legesis
Evidence, on the record

The legal-grade signing surface for teams that close in hours, not weeks. eIDAS, ESIGN and UETA-compliant. Every signature carries a continuous chain of custody.

Trusted by teams
NorthwindAtwater & KleinOberonVantage
MSA · 2026-001
Page 4 of 12
Signatures required
Full name
Elena Rivas
Date
2026-04-20
Signature
Verifying · hash ledger
v.legesis
Audit · sealed
0x7f41 · verified
Try it · twelve seconds

Watch a contract close, on the record.

A loaned demo, no signup required. The signature is drawn, the seal is stamped, and the audit ledger writes itself.

Walkthrough: a sample contract loads, recipient Jordan Hayes is added, the signature field highlights, a signature is drawn, the document is verified and sealed, and four audit-log entries appear.

Audit · sealed
  1. 14:04:12Document openedjordan@hayes.law
  2. 14:04:43Identity verifiedjordan@hayes.law
  3. 14:05:08Signature capturedjordan@hayes.law
  4. 14:05:09Sealed · 0x7f41…legesis-ledger
NorthwindAtwater & KleinVantage RealtyOberon StudioStellwagMarquee LawHearst LabsHalcyon HRPaperlineFerrer GroupKindredWakefield
A contract tool, not a checkbox

Built for the agreements that actually matter.

legesis is designed for people who spend real time on contracts. Not a checkbox next to “e-sign” — an instrument for the people who close the work.

For senders

Send without ceremony.

Drag a PDF in, tap where signatures go, pick recipients, click send. Forty seconds, most of the time.

For signers

Sign without friction.

Sign on any device, in any browser, no account required. We designed the signer experience first — the rest follows.

For builders

Ship without reinventing.

Embeddable iframes, webhook events for everything, typed SDK, and a sandbox that costs nothing to hammer.

Chapter one

Send in seconds.

Upload any PDF. Place fields by dragging. Add signers. Send. We took the things that used to take ten minutes and made them take forty seconds. Most customers send their first document without reading any docs.

Envelope · create
Step 2 / 3
Estimated send time 00:42
  1. 1Upload
    MSA – Elena Rivas.pdf
  2. 2Place fields
    3 fields placed
  3. 3Add signers
    Pending
Draft auto-saved
Send envelope →
Audit · Envelope #2026-001
Sealed
  1. 14:02:08
    Envelope created
    e.rivas@northwind.co
  2. 14:02:11
    Sent to signer
    m.odum@atwater.com
  3. 14:03:45
    Opened · iPad · 72.14.3.9
    m.odum@atwater.com
  4. 14:05:22
    Signed · Ink stroke verified
    m.odum@atwater.com
  5. 14:05:23
    Certificate sealed · 0x7f41…
    legesis-ledger
Hash chain · verified0x7f41·8c29·11ab·…
Chapter two

Evidence you can trust.

Every event lives on a tamper-evident hash ledger — who opened the envelope, from where, on what device, at what second. Our audit certificate reads like an affidavit, because that's what courts want it to look like.

Chapter three

For teams who build.

Every pixel of legesis is exposed through a clean REST API. Envelopes, templates, webhooks, signer management, iframe embeds — documented, typed, and indifferent to your stack.

POST · /v1/envelopes
201 · sealed
// Send an envelope for signing
const envelope = await legesis.envelopes.create({
  template: "msa-starter",
  signers: [{ email: "elena@northwind.co" }],
  webhookUrl: "https://yours.app/hooks/legesis",
});

// => { id: 'env_9PK…', status: 'sent' }
Signed by

What teams say after they switch.

We replaced a three-vendor contract stack with legesis in a weekend. The audit certificate alone paid for the switch.

Elena Rivas
General CounselNorthwind

The fastest send I've seen. Our sales team went from eight minutes per MSA to under one.

Marcus Odum
VP of OperationsAtwater & Klein

The API is everything a developer wants and nothing they don't. Webhooks that actually retry. Types that match reality.

Priya Venkatesh
Staff EngineerOberon Studio
Pricing

Priced for humans, not procurement.

See all plans
Free

For trying it out.

$0/mo
  • 5 envelopes / month
  • 1 signer per envelope
  • Audit trail
  • Custom branding
Start free
Most loved
Starter

For a small team in motion.

$19/user/mo
  • Unlimited envelopes
  • 5 signers per envelope
  • Custom branding
  • Templates & reminders
Start free · upgrade later
Business

For teams who ship contracts daily.

$49/user/mo
  • Everything in Starter
  • Unlimited signers
  • REST API + webhooks
  • SSO (SAML / Google)
Talk to sales
Trust

Compliant, encrypted, accountable.

  • eIDAS
  • ESIGN
  • UETA
  • AES-256
  • SOC 2 · ready
Our security
Start today

Five free envelopes, no card. You can upgrade, downgrade, or walk away — we designed it that way.

No card required · 5 free envelopes · Cancel anytime.