Certify from your code with one REST call

Everything you can do from the dashboard, your application can do too: send certified notifications, launch contract signatures, timestamp documents or verify identities. An HTTP API with JSON responses, status webhooks and the same sealed evidence.

View the specifications Create a test account

No mandatory SDK: HTTP + JSON
Delivery and signature webhooks
Direct technical support

certified-notification.sh

# Illustrative example: the exact syntax of each
# service is in its specification (below)
curl -X POST https://api.mensatek.com/… \
  -d Correo="your-user" \
  -d Passwd="your-api-key" \
  -d Destinatarios="+34600000000" \
  -d Mensaje="We hereby inform you…"

# → JSON with the sending reference; the sealed
#   certificate arrives via webhook

Trust Service Provider
supervised in Spain Double seal
Mensatek + FNMT on every certificate ISO 27001 & ISO 9001
independently audited 10-year custody
at no extra cost Spanish engineering
operating since 1998

Documentation

Published specifications

Full reference documentation for each service, with parameters, responses and examples.

Certified SMS and SMS Contract

Legally certified SMS notifications and contracts accepted from the phone, with their certificate.

Open specification

Certified Email

Email with evidence of sending, delivery and content.

Open specification

Online contracting v4 (omnichannel)

Contracts for signature by SMS, email, RCS and WhatsApp, with authorization groups and multiple signature boxes.

New version for new integrations

Open specification

Online contracting v3

Reference for existing integrations; new ones should use v4.

Maintenance

Open specification

Timestamping

Qualified timestamps for your documents and evidence.

Open specification

PDF signing and timestamping

Utility to sign and timestamp PDF documents from your applications.

Open specification

Identity verification

Verification with ID document and video, embedded in your onboarding.

Open specification

OTP / 2FA

One-time codes through SMS, voice, email, WhatsApp, RCS and push, with a retry cascade and validation.

Open specification

Your API credentials are your account credentials: create it for free and you will be making your first call in minutes.

How it integrates

Designed not to eat your sprint

Authenticate

With your account credentials. You can create sub-users with limited permissions to separate environments and applications.

Send

One HTTP request per operation: notification, signature, timestamp or verification. Immediate JSON response with the reference.

Receive the evidence

Status changes (delivered, signed, rejected…) reach your webhook, and every sealed certificate stays downloadable and in custody for 10 years.

Your first certified call, this very afternoon

A free account, open documentation and a technical team on +34 910 606 161 if you get stuck.

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