SignatureAPI: Electronic Signature API
SignatureAPI helps developers and operations managers embed e-signature capabilities into their software. It is designed for businesses that need to automate document signing through a pay-per-transaction model.
At a glance
- Category
- Operations
- Best for
- Developers, SaaS platform owners, Operations managers, Businesses with high-volume signing needs
- Pricing
- SignatureAPI uses a paid model starting at $0.25 per document transaction.
- Key use cases
- SaaS Feature Integration, Automated Document Workflows, Multi-party Agreement Routing, Regulated Document Collection
- Integrations
- Power Automate, Zapier
- Official website
- signatureapi.com
SignatureAPI is a technical solution for businesses that want to collect electronic signatures within their own applications. It provides a REST API for developers and no-code connectors for automation platforms, which supports a customized signing experience.
The tool is designed for SaaS platforms and companies with document needs. It supports signing workflows, including routing documents to multiple people in a specific order and bundling up to 10 documents into one envelope.
Beyond the API, the service includes a dashboard for tracking signing activity and an AI Toolkit for agents to handle document tracking. The signatures are designed to be legally binding under regulations such as the ESIGN Act and eIDAS.
Buyers should confirm if their specific compliance needs—such as HIPAA or SOC 2—are met by the available configuration options, as some security settings require manual setup or specific requests to support.
Key Features
Allows developers to programmatically define electronic signature workflows.
Supports integration with platforms like Power Automate and Zapier to automate signing tasks.
Provides a signing interface that can be integrated into web or React Native apps.
Supports creating .docx templates with placeholders that are populated with dynamic data.
Supports sending documents to up to 10 signers either all at once or in a predefined order.
Enables recipients to sign documents without creating or logging into an account.
Provides notifications when envelopes are signed, completed, or canceled.
Designed to enable AI agents to send and track signed documents.
Use Cases
Integrating electronic signatures directly into a software platform's user interface.
Using no-code connectors to send contracts or waivers automatically when triggered by other apps.
Managing documents that require signatures from multiple stakeholders in a specific sequence.
Collecting signatures for healthcare or legal documents that support SOC 2 or HIPAA-compliant handling.
Best For
Integrations
Pricing
SignatureAPI uses a paid model starting at $0.25 per document transaction.
FAQ
Pricing is based on a pay-per-transaction model, starting at $0.25 per document.
No, the platform supports accountless signing, allowing recipients to sign without creating a login.
Yes, it supports HIPAA compliance, but it requires contacting support to request HIPAA mode and a Business Associate Agreement (BAA).
Yes, SignatureAPI provides no-code connectors for Power Automate and Zapier to help build signing workflows.
Source category: Operations
Source subcategory: Electronic Signature
