watchers.fear-greed

WATCHER: get a signed callback when the Crypto Fear & Greed index crosses a level (e.g. drops into Extreme Fear). Arm once, pay once. conditionType \

SERVERMcp SOURCE@2sio/mcp

Critical RISK CLASS

Category Financial

Parameters 00 required

Recommended Approval-gatedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/io-github-2s-io-mcp/watchers.fear-greed.md

WHAT IT DOES

What watchers.fear-greed does on Mcp

AI agents use watchers.fear-greed to commit financial operations through Mcp, usually the final step of a payment, billing, or trading workflow. A call moves real money.

RISK

Why watchers.fear-greed is rated Critical

This tool involves a financial transaction — it charges USDC per invocation as part of the x402 pay-per-call mechanism. While the tool's primary function is a monitoring/read operation (watching the Fear & Greed index), every invocation commits a financial obligation (payment in USDC on Base or Solana). Per the rules, Financial outranks all other categories.

From the tool's definition pay-per-call tools settled in USDC on Base or Solana via x402... Arm once, pay once

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs watchers.fear-greed 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 watchers.fear-greed, this is the rule to start with:

watchers.fear-greed Approval-gated

Any call to watchers.fear-greed is blocked until a human approves it. The rest of the server keeps working.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "watchers.fear-greed": {
      "deny_if": [
        {
          "conditions": [],
          "on_deny": "Requires human approval."
        }
      ]
    }
  }
}

GATE THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Mcp, apply this rule, and every watchers.fear-greed call is checked against it from then on.

FAQ

Questions about watchers.fear-greed

What does the watchers.fear-greed tool do? +

WATCHER: get a signed callback when the Crypto Fear & Greed index crosses a level (e.g. drops into Extreme Fear). Arm once, pay once. conditionType \. It is categorised as a Financial tool in the Mcp MCP Server, which means it involves financial transactions. Block by default and require explicit approval.

How do I enforce a policy on watchers.fear-greed? +

Register the MCP server in PolicyLayer and add a rule for watchers.fear-greed: 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.

What risk level is watchers.fear-greed? +

watchers.fear-greed is a Financial tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.

Can I rate-limit watchers.fear-greed? +

Yes. Add a rate_limit block to the watchers.fear-greed 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 watchers.fear-greed completely? +

Set action: deny in the PolicyLayer policy for watchers.fear-greed. 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 watchers.fear-greed? +

watchers.fear-greed 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.

KEEP EXPLORING

More on , and thousands of servers like it.

This server

All 572 tools → Critical-risk tools on this server →

Across the catalogue

All critical-risk MCP tools → The MCP Attack Database →

Guides

Govern MCP payment tools →Human-in-the-loop →Tool call approval →