Quick Start

Quantis v3 serves the same Venezuelan exchange-rate data as v2, with the same endpoints and response bodies. What changes is how you get access: API keys are created at center.quantis.vzla.io, and usage is tracked per account under a tier.

Create your API key

Go to center.quantis.vzla.io, sign up with your email and create a key. Copy it immediately: the raw key is shown only once.

Keys look like this:
```
qapi_a1b2c3d4e5f6...
```

Make your first request

Pass your key in the Authorization header:

curl --request GET \
  --url 'https://app.vzla.io/api/quantis/v3/rates/bcv/' \
  --header 'Authorization: Bearer qapi_YOUR_KEY_HERE'

Read the response

A successful response wraps data in the {data, meta} envelope:

{
  "data": {
    "current": {
      "valid_date": "2026-05-06",
      "timestamp": "2026-05-06T09:32:03.108501+00:00",
      "rates": {
        "USD": {
          "rate": "493.37650000",
          "indicator_pct": "0.78066864",
          "indicator_amount": "3.82180000"
        },
        "EUR": { "...": "..." }
      }
    },
    "next": null
  },
  "meta": {
    "source": "BCV",
    "currency_quote": "VES"
  }
}

Base URL

https://app.vzla.io/api/quantis/v3/

Authentication

Every request, including My Quota, must include:

Authorization: Bearer qapi_YOUR_KEY_HERE

Requests without a valid key, or with a key you revoked at center.quantis.vzla.io, return 401 Unauthorized.

Quota and rate limit

Your monthly quota belongs to your account and is shared by all its keys. Every call except My Quota counts 1 request. Every tier also has a per-second rate limit. See Tiers and limits for how both work and how to handle a 429.

Endpoints

Endpoint	What it returns	Cache
`GET /api/quantis/v3/rates/bcv/`	Official BCV rates (USD, EUR, CNY, TRY, RUB)	60 min
`GET /api/quantis/v3/rates/markets/`	USDT Binance rate + AVG + DIFF vs BCV	5 min
`GET /api/quantis/v3/rates/banks/`	Per-bank buy/sell/avg rates	30 min
`GET /api/quantis/v3/rates/international/`	~170 world currencies (USD base)	30 min
`GET /api/quantis/v3/rates/crypto/`	USD prices for BTC, ETH, USDT and more	5 min
`GET /api/quantis/v3/rates/history/`	Last 30 daily closing rates	Until end of day
`GET /api/quantis/v3/holidays/`	Venezuelan bank and public holidays	24 h
`GET /api/quantis/v3/me/quota/`	Your tier and usage (no quota used)	None

Error format

All errors follow a standard envelope. details is only present when there is something to add:

{
  "error": {
    "code": "auth_token_unknown",
    "message": "Invalid token format"
  }
}

Error code	HTTP status	Meaning
`invalid_parameter`	400	A query parameter is invalid, e.g. `year` or `type` on Holidays
`auth_missing`	401	No `Authorization` header sent
`auth_token_unknown`	401	Key unknown, malformed or revoked
`quota_exceeded`	429	Your account’s monthly quota is spent. It resets on the 1st
`throttled`	429	Too many requests per second. Wait the seconds in the `Retry-After` header (also in `details.retry_after`)

Complete documentation as plain text for AI tools (llms.txt)