Source: https://cryptanio.com/es/docs/reference/stream-events/
Contract / release / updated: v1 / 1.0.0 62 / 2026-10-10

[Referencia de la API](https://cryptanio.com/es/docs.html#reference)

# Recibir eventos en streaming

GET `/v1/stream`

Contrato v1 / 1.0.0 62 / 2026-10-10

[Markdown](https://cryptanio.com/es/docs/reference/stream-events/index.md) [OpenAPI](https://cryptanio.com/openapi.json)

SSE con event:payment, datos JSON y comentarios de mantenimiento de conexión. Su estructura difiere de webhook v1. Recupera eventos perdidos mediante /events; no se implementa la reproducción Last-Event-ID. EventSource nativo del navegador no permite cabeceras Bearer: usa un cliente de servidor o fetch en streaming, nunca una clave en los parámetros de la URL.

Permisos de la clave: `stream` / read.

## Ejemplos de solicitudes

Los ejemplos realizan una operación real en tu cuenta. Configura las variables de entorno indicadas en el código. Mantén tu clave privada; las solicitudes de escritura no se reintentan automáticamente.



### Shell / cURL

```bash
#!/usr/bin/env bash
set -euo pipefail
: "${CRYPTANIO_API_KEY:?Set CRYPTANIO_API_KEY}"
# A live SSE connection is deliberately limited to 30 seconds.
exec 3>&1
transfer_status=0
http_status="$(curl \
  --silent --show-error --no-buffer --max-time 30 --request GET \
  --header "Authorization: Bearer $CRYPTANIO_API_KEY" \
  --header 'Accept: text/event-stream' \
  "https://api.cryptanio.com/v1/stream" \
  --output /dev/fd/3 --write-out '%{http_code}')" || transfer_status=$?
exec 3>&-
if [[ "$http_status" == 2?? ]]; then
  exit "$transfer_status"
fi
printf 'HTTP %s\n' "$http_status" >&2
exit 1
```



[Descargar ejemplo](https://cryptanio.com/files/examples/api/stream-events.sh)



### Go

```go
// Go; standard library only. Run: go run request.go
package main

import (
    "fmt"
    "io"
    "net/http"
    "net/url"
    "os"
    "time"
)

func env(name string) string {
    value := os.Getenv(name)
    if value == "" { fmt.Fprintln(os.Stderr, "Set", name); os.Exit(1) }
    return value
}
func run() error {
    path := "/v1/stream"

    endpoint, err := url.Parse("https://api.cryptanio.com" + path)
    if err != nil { return err }
    query := endpoint.Query()

    endpoint.RawQuery = query.Encode()

    request, err := http.NewRequest("GET", endpoint.String(), nil)
    if err != nil { return err }
    request.Header.Set("Authorization", "Bearer " + env("CRYPTANIO_API_KEY"))
    request.Header.Set("Accept", "text/event-stream")
    client := &http.Client{Timeout: 30 * time.Second, CheckRedirect: func(*http.Request, []*http.Request) error { return http.ErrUseLastResponse }}
    response, err := client.Do(request)
    if err != nil { return err }
    defer response.Body.Close()
    if response.StatusCode < 200 || response.StatusCode >= 300 {
        body, err := io.ReadAll(response.Body)
        if err != nil { return err }
        return fmt.Errorf("HTTP %d: %s", response.StatusCode, body)
    }
    _, err = io.Copy(os.Stdout, response.Body)
    return err
}
func main() {
    if err := run(); err != nil { fmt.Fprintln(os.Stderr, err); os.Exit(1) }
}
```



[Descargar ejemplo](https://cryptanio.com/files/examples/api/stream-events.go)



### Rust

```rust
// Cargo.toml dependencies:
// reqwest = { version = "=0.12.24", features = ["blocking", "json"] }
// serde_json = "=1.0.145"
use std::{error::Error, io, time::Duration};
use reqwest::{blocking::Client, redirect::Policy, Method, Url};

fn env(name: &str) -> Result<String, Box<dyn Error>> {
    let value = std::env::var(name)?;
    if value.is_empty() { return Err(format!("Set {name}").into()); }
    Ok(value)
}
fn run() -> Result<(), Box<dyn Error>> {
    let mut url = Url::parse("https://api.cryptanio.com")?;
    {
        let mut segments = url.path_segments_mut().map_err(|_| "Invalid base URL")?;
        segments.clear();
        segments.push("v1");
        segments.push("stream");
    }
    let client = Client::builder().timeout(Duration::from_secs(30)).redirect(Policy::none()).build()?;
    let request = client.request(Method::GET, url)
        .header("Authorization", format!("Bearer {}", env("CRYPTANIO_API_KEY")?))
        .header("Accept", "text/event-stream".to_owned());
    let mut response = request.send()?;
    let status = response.status();
    if !status.is_success() { return Err(format!("HTTP {}: {}", status.as_u16(), response.text()?).into()); }
    io::copy(&mut response, &mut io::stdout())?;
    Ok(())
}
fn main() {
    if let Err(error) = run() { eprintln!("{error}"); std::process::exit(1); }
}
```



[Descargar ejemplo](https://cryptanio.com/files/examples/api/stream-events.rs)



### PHP

```php
<?php
// PHP 8 with the cURL extension. Run this on your server.
function env(string $name): string {
    $value = getenv($name);
    if ($value === false || $value === '') throw new RuntimeException('Set ' . $name);
    return $value;
}
try {
    $path = '/v1/stream';

    $query = [

    ];
    $url = 'https://api.cryptanio.com' . $path . ($query ? '?' . http_build_query($query, '', '&', PHP_QUERY_RFC3986) : '');
    $headers = [
        'Authorization: ' . 'Bearer ' . env('CRYPTANIO_API_KEY'),
        'Accept: ' . 'text/event-stream',
    ];
    $errorBody = '';
    $curl = curl_init($url);
    curl_setopt_array($curl, [
        CURLOPT_CUSTOMREQUEST => 'GET',
        CURLOPT_HTTPHEADER => $headers,
        CURLOPT_RETURNTRANSFER => false,
        CURLOPT_FOLLOWLOCATION => false,
        CURLOPT_CONNECTTIMEOUT => 10,
        CURLOPT_TIMEOUT => 30,
        CURLOPT_WRITEFUNCTION => static function ($handle, string $chunk) use (&$errorBody): int {
            $status = curl_getinfo($handle, CURLINFO_HTTP_CODE);
            if ($status >= 200 && $status < 300) { fwrite(STDOUT, $chunk); }
            else { $errorBody .= $chunk; }
            return strlen($chunk);
        },
    ]);
    $response = curl_exec($curl);
    if ($response === false) throw new RuntimeException(curl_error($curl));
    $status = curl_getinfo($curl, CURLINFO_HTTP_CODE);
    if ($status < 200 || $status >= 300) throw new RuntimeException('HTTP ' . $status . ': ' . $errorBody);
} catch (Throwable $error) {
    fwrite(STDERR, $error->getMessage() . PHP_EOL);
    exit(1);
}
```



[Descargar ejemplo](https://cryptanio.com/files/examples/api/stream-events.php)



### Python

```python
# Python 3; standard library only.
import json
import os
import sys
from urllib.error import HTTPError, URLError
from urllib.parse import quote, urlencode
from urllib.request import HTTPRedirectHandler, Request, build_opener

def env(name):
    result = os.environ.get(name)
    if not result:
        raise ValueError("Set " + name)
    return result

class NoRedirect(HTTPRedirectHandler):
    def redirect_request(self, req, fp, code, msg, headers, newurl):
        return None

try:
    path = "/v1/stream"

    query = {

    }
    url = "https://api.cryptanio.com" + path + ("?" + urlencode(query) if query else "")
    headers = {
        "Authorization": "Bearer " + env("CRYPTANIO_API_KEY"),
        "Accept": "text/event-stream",
    }
    data = None
    request = Request(url, data=data, headers=headers, method="GET")
    with build_opener(NoRedirect()).open(request, timeout=30) as response:
        if not 200 <= response.status < 300:
            raise ValueError("HTTP " + str(response.status))
        for line in response:
            sys.stdout.buffer.write(line)
            sys.stdout.buffer.flush()
except HTTPError as error:
    print("HTTP " + str(error.code) + ": " + error.read().decode("utf-8", errors="replace"), file=sys.stderr)
    sys.exit(1)
except (ValueError, URLError, OSError) as error:
    print(str(error), file=sys.stderr)
    sys.exit(1)
```



[Descargar ejemplo](https://cryptanio.com/files/examples/api/stream-events.py)



### Node.js

```javascript
// Node.js 18+. Run on your server, never in a browser.
const env = name => {
  const result = process.env[name];
  if (!result) throw new Error(`Set ${name}`);
  return result;
};
try {
  let path = "/v1/stream";

  const url = new URL(path, "https://api.cryptanio.com");

  const headers = {
    "Authorization": "Bearer " + env("CRYPTANIO_API_KEY"),
    "Accept": "text/event-stream",
  };
  const response = await fetch(url, {
    method: "GET", headers, redirect: "manual",
    signal: AbortSignal.timeout(30_000),
  });
  if (!response.ok) throw new Error(`HTTP ${response.status}: ${await response.text()}`);
  if (response.body) {
    for await (const chunk of response.body) process.stdout.write(chunk);
  }
} catch (error) {
  console.error(error.message);
  process.exitCode = 1;
}
```



[Descargar ejemplo](https://cryptanio.com/files/examples/api/stream-events.mjs)

## Respuestas y errores

### 200 Flujo Server-Sent Events.

text/event-stream

### 401 No hay una clave API activa válida (unauthorized).

| Campo | Tipo | Obligatorio | Descripción |
| --- | --- | --- | --- |
| `error` | `object` | Sí |  |



### 401 application/json

```json
{
  "error": {
    "code": "forbidden",
    "message": "this API key is read-only"
  }
}
```



### 403 La clave no permite la operación, el proyecto, el servicio o la IP; correo sin confirmar.

| Campo | Tipo | Obligatorio | Descripción |
| --- | --- | --- | --- |
| `error` | `object` | Sí |  |



### 403 application/json

```json
{
  "error": {
    "code": "forbidden",
    "message": "this API key is read-only"
  }
}
```



### 429 Demasiadas solicitudes (rate_limited); reintenta después de Retry-After.

| Campo | Tipo | Obligatorio | Descripción |
| --- | --- | --- | --- |
| `error` | `object` | Sí |  |



### 429 application/json

```json
{
  "error": {
    "code": "forbidden",
    "message": "this API key is read-only"
  }
}
```



### 500 Error interno (internal).

| Campo | Tipo | Obligatorio | Descripción |
| --- | --- | --- | --- |
| `error` | `object` | Sí |  |



### 500 application/json

```json
{
  "error": {
    "code": "forbidden",
    "message": "this API key is read-only"
  }
}
```



### 503 Indisponibilidad temporal (unavailable); reintenta con espera progresiva.

| Campo | Tipo | Obligatorio | Descripción |
| --- | --- | --- | --- |
| `error` | `object` | Sí |  |



### 503 application/json

```json
{
  "error": {
    "code": "forbidden",
    "message": "this API key is read-only"
  }
}
```



[Gestión de errores y reintentos seguros](https://cryptanio.com/es/docs.html#errors)

## Objetos anidados

### `StreamEvent`

JSON en los datos SSE; difiere de webhook v1. Los eventos sin pago omiten payment y pueden incluir contract.

| Campo | Tipo | Obligatorio | Descripción |
| --- | --- | --- | --- |
| `event_id` | `string` | Sí | Identificador opaco; consérvalo como cadena.; minLength: `1` |
| `event_type` | `string` | Sí | Tipo de evento; pueden añadirse nuevos tipos. |
| `chain` | `string` | Sí | Código de red. |
| `service` | `string` | No | Servicio, si se conoce. |
| `watch_id` | `string` | No | ID de vigilancia del proyecto, si está vinculado a una vigilancia.; minLength: `1` |
| `occurred_at` | `string` | Sí | Fecha y hora UTC en RFC 3339.; `date-time` |
| `payment` | `object \| null` | No | Documento de pago, o null para un evento sin pago. GET /events no devuelve contenidos contract/notice. |
| `sandbox` | `boolean` | No | Evento de prueba; la omisión significa false. |
| `project_id` | `string` | No | Identificador opaco; consérvalo como cadena.; minLength: `1` |
| `project_name` | `string` | No | Nombre del proyecto. |
| `url` | `string` | No | Enlace al evento de Account.; `uri` |
| `contract` | `object` | No |  |
| `mode` | `string` | No | live o test.; `live`, `test` |

### `ID`

Identificador opaco. Su formato no está garantizado; no lo conviertas a número.

`string` Identificador opaco. Su formato no está garantizado; no lo conviertas a número.

### `EventPayment`

Documento de pago REST/SSE. Los campos dependen del evento y la red; no es la estructura normalizada de webhook v1.

| Campo | Tipo | Obligatorio | Descripción |
| --- | --- | --- | --- |
| `tx_id` | `string` | No | Identificador de transacción. |
| `index` | `integer` | No | Índice de transferencia dentro de la transacción.; minimum: `0` |
| `height` | `integer` | No | Altura del bloque, cuando se conoce.; minimum: `0` |
| `address` | `string` | No | Dirección observada. |
| `asset` | `string` | No | Activo REST/SSE: identificador de cadena, no el objeto asset del webhook. |
| `amount_raw` | `string` | No | Importe entero en la unidad mínima como cadena.; pattern: `^[0-9]+$` |
| `amount` | `string` | No | Importe decimal exacto como cadena; no uses coma flotante.; pattern: `^[0-9]+(?:\.[0-9]+)?$` |
| `decimals` | `integer` | No | Decimales.; minimum: `0` |
| `confirmations` | `integer` | No | Confirmaciones.; minimum: `0` |
| `revision` | `integer` | No | Revisión del estado de transferencia.; minimum: `0` |
| `direction` | `string` | No | Dirección respecto a la dirección observada.; `in`, `out` |
| `simulated` | `boolean` | No | Evento simulado. |
| `late` | `boolean` | No | Transferencia detectada tarde. |
| `block_hash` | `string` | No | Hash del bloque. |
| `match_key` | `string` | No | Identificador de coincidencia, cuando lo utiliza la red. |
| `meta` | `object` | No |  |
| `invoice` | `object` | No |  |
| `customer` | `object` | No |  |
| `product` | `object` | No |  |
| `payer` | `object` | No |  |
| `metadata` | `object` | No |  |

### `RawAmount`

`string`

### `Decimal`

`string`

### `StringMap`

`object`

### `Customer`

| Campo | Tipo | Obligatorio | Descripción |
| --- | --- | --- | --- |
| `id` | `string` | Sí | Identificador del cliente en tu sistema.; maxLength: `120` |

### `Product`

| Campo | Tipo | Obligatorio | Descripción |
| --- | --- | --- | --- |
| `id` | `string` | No | Identificador del producto en tu sistema.; maxLength: `120` |
| `name` | `string` | No | Nombre del producto.; maxLength: `200` |
| `quantity` | `integer` | No | Cantidad.; minimum: `1`; maximum: `1000000` |

### `Payer`

| Campo | Tipo | Obligatorio | Descripción |
| --- | --- | --- | --- |
| `comment` | `string` | Sí | Comentario del pagador.; maxLength: `500` |

### `Error`

| Campo | Tipo | Obligatorio | Descripción |
| --- | --- | --- | --- |
| `error` | `object` | Sí |  |