Clicksign API
Clicksign API: A Brazil-focused signing API with embedded workflows, webhooks and sandbox environments. Ranked #27 of 28 in Digital Signature API Software by our editors (6.6/10); pricing: Paid; best for brazil-focused teams needing embedded API signing.
At a glance
- Editor score6.6 / 10
- PricingPaid
- Best forBrazil-focused teams needing embedded API signing
- Free planNo
- Founded2010
- Facts checked20 Sep 2026
Where it wins
- Embedded signing with sandbox and production environments
- Authentication options include tokens, biometrics and certificates
- Webhooks, status queries and signed-document retrieval
Where it doesn't
- No free plan is offered
- Listed integrations are limited to Postman and Insomnia
- The paid-only model may not suit small trial projects
Our verdict on Clicksign API
Clicksign API provides REST endpoints for adding electronic signatures to business systems. It is aimed at teams automating document-signing workflows and customer-facing transactions, particularly those needing embedded signing inside an external application. Developers can create envelopes with multiple documents and signers, configure authentication methods, monitor document and envelope status, retrieve signed-document download links, and receive webhook notifications for document and envelope events. The API supports web, API and self-hosted deployment contexts, and Clicksign was founded in 2010.
The product’s plan structure covers progressively broader automation needs. Start includes API integration, email-based signing and batch document signing. Plus adds WhatsApp sending, biometric or selfie verification and brand customization. Automação focuses on document operations with template-based generation, forms, spreadsheet-based bulk sending and signer attachments. Avançado adds the full API, white-label API, API/SDK automation, unlimited users and priority support. According to the vendor’s pricing page, the paid offering starts at 135 Brazilian reais, with an introductory first-payment discount displayed separately from standard pricing.
Its strongest fit is for organizations that need a programmable signing layer rather than a standalone signing interface. Sandbox and production environments support separated development and live workflows, while JSON:API-compliant requests and responses provide a defined API format. Code examples are available for Node.js, Python, Ruby and PHP, and an embedded signing widget can operate inside a customer application. Postman and Insomnia are the listed integrations, so teams seeking a broader prebuilt application ecosystem may need to plan around direct API work. Choose Clicksign API for embedded, Brazil-focused signing automation; consider another option if a free plan or wider integrations are central requirements.
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Clicksign API pricing
All 4 Clicksign API plans and prices →
Clicksign API fact sheet
| Free plan | No |
|---|---|
| Paid from | Not verified |
| SDK languages | Not verified |
| Embedded signing | Yes |
| Identity verification | Yes |
| Workflow status API | Yes |
| Webhook event types | Not verified |
| Signed-file retrieval | Yes |
| Sandbox environment | Yes |
| Deployment | Cloud, Browser extension, Self-hosted |
| Platforms | Web |
| Support | Email, Docs |
| Built for | Small business, Mid-market, Enterprise (editorial estimate) |
| Integrations | 2 integrations: Postman, Insomnia |
| Pricing | Paid (source) |
| Website | developers.clicksign.com |
| Facts checked | 20 Sep 2026 |
Clicksign API integrations
Clicksign API lists 2 integrations on its own site.
- Postman
- Insomnia
Alternatives to Clicksign API
- DocuSign eSignatureA broad eSignature platform with API automation, workflows, integrations, and mobile signing.9.4
- BoldSignA low-cost signing platform with broad workflow, integration, and API coverage.9.2
- Zoho SignA Zoho-focused signing platform with REST APIs, webhooks, SDKs, and a free tier.9.1
See all Clicksign API alternatives →
Also Ranked In
Clicksign API is ranked in 2 of our directories.
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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