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Certify from your code with one call.

Everything the platform does, the REST API does too: certified notifications by SMS, email and RCS, certified WhatsApp conversations, contract signing, timestamps and identity verification. With webhooks that push every status change to your server in real time.

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  • REST API with JSON
  • Status webhooks
  • Technical support in Spain
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Getting started

From zero to production in three steps

Create your account

Signing up for free includes full API access and trial credits for your first calls.

Read the specification

The documentation for every service is published right here: requests, responses, status codes and copy-ready examples. If anything doesn't fit, the technical team will walk the integration with you.

Listen for the webhooks

Every status change (delivered, read, signed, verified…) reaches your server the moment it happens — no polling, no waiting.

What you can integrate

Every service, one endpoint

  • Certified notificationCertified SMS, email and RCS from your ERP or CRM, with the evidence report returned.
  • Contract signingLaunch signing flows with multiple signers and receive the signed document and its report.
  • TimestampingSeal documents or their hashes in batches, integrated with your archive or billing.
  • Identity verificationGenerate verification links in your onboarding and receive the result by webhook.
  • WhatsApp conversationsStart certified conversations and query the thread and its evidence.
  • Balance and reportsCredits, statuses and PDF evidence-report downloads, all through the API.

The examples on this page are illustrative; the exact reference for each service is its specification, published right below.

Specifications

The full documentation, no sign-up needed

Each specification describes its endpoints with requests, responses, status codes and copy-ready code samples. It is the same reference the technical team uses while walking the integration with you.

Certified delivery

Certified SMS and SMS ContractLegally certified SMS notifications and contracts accepted from the phone, with their certificate.Certified EmailEmail with evidence of sending, delivery and content.WhatsApp BusinessApproved templates, conversations and read states.RCSRich messaging: cards, carousels, buttons and replies.

Online contracting

Online contracting v4 (omnichannel)Contracts for signature by SMS, email, RCS and WhatsApp, with authorization groups and multiple signature boxes.Online contracting v3Reference for existing integrations; new ones should use v4.

Timestamping & PDF

TimestampingQualified timestamps for your documents and evidence.PDF signing and timestampingUtility to sign and timestamp PDF documents from your applications.

Identity verification

Identity verificationVerification with ID document and video, embedded in your onboarding.
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