Client Interfaces

The Client Interfaces allow for the non-administrative use of SignServer to sign documents, code, or data.

The following lists available client interfaces for using SignServer:

SignClient

Command-line tool for sending requests to the workers.

Supports:

• Submitting signing and timestamp requests

• Testing worker configurations

• Automating signing in pipelines

Good for: CI/CD, testing, batch jobs.

Signum Agents

Interface for signing with any platform-native signing tool that can access certificates stored in SignServer.

Supports:

• Signing with macOS

• Signing with Linux

Good for: Signing using native tools of file formats not supported by SignServer.

Client REST Interface

Modern JSON/HTTP interface for signing operations.

Supports:

• Binary data signing

• PDF signing

• XML signing

• Timestamping

• Worker status queries

Good for: New integrations.

Client HTTP Interface

Interface for sending HTTP requests to the SignServer servlet.

Supports:

• Sending signing requests

• Handling signatures

• TLS client-auth based signing

• Worker selection and configuration

Good for: Existing integrations.