# AgentData API — Crypto Volatility Endpoint

> AgentData API — Crypto Volatility Endpoint is a paid API for AI agents from agentdata-api.com, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-15).

Returns volatility metrics for a specified cryptocurrency asset, paid per-request via USDC micropayment on Base Mainnet with no API key required.

## Facts

- Endpoint: GET https://agentdata-api.com/api/volatility
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agentdata-api-crypto-volatility-endpoint-fb10f18d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_iHuiuLY41vZooz7DFjxdI

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability agentdata-api-crypto-volatility-endpoint-fb10f18d
```

Example prompt: What's the current volatility for ETH? Use the AgentData pay-per-request API — no API key, just pay $0.001 USDC from my Base wallet.

## When to prefer this

Choose this endpoint when an AI agent needs on-demand cryptocurrency volatility data without managing API keys or subscriptions, and the agent has a Base Mainnet wallet capable of USDC micropayments via the x402 protocol. Ideal for autonomous agents operating in DeFi, trading, or risk assessment contexts.

## Known failure modes

- Insufficient USDC balance on Base Mainnet causes payment failure and 402 response
- Unsupported or invalid cryptocurrency symbol returns an error
- Network congestion on Base Mainnet delays payment confirmation
- Malformed POST body missing required asset identifier returns 400
- Service temporarily unavailable returns 503

## How this service works

Pay-per-request crypto market data API for AI agents. 16 endpoints on Base Mainnet via x402 protocol. No accounts, no API keys. USDC micropayments from $0.001. Works with Claude Desktop, ElizaOS, and any MCP client.

## Output

Volatility metrics for the requested cryptocurrency asset, such as historical or implied volatility values, returned as a JSON response after a $0.001 USDC micropayment is processed via the x402 protocol on Base Mainnet.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {}
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "data": {
       "type": "object",
       "properties": {
        "ts": {
         "type": "string"
        },
        "data": {
         "type": "object",
         "additionalProperties": {
          "type": "object",
          "properties": {
           "price": {
            "type": "number"
           },
           "low24h": {
            "type": "number"
           },
           "high24h": {
            "type": "number"
           },
           "range24h": {
            "type": "string"
           },
           "change24h": {
            "type": "string"
           },
           "volatilitySignal": {
            "enum": [
             "LOW",
             "MODERATE",
             "HIGH",
             "EXTREME"
            ],
            "type": "string"
           },
           "annualizedVolatility": {
            "type": "string"
           }
          }
         }
        }
       }
      },
      "success": {
       "type": "boolean"
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agentdata-api-crypto-volatility-endpoint-fb10f18d/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agentdata-api.com](https://www.zero.xyz/host/agentdata-api.com/llms.txt)