Code Examples

# Encode PDF to base64
PDF_B64=$(base64 -w 0 contract.pdf)  # Linux
# PDF_B64=$(base64 -i contract.pdf)  # macOS

curl -X POST https://signforge.io/api/v1/quick-sign \
  -H "X-API-Key: sf_live_YOUR_KEY" \
  -H "Content-Type: application/json" \
  -d "{
    \"title\": \"Service Agreement\",
    \"pdf_base64\": \"$PDF_B64\",
    \"signer_email\": \"client@example.com\",
    \"signer_name\": \"Jane Doe\"
  }"

curl https://signforge.io/api/v1/envelopes/ENVELOPE_ID \
  -H "X-API-Key: sf_live_YOUR_KEY"

curl https://signforge.io/api/v1/envelopes/ENVELOPE_ID/documents/signed \
  -H "X-API-Key: sf_live_YOUR_KEY" \
  -o signed_contract.pdf

curl "https://signforge.io/api/v1/envelopes?status=completed&limit=20" \
  -H "X-API-Key: sf_live_YOUR_KEY"

import requests
import base64
import time

API_KEY = "sf_live_YOUR_KEY"
BASE = "https://signforge.io/api/v1"
HEADERS = {"X-API-Key": API_KEY, "Content-Type": "application/json"}

# 1. Send for signing
with open("contract.pdf", "rb") as f:
    pdf_b64 = base64.b64encode(f.read()).decode()

resp = requests.post(f"{BASE}/quick-sign", headers=HEADERS, json={
    "title": "Consulting Agreement",
    "pdf_base64": pdf_b64,
    "signer_email": "client@company.com",
    "signer_name": "Alex Chen",
})
data = resp.json()
envelope_id = data["envelope_id"]
print(f"Sent! Envelope: {envelope_id}")

# 2. Poll for completion
while True:
    status = requests.get(
        f"{BASE}/envelopes/{envelope_id}", headers=HEADERS
    ).json()
    print(f"  Status: {status['status']}")
    if status["status"] == "completed":
        break
    time.sleep(30)  # Check every 30 seconds

# 3. Download signed PDF
signed = requests.get(
    f"{BASE}/envelopes/{envelope_id}/documents/signed",
    headers={"X-API-Key": API_KEY},
)
with open("signed_contract.pdf", "wb") as f:
    f.write(signed.content)
print("Downloaded signed PDF!")

const express = require("express");
const crypto = require("crypto");
const fs = require("fs");

const app = express();
app.use(express.json());

const WEBHOOK_SECRET = "your_webhook_secret";
const API_KEY = "sf_live_YOUR_KEY";
const BASE = "https://signforge.io/api/v1";

// Verify webhook signature
function verifySignature(body, signature) {
  const expected = crypto
    .createHmac("sha256", WEBHOOK_SECRET)
    .update(JSON.stringify(body))
    .digest("hex");
  return crypto.timingSafeEqual(
    Buffer.from(expected),
    Buffer.from(signature)
  );
}

app.post("/webhook", async (req, res) => {
  const sig = req.headers["x-webhook-signature"];
  if (!verifySignature(req.body, sig)) {
    return res.status(401).send("Invalid signature");
  }

  const { event, envelope_id, data } = req.body;
  console.log(`Event: ${event} for envelope ${envelope_id}`);

  if (event === "envelope.completed") {
    // Download the signed PDF
    const response = await fetch(
      `${BASE}/envelopes/${envelope_id}/documents/signed`,
      { headers: { "X-API-Key": API_KEY } }
    );
    const buffer = Buffer.from(await response.arrayBuffer());
    fs.writeFileSync(`signed_${envelope_id}.pdf`, buffer);
    console.log("Saved signed PDF!");
  }

  res.sendStatus(200);
});

app.listen(3000, () => console.log("Webhook server on port 3000"));

{
  "method": "POST",
  "url": "https://signforge.io/api/v1/quick-sign",
  "headers": {
    "X-API-Key": "sf_live_YOUR_KEY",
    "Content-Type": "application/json"
  },
  "body": {
    "title": "={{ $json.document_title }}",
    "pdf_base64": "={{ $json.pdf_content }}",
    "signer_email": "={{ $json.signer_email }}",
    "signer_name": "={{ $json.signer_name }}"
  }
}

// Retool Query — sendForSigning
// Type: POST, Path: /quick-sign
{
  "title": {{ textInput_title.value }},
  "pdf_base64": {{ fileInput_pdf.value[0].base64 }},
  "signer_email": {{ textInput_email.value }},
  "signer_name": {{ textInput_name.value }}
}

// Retool Query — listEnvelopes
// Type: GET, Path: /envelopes?limit=50
// No body needed — bind the result to a Table component

from flask import Flask, request
from twilio.rest import Client
import requests
import base64

app = Flask(__name__)

SIGNFORGE_KEY = "sf_live_YOUR_KEY"
BASE = "https://signforge.io/api/v1"
TWILIO_SID = "YOUR_SID"
TWILIO_TOKEN = "YOUR_TOKEN"
TWILIO_FROM = "whatsapp:+14155238886"

twilio = Client(TWILIO_SID, TWILIO_TOKEN)

@app.route("/whatsapp", methods=["POST"])
def handle_message():
    body = request.form.get("Body", "").strip()
    sender = request.form.get("From", "")

    if body.lower().startswith("sign "):
        # Parse: "sign Jane jane@example.com"
        parts = body.split(" ", 2)
        if len(parts) < 3:
            reply = "Usage: sign <Name> <email>"
        else:
            name, email = parts[1], parts[2]

            # Create envelope with link delivery (no email)
            with open("template_nda.pdf", "rb") as f:
                pdf_b64 = base64.b64encode(f.read()).decode()

            resp = requests.post(f"{BASE}/quick-sign", json={
                "title": "NDA Agreement",
                "pdf_base64": pdf_b64,
                "signer_email": email,
                "signer_name": name,
            }, headers={
                "X-API-Key": SIGNFORGE_KEY,
                "Content-Type": "application/json",
            })
            data = resp.json()
            signing_url = data.get("signing_url", "")

            reply = f"NDA sent! Signing link:\n{signing_url}"

            # Also send via WhatsApp
            twilio.messages.create(
                body=f"Hi {name}, please sign your NDA:\n{signing_url}",
                from_=TWILIO_FROM,
                to=f"whatsapp:{email}",  # Replace with phone
            )
    else:
        reply = "Send 'sign <Name> <email>' to create an NDA."

    twilio.messages.create(body=reply, from_=TWILIO_FROM, to=sender)
    return "OK", 200

// Airtable Scripting Extension
const API_KEY = "sf_live_YOUR_KEY";
const BASE_URL = "https://signforge.io/api/v1";

// Get the selected record
const table = base.getTable("Contracts");
const record = await input.recordAsync("Select a contract:", table);

if (!record) {
  output.text("No record selected.");
} else {
  const title = record.getCellValueAsString("Contract Title");
  const email = record.getCellValueAsString("Signer Email");
  const name = record.getCellValueAsString("Signer Name");
  const attachments = record.getCellValue("PDF");

  if (!attachments || attachments.length === 0) {
    output.text("No PDF attached to this record.");
  } else {
    // Download the PDF and convert to base64
    const pdfUrl = attachments[0].url;
    const pdfResp = await fetch(pdfUrl);
    const pdfBuffer = await pdfResp.arrayBuffer();
    const pdfBytes = new Uint8Array(pdfBuffer);

    // Convert to base64
    let binary = "";
    for (let i = 0; i < pdfBytes.length; i++) {
      binary += String.fromCharCode(pdfBytes[i]);
    }
    const pdfBase64 = btoa(binary);

    // Send for signing
    const resp = await fetch(BASE_URL + "/quick-sign", {
      method: "POST",
      headers: {
        "X-API-Key": API_KEY,
        "Content-Type": "application/json",
      },
      body: JSON.stringify({
        title: title,
        pdf_base64: pdfBase64,
        signer_email: email,
        signer_name: name,
      }),
    });

    const data = await resp.json();

    // Update the record with envelope ID
    await table.updateRecordAsync(record, {
      "Envelope ID": data.envelope_id,
      "Status": data.status,
    });

    output.text(
      "Sent for signing!\n" +
      "Envelope ID: " + data.envelope_id + "\n" +
      "Status: " + data.status
    );
  }
}

#!/bin/bash
# batch_sign.sh — Send documents from CSV
# Usage: ./batch_sign.sh contracts.csv

API_KEY="sf_live_YOUR_KEY"
BASE="https://signforge.io/api/v1"
CSV_FILE="$1"

if [ -z "$CSV_FILE" ]; then
  echo "Usage: $0 <csv_file>"
  exit 1
fi

# Skip header row, process each line
tail -n +2 "$CSV_FILE" | while IFS=, read -r title email name pdf_path; do
  echo "Sending: $title to $email..."

  # Encode PDF
  PDF_B64=$(base64 -w 0 "$pdf_path" 2>/dev/null || base64 -i "$pdf_path")

  # Send via API
  RESPONSE=$(curl -s -X POST "$BASE/quick-sign" \
    -H "X-API-Key: $API_KEY" \
    -H "Content-Type: application/json" \
    -d "{
      \"title\": \"$title\",
      \"pdf_base64\": \"$PDF_B64\",
      \"signer_email\": \"$email\",
      \"signer_name\": \"$name\"
    }")

  ENVELOPE_ID=$(echo "$RESPONSE" | grep -o '"envelope_id":"[^"]*"' | cut -d'"' -f4)
  echo "  -> Envelope: $ENVELOPE_ID"

  # Rate limit courtesy (1 second between requests)
  sleep 1
done

echo "Done! All documents sent."

title,email,name,pdf_path
NDA Agreement,alice@company.com,Alice Smith,./docs/nda.pdf
Service Contract,bob@agency.com,Bob Johnson,./docs/service.pdf
Consulting Terms,carol@startup.io,Carol Lee,./docs/consulting.pdf