Electronic Signature API — SignatureAPI

Integrate Electronic Signatures

The modern way to collect e-signatures in your apps and workflows, at any scale.

Integrate electronic signatures into my app or platform

Automate sending and tracking documents for signature

Best in class

experience

Reliable, intuitive API that let you define your entire electronic signature workflow programatically, giving you maximum flexibility to fit any use case.

https://api.signatureapi.com/v1/envelopes

Content-Type: application/json

X-API-Key: test_key_ae18de8…

{

"title": "NDA Agreement",

"topics": [ "human_resources" ],

"routing": "sequential",

"sender": {

"name": "John Doe",

"email": "john@example.com"

"documents": [

{

"url": "https://bucket.s3.com/123456.docx",

"format": "docx",

"data": {

"unit": "100B",

"tenant": "Jane Smith"

}

"recipients": [

{

"type": "signer",

"key": "tenant",

"name": "John Doe",

"email": "john@example.com"

{

"type": "signer",

"key": "landlord",

"name": "Mr Landlorf",

"email": "land@example.com"

}

]

}

Document Templates

Your Branding

Track Every Signature

We provide a full-featured dashboard for you and your team to track signing activity, designed to handle high volumes of transactions.

Features to build on

Multiple recipients

Parallel or Sequential Signing

Bundle Documents

Languages & Localization

Accountless Signing

Real-Time Notifications

Legally‑binding signatures worldwide

Our electronic signatures are globally recognized and legally binding, in most countries offering the same legal standing as traditional ink signatures on paper.

ESIGN Act

The Electronic Signatures in Global and National Commerce (ESIGN) Act, passed in 2000, legally recognizes electronic signatures and records in US commerce.

UETA

The Uniform Electronic Transactions Act (UETA) aims to provide uniformity and consistency across states in the US by standardizing the legal treatment of electronic records and signatures.

eIDAS

The Electronic Identification and Trust Services (eIDAS) Regulation, effective since 2016, standardizes and legally recognizes electronic signatures across the European Union. Our signatures are classified as eIDAS SES.

International

Several international regulations recognize the legality of electronic signatures, ensuring their validity and enforceability in many jurisdictions around the globe.