Clicksign API

Spec sheet

Purpose

The Envelope API lets developers create envelopes, add documents and signers, set signer authentication requirements, and activate signature flows.Read 3 Oct 2026 · developers.clicksign.com

Intended users

The maker describes API integrations as suited to more complex scenarios and says they generally require development.Read 3 Oct 2026 · clicksign.com

Free plan

NoRead 20 Sep 2026 · developers.clicksign.com

Integrations

The maker lists API, Zapier, Salesforce, and TOTVS as ways to connect Clicksign with business systems.Read 3 Oct 2026 · clicksign.com

Support

The API documentation links users to Clicksign support, and the pricing page lists priority support for the Advanced plan.Read 3 Oct 2026 · developers.clicksign.com

Founded

2010Read 28 Sep 2026 · developers.clicksign.com

API availability

The integrations FAQ says API access is available on all plans, while API integrations generally require development and technical support.Read 3 Oct 2026 · clicksign.com

API format

The Envelope API uses JSON:API formatting for requests and responses.Read 3 Oct 2026 · developers.clicksign.com

Billing basis

The integration page says customers pay for documents finalized by all signers, rather than documents merely sent.Read 3 Oct 2026 · clicksign.com

Embedded signing

The integration page says the embedded widget can place the signature flow directly inside a website or application.Read 3 Oct 2026 · clicksign.com

Hosting and encryption

The homepage states that Clicksign uses AWS Multi-AZ infrastructure, TLS 1.3 in transit, and AES-256 at rest.Read 3 Oct 2026 · clicksign.com

Legal framework

The maker says its electronic signatures comply with Brazilian Provisional Measure 2.200-2/2001 and Law 14.063/2020.Read 3 Oct 2026 · clicksign.com

Sandbox

The integration page describes an unlimited, free sandbox for testing integrations before launch.Read 3 Oct 2026 · clicksign.com

Security certifications

Clicksign says it holds ISO 27001 and ISO 27701 certifications for information security and privacy.Read 3 Oct 2026 · clicksign.com

Security practices

The security page describes least-privilege access controls, periodic vulnerability testing and risk assessments, backups, and annual independent audits.Read 3 Oct 2026 · clicksign.com

Webhooks

Webhooks send HTTP POST notifications to a registered URL when a signature event occurs.Read 3 Oct 2026 · developers.clicksign.com

Plans and prices

Every Clicksign API plan and price →

Where Specifiction places it

• E-Signature Software#24 of 688.3
• Digital Signature API Software#11 of 288.3
• E-signature tools#47 of 687.6