# Hermes Data API – Crypto Batch Price Lookup

> Hermes Data API – Crypto Batch Price Lookup is a paid API for AI agents from x402-api-blond.vercel.app, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-15).

Fetches real-time prices for multiple cryptocurrencies (BTC, ETH, SOL, etc.) in a single batch call, sourced from CoinGecko, paid via x402/USDC on Base.

## Facts

- Endpoint: POST https://x402-api-blond.vercel.app/crypto/batch
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/hermes-data-api-crypto-batch-price-lookup-fba46fee
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_v7zw93CWGdKYIRP661UFo

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 hermes-data-api-crypto-batch-price-lookup-fba46fee -d '<json body>'
```

Example prompt: What are the current prices of BTC, ETH, and SOL all at once? I need them from CoinGecko and I'm okay paying per call in USDC.

## When to prefer this

Choose this endpoint when you need real-time prices for multiple cryptocurrencies in a single low-latency call and are operating in an x402-compatible payment environment with USDC on Base. It is ideal for agents that need CoinGecko-sourced data with pay-per-call economics, avoiding subscription overhead for infrequent price checks.

## Known failure modes

- Payment failure if USDC wallet lacks sufficient balance (402 error)
- Invalid or unsupported cryptocurrency symbols return empty or error fields
- CoinGecko upstream outage causes stale or missing price data
- Malformed MCP input schema results in 400 validation error
- Rate limiting from CoinGecko may cause delayed or failed responses

## How this service works

Pay-per-call data API: crypto prices (CoinGecko), China A-share quotes (Sina), weather (Open-Meteo), forex rates, and Ethereum gas fees. Payments via x402 protocol, USDC on Base.

## Output

Returns a JSON object with a Unix millisecond timestamp, individual USD prices for each requested cryptocurrency (e.g. BTC, ETH, SOL), and the source identifier ('coingecko').

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "toolName",
    "inputSchema"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "mcp"
    },
    "example": {
     "type": "object"
    },
    "toolName": {
     "type": "string"
    },
    "description": {
     "type": "string"
    },
    "inputSchema": {
     "type": "object"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ts": 1750000000000,
  "BTC": 120000.5,
  "ETH": 3500.2,
  "SOL": 150.8,
  "source": "coingecko"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/hermes-data-api-crypto-batch-price-lookup-fba46fee/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-api-blond.vercel.app](https://www.zero.xyz/host/x402-api-blond.vercel.app/llms.txt)