# Vextorium Crypto Price (On-Chain)

> Vextorium Crypto Price (On-Chain) is a paid API for AI agents from api.vextorium.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-01).

Returns the current price of a cryptocurrency or Base token in USD and EUR, sourced exclusively from on-chain data (Chainlink oracles or Uniswap v3) plus ECB FX rate.

## Facts

- Endpoint: POST https://api.vextorium.com/precio-cripto-pago?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-01
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/vextorium-crypto-price-on-chain-c8cd8a95
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_UT7QEXEirXZ_mxHW5hZJt

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 vextorium-crypto-price-on-chain-c8cd8a95 -d '<json body>'
```

Example prompt: What's the current on-chain price of Ethereum in USD and EUR right now? Use Chainlink oracle data.

## When to prefer this

Choose this endpoint when you need a trustless, decentralized price source for BTC, ETH, USDC, USDT, DAI, or any arbitrary ERC-20 token on Base — especially when you cannot rely on centralized exchange APIs (e.g. CoinGecko, Binance). Ideal for DeFi apps, on-chain settlement calculations, or compliance workflows requiring auditable price provenance. Prefer it over CEX APIs when regulatory or trust requirements demand on-chain sourcing.

## Known failure modes

- Token symbol not recognized and not a valid Base contract address — returns null prices
- Token address exists but has no Uniswap v3 pool on Base — lookup fails or returns null
- Low liquidity on Uniswap v3 pool causing unreliable price quote — advisory notice included in response
- ECB rate unavailable causing EUR price to be null
- Chainlink feed temporarily stale — price returned with staleness warning

## How this service works

Crypto price in USD and EUR from on-chain sources only: Chainlink oracles (BTC, ETH, USDC) or Uniswap v3 quotes on Base (USDT, DAI or any Base token address); EUR via ECB rate.

## Output

Returns a JSON object containing the token's price in USD and EUR (as numbers), the data source used (e.g. Chainlink, Uniswap v3), the token name, the UTC timestamp of the last update, and an optional advisory notice string (e.g. if liquidity is low or the source has caveats).

## 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",
    "bodyType",
    "body"
   ],
   "properties": {
    "body": {
     "required": [
      "moneda"
     ],
     "properties": {
      "moneda": {
       "type": "string",
       "description": "bitcoin, ethereum, usdc, usdt, dai, or a Base token address"
      }
     }
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "aviso": {
       "type": [
        "string",
        "null"
       ]
      },
      "fuente": {
       "type": [
        "string",
        "null"
       ]
      },
      "nombre": {
       "type": [
        "string",
        "null"
       ]
      },
      "precio_eur": {
       "type": [
        "number",
        "null"
       ]
      },
      "precio_usd": {
       "type": [
        "number",
        "null"
       ]
      },
      "actualizado_utc": {
       "type": [
        "string",
        "null"
       ]
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/vextorium-crypto-price-on-chain-c8cd8a95/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.vextorium.com](https://www.zero.xyz/host/api.vextorium.com/llms.txt)