---
title: "Documentazione API e CLI: Node, Python, Go e PHP | SingleFax"
description: "Invia fax dal backend con REST API e npm CLI SingleFax. Crediti prepagati, chiavi API, OpenAPI ed esempi curl, Node, Python, Go e PHP."
canonical_url: "https://singlefax.com/it/sviluppatori"
meta:
  "og:description": "Invia fax dal backend con REST API e npm CLI SingleFax. Crediti prepagati, chiavi API, OpenAPI ed esempi curl, Node, Python, Go e PHP."
  "og:image": "https://singlefax.com/_og/s/o_9f2e433adcae4777.jpeg"
  "og:image:alt": "Documentazione API e CLI: Node, Python, Go e PHP"
  "og:image:height": "630"
  "og:image:type": image/jpeg
  "og:image:width": "1200"
  "og:title": "Invia fax dal tuo backend"
---

> Index of every page on this site: [llms.txt](https://singlefax.com/llms.txt)

[singlefax](https://singlefax.com/it)

[Invia e ricevi](https://singlefax.com/it/inviare-un-fax) [Per le aziende](https://singlefax.com/it/per-le-aziende)Soluzioni [Prezzi](https://singlefax.com/it/prezzi) [Blog](https://singlefax.com/it/blog)

<details>

<summary>Lingua</summary>



<a href="https://singlefax.com/developers">English</a><a href="https://singlefax.com/de/entwickler">Deutsch</a><a href="https://singlefax.com/fr/developpeurs">Français</a><a href="https://singlefax.com/es/desarrolladores">Español</a><a href="https://singlefax.com/zh-tw/%E9%96%8B%E7%99%BC%E4%BA%BA%E5%93%A1">繁體中文</a><a href="https://singlefax.com/pt-br/desenvolvedores">Português do Brasil</a><a href="https://singlefax.com/tr/gelistiriciler">Türkçe</a><a href="https://singlefax.com/ko/%EA%B0%9C%EB%B0%9C%EC%9E%90">한국어</a><a href="https://singlefax.com/ja/%E9%96%8B%E7%99%BA%E8%80%85%E5%90%91%E3%81%91">日本語</a><a href="https://singlefax.com/ar/%D8%A7%D9%84%D9%85%D8%B7%D9%88%D8%B1%D9%88%D9%86">العربية</a>

</details>

[Accedi](https://singlefax.com/it/accedi)

REST · CLI · OpenAPI

# Documentazione API e CLI SingleFax

Chiave API e crediti prepagati. CLI ufficiale npm o esempi REST pronti per curl, Node, Python, Go e PHP. Le chat usano invece MCP.

[Crea una chiave API](https://singlefax.com/it/accedi?redirect=/dashboard/api-keys) [npm CLI](https://www.npmjs.com/package/@singlefax/cli) [OpenAPI](https://singlefax.com/openapi.json)

## CLI

`npx @singlefax/cli send FILE --to +E164`, passando Word, Excel, PDF o immagine originali, senza conversione preventiva.

## REST

`POST /api/v1/faxes` con Bearer `sf_live_…` e `Idempotency-Key`.

## MCP per chat

Cursor, Claude, Codex, ChatGPT. OAuth, non chiave API. [Installa MCP](https://singlefax.com/it/agenti-ia).

## Avvio rapido

1. Crea una chiave con permessi limitati su [Chiavi API](https://singlefax.com/it/accedi?redirect=/dashboard/api-keys) ( `fax:send`, `fax:read`, `inbox:read`, `credits:read`).
2. Acquista crediti nel pannello o tramite `npx @singlefax/cli credits buy`.
3. Invia con la CLI sotto o `POST /api/v1/faxes`.

URL base `https://api.singlefax.com` (stessi percorsi su `https://singlefax.com`). Le chiavi `sf_test_` non inviano realmente. Non mettere chiavi nel browser.

## CLI

Node 20+. Configurazione: `SINGLEFAX_API_KEY` o `~/.config/singlefax/config.json`. Passa il file originale (Word, Excel, PowerPoint, PDF, testo o immagine), senza convertirlo prima. Non per MCP OAuth o Stripe MPP.

terminalCopia

```
export SINGLEFAX_API_KEY=sf_live_…

npx @singlefax/cli send ./document.docx --to +14155552671
npx @singlefax/cli send ./document.pdf --to +14155552671 --wait --json
```

quote, status, creditsCopia

```
npx @singlefax/cli quote --to +14155552671 --pages 12
npx @singlefax/cli status <id>
npx @singlefax/cli list
npx @singlefax/cli numbers
npx @singlefax/cli numbers buy
npx @singlefax/cli credits
npx @singlefax/cli credits buy --dollars 20
```

## Invia un fax

Una richiesta: documento base64 e destinazione. PDF, Word, Excel, PowerPoint, testo o immagini. `Idempotency-Key` obbligatorio. Riutilizzare una chiave con corpo diverso restituisce 409.

curlJavaScriptPythonGoPHP

terminalCopia

```
PDF_B64="$(base64 < document.pdf | tr -d '\n')"

curl -sS https://api.singlefax.com/api/v1/faxes \
  -H "Authorization: Bearer $SINGLEFAX_API_KEY" \
  -H "Content-Type: application/json" \
  -H "Idempotency-Key: $(uuidgen)" \
  -d "{\"to\":\"+14155552671\",\"base64\":\"$PDF_B64\"}"
```

send.mjsCopia

```
import { readFile } from 'node:fs/promises'
import { randomUUID } from 'node:crypto'

const api = 'https://api.singlefax.com'
const key = process.env.SINGLEFAX_API_KEY
const pdf = await readFile('./document.pdf')

const res = await fetch(`${api}/api/v1/faxes`, {
  method: 'POST',
  headers: {
    Authorization: `Bearer ${key}`,
    'Content-Type': 'application/json',
    'Idempotency-Key': randomUUID(),
  },
  body: JSON.stringify({
    to: '+14155552671',
    base64: pdf.toString('base64'),
  }),
})
console.log(await res.json())
```

send.pyCopia

```
import base64, json, os, urllib.request, uuid
from pathlib import Path

API = "https://api.singlefax.com"
KEY = os.environ["SINGLEFAX_API_KEY"]
pdf = Path("document.pdf").read_bytes()

req = urllib.request.Request(
    f"{API}/api/v1/faxes",
    data=json.dumps({
        "to": "+14155552671",
        "base64": base64.b64encode(pdf).decode(),
    }).encode(),
    headers={
        "Authorization": f"Bearer {KEY}",
        "Content-Type": "application/json",
        "Idempotency-Key": str(uuid.uuid4()),
    },
    method="POST",
)
with urllib.request.urlopen(req) as res:
    print(res.read().decode())
```

send.goCopia

```
package main

import (
	"bytes"
	"encoding/base64"
	"encoding/json"
	"fmt"
	"io"
	"net/http"
	"os"
)

func main() {
	pdf, err := os.ReadFile("document.pdf")
	if err != nil {
		panic(err)
	}
	body, _ := json.Marshal(map[string]string{
		"to":     "+14155552671",
		"base64": base64.StdEncoding.EncodeToString(pdf),
	})
	req, _ := http.NewRequest("POST", "https://api.singlefax.com/api/v1/faxes", bytes.NewReader(body))
	req.Header.Set("Authorization", "Bearer "+os.Getenv("SINGLEFAX_API_KEY"))
	req.Header.Set("Content-Type", "application/json")
	req.Header.Set("Idempotency-Key", "send-document-1")
	res, err := http.DefaultClient.Do(req)
	if err != nil {
		panic(err)
	}
	defer res.Body.Close()
	out, _ := io.ReadAll(res.Body)
	fmt.Println(res.Status, string(out))
}
```

send.phpCopia

```
<?php
$pdf = base64_encode(file_get_contents('document.pdf'));
$ch = curl_init('https://api.singlefax.com/api/v1/faxes');
curl_setopt_array($ch, [
  CURLOPT_POST => true,
  CURLOPT_HTTPHEADER => [
    'Authorization: Bearer ' . getenv('SINGLEFAX_API_KEY'),
    'Content-Type: application/json',
    'Idempotency-Key: send-document-1',
  ],
  CURLOPT_POSTFIELDS => json_encode(['to' => '+14155552671', 'base64' => $pdf]),
  CURLOPT_RETURNTRANSFER => true,
]);
echo curl_exec($ch);
```

## File grandi: carica, poi invia

La CLI crea un token di caricamento, esegue PUT dei byte e invia con `uploadToken`. Anche PUT richiede Bearer. Preferiscilo a grandi file nel JSON. Non convertire prima in PDF.

curlJavaScriptPythonGoPHP

terminalCopia

```
UPLOAD=$(curl -sS https://api.singlefax.com/api/v1/uploads \
  -H "Authorization: Bearer $SINGLEFAX_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"contentType":"application/pdf"}')

UPLOAD_URL=$(printf '%s' "$UPLOAD" | python3 -c "import json,sys; print(json.load(sys.stdin)['uploadUrl'])")
TOKEN=$(printf '%s' "$UPLOAD" | python3 -c "import json,sys; print(json.load(sys.stdin)['uploadToken'])")

curl -sS -X PUT "$UPLOAD_URL" \
  -H "Authorization: Bearer $SINGLEFAX_API_KEY" \
  -H "Content-Type: application/pdf" \
  --data-binary @document.pdf

curl -sS https://api.singlefax.com/api/v1/faxes \
  -H "Authorization: Bearer $SINGLEFAX_API_KEY" \
  -H "Content-Type: application/json" \
  -H "Idempotency-Key: $(uuidgen)" \
  -d "{\"to\":\"+14155552671\",\"uploadToken\":\"$TOKEN\"}"
```

upload-send.mjsCopia

```
import { readFile } from 'node:fs/promises'
import { randomUUID } from 'node:crypto'

const api = 'https://api.singlefax.com'
const key = process.env.SINGLEFAX_API_KEY
const auth = { Authorization: `Bearer ${key}` }
const pdf = await readFile('./document.pdf')

const upload = await fetch(`${api}/api/v1/uploads`, {
  method: 'POST',
  headers: { ...auth, 'Content-Type': 'application/json' },
  body: JSON.stringify({ contentType: 'application/pdf', maxBytes: pdf.byteLength }),
}).then((r) => r.json())

await fetch(upload.uploadUrl, {
  method: 'PUT',
  headers: { ...auth, 'Content-Type': 'application/pdf' },
  body: pdf,
})

const fax = await fetch(`${api}/api/v1/faxes`, {
  method: 'POST',
  headers: {
    ...auth,
    'Content-Type': 'application/json',
    'Idempotency-Key': randomUUID(),
  },
  body: JSON.stringify({ to: '+14155552671', uploadToken: upload.uploadToken }),
}).then((r) => r.json())

console.log(fax)
```

upload\_send.pyCopia

```
import json, os, urllib.request, uuid
from pathlib import Path

API = "https://api.singlefax.com"
KEY = os.environ["SINGLEFAX_API_KEY"]
pdf = Path("document.pdf").read_bytes()

def request(url, *, data=None, method="GET", headers=None, content_type="application/json"):
    req = urllib.request.Request(
        url,
        data=data,
        headers={
            "Authorization": f"Bearer {KEY}",
            "Content-Type": content_type,
            **(headers or {}),
        },
        method=method,
    )
    with urllib.request.urlopen(req) as res:
        return res.read()

upload = json.loads(request(
    f"{API}/api/v1/uploads",
    method="POST",
    data=json.dumps({"contentType": "application/pdf", "maxBytes": len(pdf)}).encode(),
))
request(upload["uploadUrl"], method="PUT", data=pdf, content_type="application/pdf")
fax = request(
    f"{API}/api/v1/faxes",
    method="POST",
    data=json.dumps({"to": "+14155552671", "uploadToken": upload["uploadToken"]}).encode(),
    headers={"Idempotency-Key": str(uuid.uuid4())},
)
print(fax.decode())
```

upload\_send.goCopia

```
package main

import (
	"bytes"
	"encoding/json"
	"fmt"
	"io"
	"net/http"
	"os"
)

func main() {
	key := os.Getenv("SINGLEFAX_API_KEY")
	pdf, err := os.ReadFile("document.pdf")
	if err != nil {
		panic(err)
	}

	upBody, _ := json.Marshal(map[string]any{"contentType": "application/pdf", "maxBytes": len(pdf)})
	upReq, _ := http.NewRequest("POST", "https://api.singlefax.com/api/v1/uploads", bytes.NewReader(upBody))
	upReq.Header.Set("Authorization", "Bearer "+key)
	upReq.Header.Set("Content-Type", "application/json")
	upRes, err := http.DefaultClient.Do(upReq)
	if err != nil {
		panic(err)
	}
	defer upRes.Body.Close()
	var upload struct {
		UploadToken string `json:"uploadToken"`
		UploadUrl   string `json:"uploadUrl"`
	}
	json.NewDecoder(upRes.Body).Decode(&upload)

	put, _ := http.NewRequest("PUT", upload.UploadUrl, bytes.NewReader(pdf))
	put.Header.Set("Authorization", "Bearer "+key)
	put.Header.Set("Content-Type", "application/pdf")
	if _, err := http.DefaultClient.Do(put); err != nil {
		panic(err)
	}

	sendBody, _ := json.Marshal(map[string]string{"to": "+14155552671", "uploadToken": upload.UploadToken})
	faxReq, _ := http.NewRequest("POST", "https://api.singlefax.com/api/v1/faxes", bytes.NewReader(sendBody))
	faxReq.Header.Set("Authorization", "Bearer "+key)
	faxReq.Header.Set("Content-Type", "application/json")
	faxReq.Header.Set("Idempotency-Key", "send-document-1")
	faxRes, err := http.DefaultClient.Do(faxReq)
	if err != nil {
		panic(err)
	}
	defer faxRes.Body.Close()
	out, _ := io.ReadAll(faxRes.Body)
	fmt.Println(string(out))
}
```

upload-send.phpCopia

```
<?php
$key = getenv('SINGLEFAX_API_KEY');
$pdf = file_get_contents('document.pdf');

$ch = curl_init('https://api.singlefax.com/api/v1/uploads');
curl_setopt_array($ch, [
  CURLOPT_POST => true,
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer $key",
    'Content-Type: application/json',
  ],
  CURLOPT_POSTFIELDS => json_encode(['contentType' => 'application/pdf', 'maxBytes' => strlen($pdf)]),
  CURLOPT_RETURNTRANSFER => true,
]);
$upload = json_decode(curl_exec($ch), true);

$ch = curl_init($upload['uploadUrl']);
curl_setopt_array($ch, [
  CURLOPT_CUSTOMREQUEST => 'PUT',
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer $key",
    'Content-Type: application/pdf',
  ],
  CURLOPT_POSTFIELDS => $pdf,
  CURLOPT_RETURNTRANSFER => true,
]);
curl_exec($ch);

$ch = curl_init('https://api.singlefax.com/api/v1/faxes');
curl_setopt_array($ch, [
  CURLOPT_POST => true,
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer $key",
    'Content-Type: application/json',
    'Idempotency-Key: send-document-1',
  ],
  CURLOPT_POSTFIELDS => json_encode(['to' => '+14155552671', 'uploadToken' => $upload['uploadToken']]),
  CURLOPT_RETURNTRANSFER => true,
]);
echo curl_exec($ch);
```

## Riferimento REST

| Metodo | Percorso | Autenticazione | Note |
| --- | --- | --- | --- |
| POST | /api/v1/faxes | fax:send | Idempotency-Key required. JSON { to, base64 \| uploadToken } or multipart file. |
| GET | /api/v1/faxes | fax:read | List. Query limit, offset. |
| GET | /api/v1/faxes/{id} | fax:read | Status including latest delivery attempt. |
| POST | /api/v1/faxes/quote | fax:read | { to, pages? \| base64? }, quote without charging. |
| POST | /api/v1/uploads | fax:send | Returns uploadToken + uploadUrl. PUT the bytes, then send with uploadToken. |
| GET | /api/v1/credits | credits:read | Prepaid balance. |
| POST | /api/v1/credits/checkout | credits:checkout | { amountCents }. Stripe Checkout for a credit pack. |
| GET | /api/v1/received-faxes | inbox:read | Inbound inbox list. Query limit, cursor. No transcripts in list. |
| GET | /api/v1/received-faxes/{id} | inbox:read | Inbound detail with bounded transcript slice. HIPAA Secure content is omitted. |
| GET | /api/v1/numbers | fax:read | Active fax numbers. |
| POST | /api/v1/numbers | credits:checkout | { sku?, country?, state? }, default inbound\_30day. Returns checkoutUrl + reserved phoneNumber. |
| GET | /api/v1/skus | public | Catalog. Same shape as MCP list\_skus. |
| POST | /api/v1/checkout | credits:checkout | { sku }, credit\_pack, inbound, subscriptions, lifetime. |

Schemi completi: [openapi.json](https://singlefax.com/openapi.json). Modifiche incompatibili: [politica delle versioni](https://singlefax.com/it/gestione-versioni) (Sunset di 90 giorni). HTTP 402 su questa API crediti significa saldo insufficiente; MPP 402 è solo `POST /api/v1/machine/faxes`.

## Webhook

Eventi firmati `fax.queued`, `fax.delivered`, `fax.failed`, `credits.low_balance`. Verifica `SingleFax-Signature` (`t=,v1=`) sul corpo originale. HMAC-SHA256 di `timestamp.payload`. Aggiungi un endpoint in [webhook del pannello](https://singlefax.com/it/accedi?redirect=/dashboard/webhooks).

JavaScriptPython

verify.mjsCopia

```
import { createHmac, timingSafeEqual } from 'node:crypto'

export function verifySingleFaxSignature(rawBody, signatureHeader, secret, toleranceSeconds = 300) {
  const parts = Object.fromEntries(signatureHeader.split(',').map((kv) => kv.split('=')))
  const timestamp = Number(parts.t)
  if (!Number.isFinite(timestamp) || !parts.v1) return false
  if (Math.abs(Math.floor(Date.now() / 1000) - timestamp) > toleranceSeconds) return false
  const expected = createHmac('sha256', secret).update(`${timestamp}.${rawBody}`).digest('hex')
  const a = Buffer.from(parts.v1)
  const b = Buffer.from(expected)
  return a.length === b.length && timingSafeEqual(a, b)
}
```

verify.pyCopia

```
import hashlib, hmac, time

def verify_singlefax_signature(payload: bytes, header: str, secret: str, tolerance: int = 300) -> bool:
    parts = dict(p.split("=", 1) for p in header.split(","))
    timestamp = int(parts["t"])
    if abs(int(time.time()) - timestamp) > tolerance:
        return False
    expected = hmac.new(
        secret.encode(),
        f"{timestamp}.".encode() + payload,
        hashlib.sha256,
    ).hexdigest()
    return hmac.compare_digest(expected, parts["v1"])
```

## Vincoli

- Conserva le chiavi sul server. Non incorporare `sf_live_` in una pagina web.
- Non inviare PHI. Gli enti soggetti usano HIPAA Secure sul sito con BAA elettronico.
- Destinazioni E.164 valide. PDF, Word, Excel, PowerPoint, RTF, testo e immagini: MIME in OpenAPI. Non convertire prima in PDF, lo facciamo prima dell’invio.
- MCP chat e Stripe MPP: [/agents](https://singlefax.com/it/agenti-ia), [mpp.md](https://singlefax.com/mpp.md), [MPP e Instant Checkout a confronto](https://singlefax.com/blog/stripe-machine-payments-protocol).

## Domande frequenti

CLI, REST o MCP?

Servono crediti prima di inviare?

Posso usare chiavi sf\_test\_?

C’è un SDK ufficiale?

È HIPAA?

## Documentazione leggibile dalle macchine

Markdown semplice e OpenAPI per crawler e agenti di programmazione. Stesse informazioni della pagina.

[Guida all’autenticazione](https://singlefax.com/it/autenticazione) [Riferimento OpenAPI](https://singlefax.com/it/openapi) [developers.md](https://singlefax.com/developers.md) [openapi.json](https://singlefax.com/openapi.json) [auth.md](https://singlefax.com/auth.md) [llms.txt](https://singlefax.com/llms.txt) [MCP / agenti](https://singlefax.com/it/agenti-ia) [MPP e Instant Checkout a confronto](https://singlefax.com/blog/stripe-machine-payments-protocol) [versioning.md](https://singlefax.com/versioning.md)

[singlefax](https://singlefax.com/it)

Invia una volta. Ricevi quando serve.

[![Scarica su Google Play](https://singlefax.com/images/google-play-badge.png)](https://play.google.com/store/apps/details?id=com.monocube.singlefax) [Aggiungi a Chrome](https://chromewebstore.google.com/detail/singlefax-fax-a-document/ojpmpilgkmjcfebhpkdmmjlkbcifkkej) [SingleFax su LinkedIn](https://www.linkedin.com/company/singlefax/) [SingleFax su Facebook](https://www.facebook.com/singlefax) [SingleFax su Instagram](https://www.instagram.com/singlefax.app) [SingleFax su Threads](https://www.threads.com/@singlefax.app) [SingleFax su YouTube](https://www.youtube.com/@singlefax) [SingleFax su GitHub](https://github.com/SingleFax)

## Servizi fax

- [Invia un fax](https://singlefax.com/it/inviare-un-fax?type=send)
- [Ricevi fax](https://singlefax.com/it/inviare-un-fax?type=receive)
- [Numero gratuito per 24 ore](https://singlefax.com/it/numero-fax-gratuito)
- [Numero permanente](https://singlefax.com/it/numero-fax-permanente)
- [Portabilità del numero](https://singlefax.com/it/portabilita-numero)
- [Test fax](https://singlefax.com/it/numero-test-fax)
- [Piani aziendali](https://singlefax.com/it/per-le-aziende)
- [HIPAA Secure](https://singlefax.com/it/fax-hipaa)
- [Fax online](https://singlefax.com/it/inviare-fax-online)
- [Fax via email](https://singlefax.com/it/fax-via-email)
- [Fax via WhatsApp](https://singlefax.com/it/fax-via-whatsapp)

## Invii all'IRS

- [Tutti gli invii IRS](https://singlefax.com/it/invii-irs)
- [EIN · Modulo SS-4](https://singlefax.com/it/richiedere-ein)
- [Modulo 5472](https://singlefax.com/it/inviare-modulo-5472)
- [Modulo 7004](https://singlefax.com/it/inviare-modulo-7004)
- [Modulo 2553](https://singlefax.com/it/inviare-modulo-2553)
- [Modulo 2848](https://singlefax.com/it/inviare-modulo-2848)
- [Modulo 4506-T](https://singlefax.com/it/inviare-modulo-4506-t)
- [Modulo 8821](https://singlefax.com/it/inviare-modulo-8821)
- [Modulo 8802](https://singlefax.com/it/inviare-modulo-8802)
- [Modulo 8655](https://singlefax.com/it/inviare-modulo-8655)
- [Modulo 3911](https://singlefax.com/it/inviare-modulo-3911)
- [Modulo 8233](https://singlefax.com/it/inviare-modulo-8233)
- [NY POA-1](https://singlefax.com/it/inviare-modulo-ny-poa-1)

## Strumenti e risorse

- [Strumenti fax gratuiti](https://singlefax.com/it/strumenti-fax-gratuiti)
- [Prepara un PDF per fax](https://singlefax.com/it/preparare-fax)
- [Pagina di prova stampabile](https://singlefax.com/it/pagina-prova-fax)
- [Copertine fax](https://singlefax.com/it/copertina-fax)
- [App mobile](https://singlefax.com/it/app-mobile)
- [Estensione Chrome](https://singlefax.com/it/estensione-chrome)
- [Sviluppatori](https://singlefax.com/it/sviluppatori)
- [Agenti fax IA](https://singlefax.com/it/agenti-ia)
- [Gestione delle versioni](https://singlefax.com/it/gestione-versioni)
- [Numeri fax della Camera USA](https://singlefax.com/it/numeri-fax/camera-usa)
- [Numeri fax del Senato USA](https://singlefax.com/it/numeri-fax/senato-usa)
- [Numeri fax dei governatori USA](https://singlefax.com/it/numeri-fax/governatori-usa)

## SingleFax

- [Prezzi](https://singlefax.com/it/prezzi)
- [Blog](https://singlefax.com/it/blog)
- [Chi siamo](https://singlefax.com/it/chi-siamo)
- [Contatti](https://singlefax.com/it/contatti)
- [Assistenza](https://singlefax.com/it/assistenza)

© 2026 SingleFax

[Privacy](https://singlefax.com/it/informativa-privacy) [Condizioni](https://singlefax.com/it/condizioni-servizio) [Rimborsi](https://singlefax.com/it/politica-rimborsi) [Segnala un abuso](https://singlefax.com/it/segnala-abuso)

```json
{"@context":"https://schema.org","@graph":[{"@id":"https://singlefax.com/it#website","@type":"WebSite","description":"Con SingleFax puoi inviare e ricevere fax quando ti servono, dal telefono o dal computer. Non occorre registrarsi né creare un account.","inLanguage":"it","name":"SingleFax – Invia e ricevi fax senza abbonamento","url":"https://singlefax.com/it","translationOfWork":{"@id":"https://singlefax.com/#website"}},{"@id":"https://singlefax.com/it/sviluppatori#webpage","description":"Invia fax dal backend con REST API e npm CLI SingleFax. Crediti prepagati, chiavi API, OpenAPI ed esempi curl, Node, Python, Go e PHP.","name":"Documentazione API e CLI: Node, Python, Go e PHP","url":"https://singlefax.com/it/sviluppatori","@type":["WebPage","FAQPage"],"breadcrumb":{"@id":"https://singlefax.com/it/sviluppatori#breadcrumb"},"isPartOf":{"@id":"https://singlefax.com/it#website"},"mainEntity":[{"@id":"https://singlefax.com/it/sviluppatori#/schema/question/1"},{"@id":"https://singlefax.com/it/sviluppatori#/schema/question/2"},{"@id":"https://singlefax.com/it/sviluppatori#/schema/question/3"},{"@id":"https://singlefax.com/it/sviluppatori#/schema/question/4"},{"@id":"https://singlefax.com/it/sviluppatori#/schema/question/5"}],"potentialAction":[{"@type":"ReadAction","target":["https://singlefax.com/it/sviluppatori"]}]},{"@id":"https://singlefax.com/it/sviluppatori#breadcrumb","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","name":"Home","item":"https://singlefax.com/it","position":1},{"@type":"ListItem","name":"Sviluppatori","item":"https://singlefax.com/it/sviluppatori","position":2}]},{"@id":"https://singlefax.com/it/sviluppatori#/schema/question/1","@type":"Question","inLanguage":"it","name":"CLI, REST o MCP?","acceptedAnswer":{"@type":"Answer","text":"Per i tuoi backend usa npm CLI o REST con chiave API e crediti prepagati. Passa Word, Excel, PDF o immagine originali, senza convertirli prima in PDF. Le chat (Cursor, Claude, Codex, ChatGPT) usano MCP su /agents. Agenti autonomi con Stripe Shared Payment Token o wallet Tempo USDC usano MPP (HTTP 402), /agents e /blog/stripe-machine-payments-protocol."}},{"@id":"https://singlefax.com/it/sviluppatori#/schema/question/2","@type":"Question","inLanguage":"it","name":"Servono crediti prima di inviare?","acceptedAnswer":{"@type":"Answer","text":"Sì per gli invii con chiave API. Crea una chiave, acquista crediti dal pannello o POST /api/v1/credits/checkout, poi invia. HTTP 402 su /api/v1/faxes indica crediti insufficienti, non una richiesta MPP."}},{"@id":"https://singlefax.com/it/sviluppatori#/schema/question/3","@type":"Question","inLanguage":"it","name":"Posso usare chiavi sf_test_?","acceptedAnswer":{"@type":"Answer","text":"Le chiavi test non inviano fax reali. Usa sf_live_ per la consegna. Tieni le chiavi sul server, mai in browser o app mobile."}},{"@id":"https://singlefax.com/it/sviluppatori#/schema/question/4","@type":"Question","inLanguage":"it","name":"C’è un SDK ufficiale?","acceptedAnswer":{"@type":"Answer","text":"Il pacchetto ufficiale è npm CLI @singlefax/cli. Gli esempi Python, Go e PHP usano client HTTP standard. Non esistono SDK separati per Python, Go o Ruby. Usa /openapi.json con strumenti OpenAPI per generare un client."}},{"@id":"https://singlefax.com/it/sviluppatori#/schema/question/5","@type":"Question","inLanguage":"it","name":"È HIPAA?","acceptedAnswer":{"@type":"Answer","text":"No. Non inviare PHI tramite API pubblica, CLI, MCP o MPP. Gli enti soggetti usano HIPAA Secure sul sito con BAA elettronico."}}]}
```