write, execute, destructive, or financial operations. While it operates in a DeFi context, the tool itself only reads information and does not commit funds, execute trades, or modify any state. The low severity reflects that misuse results only in obtaining market analysis data.
From the tool's definition Tool name 'getFearGreedIndex' and description 'Get the Crypto Fear & Greed Index' indicates retrieval of market sentiment data with no modification, creation, or deletion of data. No side effects or state changes occur.
Documented attack patterns abuse exactly the kind of access getFearGreedIndex gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Boosty MCP DeFi Platform, and nothing reaches the server without passing your rules. This is the rule we recommend for getFearGreedIndex:
{
"version": "1",
"default": "deny",
"tools": {
"getFearGreedIndex": {}
}
}getFearGreedIndex 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.
Get the Crypto Fear & Greed Index, a market sentiment indicator ranging from 0 (Extreme Fear) to 100 (Extreme Greed). Includes historical comparison and market interpretation. It is categorised as a Read tool in the Boosty MCP DeFi Platform MCP Server, which means it retrieves data without modifying state.
Register the Boosty MCP DeFi Platform MCP server in PolicyLayer and add a rule for getFearGreedIndex: 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 Boosty MCP DeFi Platform. Nothing to install.
getFearGreedIndex 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 getFearGreedIndex 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 getFearGreedIndex. 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.
getFearGreedIndex is provided by the Boosty MCP DeFi Platform MCP server (nirholas/boosty). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Boosty MCP DeFi Platform, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
80 Boosty MCP DeFi Platform tools catalogued and risk-classified — across an index of 43,000+ MCP servers.