# API Reference

### **REST APIs (v2)**

The latest version of CERTInext Interface-less REST APIs - designed for scale, flexibility & ease of integration. CERTInext API v2 simplifies certificate lifecycle management across SSL/TLS, Document Signer, and Private PKI, with OAuth 2.0 Bearer authentication, idempotent write operations, and standardized, predictable error responses. The APIs are built on REST and therefore interoperable with any existing web application framework that supports REST-based API calls.

<a href="https://documenter.getpostman.com/view/40123569/2sBXqJJLFh" class="button primary" data-icon="arrow-up-right-from-square">Go to API (v2) in Postman</a>

### **REST APIs (v1)** \[Planned Deprecation Date: 31 Jul 2026]

⚠️ These APIs will be deprecated and are not recommended for new integrations. Please plan to migrate to REST APIs v2 to ensure continued compatibility and support.

RESTful services designed for scale, flexibility & ease of integration. CERTInext Interface-less APIs enables access to key functionalities offered on CERTInext product that can be consumed by your application. Our API's are built on REST and therefore interoperable with any existing web application framework that supports REST based API calls.

<a href="https://documenter.getpostman.com/view/40123569/2sBXijHrEc" class="button primary" data-icon="arrow-up-right-from-square">Go to API (v1)  in Postman</a>

### **ACME APIs**

CERTInext ACME service is meticulously crafted to simplify the automation of SSL/TLS processes, mitigating the complexity and effort associated with managing numerous certificates within an enterprise. With organizations juggling a multitude of certificates, each demanding significant time and effort, ACME proves invaluable by completely automating the essential procedures needed to oversee SSL/TLS certificates across all endpoints in your organization.

<a href="https://documenter.getpostman.com/view/40123569/2sBXijHrEc#11f1ea76-92e0-4575-aeea-e06da28d1cbd" class="button primary" data-icon="arrow-up-right-from-square">Go to ACME in Postman</a>

### Advantages of emSign API Services

#### Interface-less REST APIs

Save time and money by automating certificate management using the CERTInext REST API, supporting certificate ordering, verification, issuance and more.

#### Streamlined Deployments

Automation lightens the hefty burdens traditionally associated with large-scale deployments and lifecycle management within enterprise settings.

#### Preventing Outages

ACME eliminates the risk of website outages caused by expired or improperly configured certificates, safeguarding your enterprise from reputational and financial setbacks.

#### Ensuring Compliance

Compliance requirements related to connection security and other pertinent areas are intricate, constantly evolving, and non-compliance can result in substantial financial consequences for organizations.


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