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Realized volatility

get_volatility
Read-onlyIdempotent

Realized volatility for any Hyperliquid perp: 7-day and 30-day annualized from daily candles, plus today's range in %. A position-sizing input. Costs 0.01 USDC per call (x402, USDC on Solana, Base, Polygon, Arbitrum or Arc).

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
symbolNoUSDT perp symbol e.g. SOLUSDT, BTCUSDT (default SOLUSDT)

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
dataYesthe get_volatility payload; a real captured example is free at https://x402.ochinimus.app/api/sample/get_volatility
toolYesthe tool that produced this payload

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed2 schema fields changed
    • changedInput schema / properties / symbol / description
      Previous value: -"USDT perp symbol e.g. SOLUSDT"New value: +"USDT perp symbol e.g. SOLUSDT, BTCUSDT (default SOLUSDT)"
    • removedInput schema / required
      Removed value: -[
-  "symbol"
-]
  2. Changed1 schema field changed
    • changedOutput schema / (root)
      Previous value: -nullNew value: +{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "additionalProperties": false,
+  "properties": {
+    "data": {
+      "additionalProperties": {},
+      "description": "the get_volatility payload; a real captured example is free at https://x402.ochinimus.app/api/sample/get_volatility",
+      "propertyNames": {
+        "type": "string"
+      },
+      "type": "object"
+    },
+    "tool": {
+      "const": "get_volatility",
+      "description": "the tool that produced this payload",
+      "type": "string"
+    }
+  },
+  "required": [
+    "tool",
+    "data"
+  ],
+  "type": "object"
+}
  3. First observed

TDQS

A3.9/5.0
Behavior4/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Annotations already declare readOnly/idempotent/non-destructive, so the safety bar is met. The description adds genuinely non-obvious behavioral context beyond the annotations: it is a paid endpoint at 0.01 USDC per call via x402, with accepted chains listed. This is exactly the kind of fact an agent must know before invoking. It stops short of describing rate limits or error behavior.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Three compact sentences, front-loaded with what is computed and followed by use context and the cost. No filler; every fragment carries information, though the payment-chain enumeration is slightly dense.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness4/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

An output schema exists, so return values need not be explained, and the description covers scope, computation basis, use case, and payment cost. It is nearly complete for a single-param read tool; only the absence of explicit usage guidance keeps it from a 5.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 100% and the single symbol parameter already documents its format and default (SOLUSDT). The description adds no syntax or format detail beyond the schema, so the baseline 3 applies.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

States a specific resource and verb ('Realized volatility for any Hyperliquid perp') and enumerates the exact outputs: 7-day and 30-day annualized from daily candles plus today's range in %. This lets an agent distinguish it from siblings like get_perp or get_basis without opening a schema.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines3/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The phrase 'A position-sizing input' implies a use context, but there is no explicit when-to-use, when-not-to-use, or named alternative among the many sibling volatility/price tools. Usage is only inferred.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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