SignatureAPI – Electronic Signature API
Hey HN! Victor here from SignatureAPI (https://signatureapi.com) SignatureAPI is an electronic signature platform via API. Our customers use SignatureAPI to add electronic signatures to their apps and workflows. SignatureAPI was born out of the frustration of a friend of mine who needed to integrate electronic signatures into his app, but found Docusign API, at $1+ per envelope, too expensive for his use case. We quickly realized that many others shared this same frustration. We are different from other platforms such as Docusign, Dropbox Sign, Adobe Sign, etc in two key ways: 1.…
SignatureAPI – Electronic Signature API launched on October 1, 2024 with 22 votes, #820 of 5,185 launches that month and more than 75% of that year's launches. The site was still online in September 2026, 2 years on.
In plain words
SignatureAPI is an electronic signature platform designed as an API-first solution for developers who need to add digital signatures to their applications and workflows. It serves software companies and developers seeking a cost-effective alternative to established providers. The platform distinguishes itself through prioritized developer experience and comprehensive documentation, positioning the API as the core product rather than an afterthought. Pricing ranges from $0.10 to $0.25 per envelope, significantly undercutting competitors' rates.
written from the facts on this page · September 2026
From the sources
Integrate legally binding e-signatures into your apps and workflows with our award-winning, developer-friendly API and integrations — starting at just $0.25 per document.
The modern way to collect e-signatures in your apps and workflows, at any scale. Our clean, minimal signing interface keeps your signers focused on the task . Make it easy to your signers to sign using our minimal signing interface, designed to make the signers focused to the taskfrom signatureapi.com
In the maker’s words, at launch
Hey HN! Victor here from SignatureAPI (https://signatureapi.com) SignatureAPI is an electronic signature platform via API. Our customers use SignatureAPI to add electronic signatures to their apps and workflows. SignatureAPI was born out of the frustration of a friend of mine who needed to integrate…
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