Contracts signed with one API call

Stop building contract workflows from scratch. Send, track, and automate legally-binding signatures in minutes.

Terminal — API Request
$

One API call. Contract sent. It's that simple.

API document signatures with markdown templates. No monthly fees, no per-seat pricing. Just load your balance and send contracts programmatically.

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New accounts get 20 free contracts to try the service. No credit card required.

Built for developers

Simple, powerful integratable workflows for document signing.

API-First Design

RESTful API with comprehensive SDKs. Send contracts programmatically in seconds.

Markdown Templates

Define templates in Markdown with variables. No complex document formats required.

Webhooks

Real-time notifications for views, signatures, completions, and more.

Instant Delivery

Contracts are delivered and signed in real-time. No delays, no queues.

Legally Binding

Compliant e-signatures with full audit trails and certificate of completion.

Template Variables

Dynamic fields for names, dates, custom data. Auto-populate from your database.

AI Document Review

Reviewing document...

Checking grammar, legal terms, and formatting

Missing signature field

Line 47: Add {{client_signature}} variable

Clarity improvement

Consider rewording "effectuate" to "implement"

Review complete

2 issues fixed, document ready to send

AI-Powered

Intelligent document review before sending

Our AI-powered review tool automatically scans your contracts before they're sent, catching potential issues and ensuring professional, error-free documents every time.

Smart error detection

Catches typos, grammatical errors, and formatting inconsistencies automatically

Compliance checks

Ensures required clauses are present and terms are legally sound

Variable validation

Verifies all template variables are filled and formatted correctly

Instant suggestions

Get real-time improvements for clarity, tone, and professional language

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Import in seconds

Upload your docs, we'll handle the rest

Already have contracts in Word format? Simply upload your .docx files and we'll automatically convert them to powerful Markdown templates. Keep your existing formatting while gaining the flexibility of variable substitution and programmatic control.

Drag and drop upload

Upload .docx or .doc files directly to create templates instantly

Smart conversion

Headings, lists, tables, and formatting are preserved automatically

Add variables anywhere

Insert {{variables}} to make any field dynamic and data-driven

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Word document → Markdown template

service-agreement.docx

Uploaded just now

# Service Agreement

This Agreement is entered into by:

**Client:** {{client_name}}
**Provider:** {{provider_name}}

## Services

{{service_description}}

## Compensation

Total: {{total_amount}}

---

**Signature:** {{client_signature}}

Stop overpaying for signatures

Traditional e-signature platforms charge monthly fees plus per-envelope costs.

We charge $0.25 per contract. That's it.

Best Value
API Sign

$0.25

per contract

$0

monthly fee

no lock-in

Compare with others

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$2.00+/ea+$35 - $65/mo
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$1.25 - $2.50/ea+$20 - $50/mo
SignNow
$1.00 - $2.00/ea+$20 - $40/mo
eSignatures
$0.49/ea+$0
Signaturely
$0.40 - $0.99/ea+$25 - $199/mo

Pay as you go

Load your account balance and send contracts. No monthly minimums or commitments.

Auto-reload

Keep a card on file and set thresholds. We'll auto-reload when your balance runs low.

No surprises

Every contract costs $0.25. No hidden fees, no per-seat charges, no API rate limits.

Real-time webhooks

Get instant notifications when contracts are viewed, signed, or completed. Build automated workflows triggered by signature events.

contract.viewed
Signer opened the contract
contract.signed
Signer completed their signature
contract.completed
All parties have signed
contract.declined
Signer declined to sign
contract.expired
Contract passed expiration date
Webhook payload
{
  "event": "contract.signed",
  "timestamp": "2024-01-15T10:30:00Z",
  "data": {
    "contract_id": "con_xyz789",
    "signer": {
      "name": "Jane Smith",
      "email": "jane@company.com"
    },
    "signature_ip": "192.168.1.1",
    "signed_at": "2024-01-15T10:30:00Z"
  }
}

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