The DocuSign Alternative
DocuSign doesn't read your contracts. We do.
Seal is the first e-signature platform with AI built in from day one. We catch the clauses your lawyer would — before you ever hit send.
What Seal actually does
Three things the old tools can't do.
01 — AI REVIEW
AI that actually reads your contracts.
Most e-signature tools are glorified PDFs. Seal's AI reviews every clause before a single signature is collected — catching issues your lawyer would bill $800/hr to find.
- Missing signature blocks
- Non-standard liquidation terms
- Ambiguous jurisdiction clauses
Missing co-founder signature block — Page 6
Term sheets with multiple founders require all signatures. This document only captures one. The agreement may be unenforceable.
Fix this →
Unusual liquidation preference — §4.3
3× non-participating preference. Market standard is 1×. Significantly investor-favorable. Consider negotiating.
Pro-rata rights — standard
Participation rights look market-standard. No flags.
02 — SIGNING
Sign in under 60 seconds.
No app to download. No account required. Signers get a link, sign on any device, and you get a legally binding document with a full audit certificate.
03 — COMPLIANCE
An audit trail your lawyers will love.
Every action is timestamped, every signer verified, every IP logged. ESIGN Act compliant by default. When it goes to court, you're covered.
- ESIGN Act compliant
- Tamper-evident SHA-256 hash
- IP, device, and time on every event
Document completed
All 2 signers signed. Certificate generated.
Marcus Lee signed
192.168.1.42 · Safari 17 · iPhone 16
Sarah Chen signed
203.0.113.12 · Chrome 122 · MacBook Pro
Document sent for signing
Sent to sarah@acme.com, marcus@acme.com
Document created
Uploaded by jordan@vantage.co
Certificate ID: SL-2026-83F2A · SHA-256: a3f8c…
Trust & Security
Built for documents that matter.
When you're handling legally binding contracts, security isn't optional. Every feature is built with compliance and data integrity in mind.
ESIGN & UETA compliant
Legally binding electronic signatures with full consent workflows and disclosure records. Valid in all 50 US states.
Complete audit trails
Every view, signature, and action logged with timestamps, IP addresses, and SHA-256 document hashes.
Encrypted end-to-end
TLS in transit, encrypted at rest. Tamper-evident hashing ensures documents can't be modified after signing.
Built for speed
Average signing time under 60 seconds. No app downloads. No account required for signers. Just a link.
For developers
API-first, from day one
Build document signing into your product with a few API calls. Create documents, add recipients, collect signatures, and get webhook notifications — all programmatically.
- Full REST API with typed responses
- Webhooks for every document event
- OpenAPI spec for code generation
curl -X POST https://api.seal.co/v1/documents \
-H "Authorization: Bearer sk_live_..." \
-H "Content-Type: application/json" \
-d '{
"title": "Service Agreement",
"file_url": "https://...",
"recipients": [
{
"email": "jane@acme.com",
"role": "signer"
}
]
}'Pricing
Simple, honest pricing.
No per-envelope surprises. No seat minimums. Just documents, signed.
Free
For individuals getting started
- 5 documents per month
- Unlimited recipients
- Email notifications
- Full audit trail
- PDF download
- Team workspace
- API access
Pro
For teams that move fast
- Unlimited documents
- Team workspaces
- Custom branding
- Reusable templates
- Payments — one-time, recurring, installments
- REST API access
- Priority support
Need SSO, advanced compliance, or custom integrations? Talk to us
FAQ
Questions? Answers.
Everything you need to know about signing with Seal.
Yes. Seal complies with the ESIGN Act and UETA, making all signatures legally binding in all 50 US states. Every signature includes a comprehensive audit trail with timestamps, IP addresses, and document hashes.
The free plan includes 5 documents per month with unlimited recipients. No credit card required. Upgrade to Pro when you need more volume or team features.
Absolutely. Pro and Enterprise plans include team workspaces with role-based permissions. Admins can manage templates, view all documents, and control who can send.
Documents are encrypted at rest and in transit. Each signed document gets a SHA-256 hash for tamper detection. We use Clerk for authentication and Convex for real-time secure data storage.
Yes. Seal offers a REST API and webhooks for integration. Connect with your CRM, document management system, or build custom workflows using our API.
Ready to stop signing contracts you haven't read?
Free to start. No credit card required. Set up your first document in under two minutes.