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Certyneo
Public API v1

Integrate electronic signature into your stack

Send envelopes, track signatures, receive webhooks. Simple REST API, OpenAPI 3.0, curl/Node/Python examples — everything to connect Certyneo to your HRIS, CRM or business software in a few hours.

Quick start

Three steps: create an API key from settings, encode your PDF in base64, send it. The response contains the `signUrl` which you can share directly with the recipient.

cURLbash
# 1. Upload the PDF (multipart) and capture the returned document id.
DOC_ID=$(curl -s -X POST https://certyneo.com/api/v1/documents \
  -H "Authorization: Bearer sk_live_xxxxxxxxxxxxxxxxxxxxxxxx" \
  -F "file=@contrat.pdf" | jq -r .id)

# 2. Create a DRAFT envelope referencing the uploaded document.
ENV_ID=$(curl -s -X POST https://certyneo.com/api/v1/envelopes \
  -H "Authorization: Bearer sk_live_xxxxxxxxxxxxxxxxxxxxxxxx" \
  -H "Content-Type: application/json" \
  -d "{
    \"subject\": \"Contrat de prestation\",
    \"documentIds\": [\"$DOC_ID\"],
    \"recipients\": [
      { \"email\": \"client@example.com\", \"name\": \"Marie Dubois\", \"role\": \"SIGNER\" }
    ]
  }" | jq -r .id)

# 3. Dispatch the envelope — this sends the invitation email/SMS.
curl -X POST https://certyneo.com/api/v1/envelopes/$ENV_ID/send \
  -H "Authorization: Bearer sk_live_xxxxxxxxxxxxxxxxxxxxxxxx"
JavaScript / Nodets
// npm install @certyneo/sdk  (or call fetch directly)
const auth = { Authorization: `Bearer ${process.env.CERTYNEO_API_KEY}` };

// 1. Upload the PDF (multipart).
const fd = new FormData();
fd.append("file", new Blob([pdfBuffer], { type: "application/pdf" }), "contrat.pdf");
const doc = await fetch("https://certyneo.com/api/v1/documents", {
  method: "POST", headers: auth, body: fd,
}).then((r) => r.json());

// 2. Create the DRAFT envelope.
const envelope = await fetch("https://certyneo.com/api/v1/envelopes", {
  method: "POST",
  headers: { ...auth, "Content-Type": "application/json" },
  body: JSON.stringify({
    subject: "Contrat de prestation",
    documentIds: [doc.id],
    recipients: [
      { email: "client@example.com", name: "Marie Dubois", role: "SIGNER" },
    ],
  }),
}).then((r) => r.json());

// 3. Dispatch — this triggers the invitation channel for every recipient.
await fetch(`https://certyneo.com/api/v1/envelopes/${envelope.id}/send`, {
  method: "POST", headers: auth,
});
console.log(envelope.id);
Pythonpython
import os, requests

auth = {"Authorization": f"Bearer {os.environ['CERTYNEO_API_KEY']}"}

# 1. Upload the PDF (multipart).
with open("contrat.pdf", "rb") as f:
    doc = requests.post(
        "https://certyneo.com/api/v1/documents",
        headers=auth,
        files={"file": ("contrat.pdf", f, "application/pdf")},
    ).json()

# 2. Create the DRAFT envelope.
envelope = requests.post(
    "https://certyneo.com/api/v1/envelopes",
    headers={**auth, "Content-Type": "application/json"},
    json={
        "subject": "Contrat de prestation",
        "documentIds": [doc["id"]],
        "recipients": [
            {"email": "client@example.com", "name": "Marie Dubois", "role": "SIGNER"},
        ],
    },
).json()

# 3. Dispatch — this triggers the invitation channel for every recipient.
requests.post(
    f"https://certyneo.com/api/v1/envelopes/{envelope['id']}/send",
    headers=auth,
)
print(envelope["id"])

Envelopes

Creation, sending, status tracking, cancellation. An envelope can contain multiple documents and multiple signers (parallel or sequential).

The Commission shall adopt implementing acts laying down the rules for the application of this Regulation.

Receive `envelope.created`, `envelope.completed`, `envelope.declined` on your chosen URL. HMAC SHA-256 on each payload to verify the origin.

Simple authentication

Bearer token. One key per environment (test / prod). Instantly revocable. Limit 100 req/min/key, burst of 200, clean 429 with Retry-After header.

Available endpoints

12 routes covering the full cycle: envelopes, documents, webhooks, API keys. All routes accept a Bearer token and return JSON.

MethodPathDescription
POST/api/v1/documentsUpload a PDF (multipart) — returns document id
GET/api/v1/documentsList documents
GET/api/v1/documents/{id}Fetch document metadata
DELETE/api/v1/documents/{id}Delete document
GET/api/v1/envelopesList envelopes
POST/api/v1/envelopesCreate envelope (status: DRAFT)
GET/api/v1/envelopes/{id}Fetch envelope state
PATCH/api/v1/envelopes/{id}Update DRAFT envelope
DELETE/api/v1/envelopes/{id}Void / delete DRAFT envelope
POST/api/v1/envelopes/{id}/sendDispatch DRAFT — sends invitations
GET/api/v1/envelopes/{id}/audit-trailDownload eIDAS audit-trail PDF
GET/api/v1/envelopes/{id}/signed-documentDownload signed PDF (once COMPLETED)
GET/api/v1/webhooksList webhooks
POST/api/v1/webhooksRegister webhook
DELETE/api/v1/webhooks/{id}Unregister
GET/api/v1/keysList API keys
POST/api/v1/keysCreate API key
DELETE/api/v1/keys/{id}Revoke key

Rate limits

Rate limits guarantee stable service quality for all customers. If you need more, contact us.

  • 100 requests per minute per API key
  • Burst allowed up to 200 requests in less than 10s
  • 429 response with Retry-After header indicating the delay in seconds