e-signature, built for agents

The e-signature layer
for AI agents.

Usign gives your AI agent one MCP connection to draft, send, and track legally binding contracts, and to trigger whatever comes next. Drafts never send themselves. You stay in control of the moment that matters.

No card. No seats. The first 100 are yours for life.

Send the contract to maya@studio.co
Creator Agreement
ctr_8fK2a · v4
Draft Sent Signed
signer_name Maya Okonkwo
fee_amount $2,500 USD
signed · Maya Okonkwo
your next step
e-signature, built for agents

The e-signature layer
for AI agents.

One MCP connection to draft, send, and track legally binding contracts, and to trigger whatever comes next. Drafts never send themselves. You stay in control of the moment that matters.

No card. No seats. The first 100 are yours for life.

Send the contract to maya@studio.co
Draft Sent Signed
Powering contract workflows for teams that move fast.
first 100 free means you can try before any logo goes here
the shift

E-signature was built for someone clicking buttons. Your agent does not click.

Every signing tool assumes a human in a browser, uploading a file, dragging fields, hitting send. That model breaks the moment you put an agent in the loop. Usign was designed the other way around. The agent is the operator, and the human approves the moments that count.

The old way
Open a dashboard, upload a PDF, drag fields onto it
Click send and hope
Copy-paste IDs between five tools
Pay per seat, per month, forever
Usign With Usign
Describe the contract in one instruction
Draft, preview, then a deliberate send
One agent runs the whole chain over MCP
100 free for life, then 10 cents each
how it works

Five steps. Your agent runs all of them.

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Creator Agreement
ctr_8fK2a · v4
Draft
signer_nameMaya Okonkwo
fee_amount$2,500 USD
Confirm send
how it works

Five steps. Your agent runs all of them.

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use cases

One agent. One connection. Your whole contract workflow.

Because Usign speaks MCP, the agent that already runs your stack can run your contracts too. No integration project. No glue code. Just describe the workflow.

When a deal hits Closed Won, send our MSA and tell the AE in Slack
CRM
closed_won
U
Usign
draft → send
Slack
notify AE

A deal closes in your CRM. Your agent drafts the right contract, sends it, and pings the account owner. The signer gets a clean signing link. You did nothing.

When the contract is signed, kick off onboarding and file the PDF
Usign
signed webhook
Drive
file PDF
Project tool
onboarding

The moment a contract is fully signed, Usign fires a webhook. Your agent files the sealed PDF and spins up onboarding. Signing becomes the start of the next workflow, not the end of one.

bulk

Send one. Or send three hundred.

Usign creates up to 300 contracts in a single instruction. Your agent maps a list to a template, previews the batch, and sends. Pre-signing applies your signature automatically, so a 300-creator campaign is one instruction, not three hundred clicks.

300
contracts per instruction
1
step

Built for marketplaces, creator platforms, and agencies running contracts at volume.

Send the creator agreement to all 240 approved applicants
Sent 240
Signed 137

Approve a list. Your agent drafts every contract, previews them, and sends in one instruction. You are not signing 240 documents by hand.

safe by design

Agents propose. You dispatch.

The single most important design decision in Usign: creating a contract and sending it are two different actions. Your agent can draft and preview all day. Sending is always its own deliberate step.

Drafts never auto-send.

Creating a contract produces a draft, full stop. No email goes out until an explicit send. An agent cannot skip this.

Every send is auditable.

Each contract carries an append-only audit log: created, viewed, signed, with IP, timestamp, and document hash. The log is baked into the final PDF as legal evidence.

Void with a reason, anytime.

Made a mistake? Voiding is a first-class action and always records why. Nothing is silently undone.

NDA · Acme Studios
ctr_3pQ7m · created by agent
Draft Sent
agent is waiting at the send gate
Confirm send
This is the only action that sends. Nothing before it does.
real legal infrastructure

Agentic on the surface. Court-ready underneath.

Usign is not a lightweight signing widget. Every signed document is a PAdES-compliant PDF with a cryptographic signature, a SHA-256 content hash, and a complete audit log appended inside it. A court can verify the document without ever touching our servers.

CREATOR AGREEMENT
ctr_8fK2a
Maya Okonkwo · 2026-05-27T14:32Z
● created · 14:02 · 81.2.44.x
● viewed · 14:29 · 92.8.10.x
● signed · 14:32 · 92.8.10.x
ESIGN + UETA
Legally binding electronic signatures in the United States.
eIDAS (SES)
Simple Electronic Signatures recognized across the EU.
GDPR
Privacy-first. Right to erasure honored. No third-party trackers on signing pages.
SOC 2in progress
Built to SOC 2 controls.
Structured contracts, not brittle PDF overlays. Templates reflow cleanly when a name or amount runs long.
Immutable template versions. Six months later, you can prove the exact wording that was signed.
Append-only audit log with IP, user agent, timestamp, and geolocation at every step.
Read the security story
for builders

Connect Usign to your agent in minutes.

Usign ships a full MCP server, a Stripe-style REST API, and HMAC-signed webhooks. Connect it to Claude or any MCP-capable agent and start sending. Or call the API directly. Either way, the same primitives: workspaces, templates, merge fields, contracts, signers.

MCP-native.
Drop-in connection. Your agent gets tools to list templates, create drafts, preview, send, track, and void.
REST API.
Versioned endpoints for contracts, templates, the field registry, and webhooks. Idempotency keys built in.
Webhooks that chain.
Every lifecycle event fires a signed webhook with your own external_reference, so you can stitch Usign into anything.
Read the developer docs
> List my templates
Creator Agreement (v4) · NDA (v2) · MSA (v1)
> Draft the Creator Agreement for maya@studio.co, fee 2,500
Draft created · status: draft · id: ctr_8fK2…
> Preview it
Valid · 6 fields filled · 0 missing
> Send it
Sent · token minted · email dispatched
POST /v1/contracts
// create is always a draft — send is a separate call
{
"template_id": "tpl_creator_v4",
"signer": "maya@studio.co",
"fields": { "fee_amount": 2500 },
"dispatch": false
}
→ 201 · { "id": "ctr_8fK2a", "status": "draft" }
// then: POST /v1/contracts/ctr_8fK2a/send
pricing

First 100 contracts free. For life.

100
free, forever
then
10¢
each. that's it.

The first 100 contracts you send are free, forever, not for a trial month. After that, 10 cents per contract. That is the entire pricing page.

Free contracts 100 / 100
then 10¢ each
01

Sign up. Get 100 free contracts that never expire.

02

Send contracts. Watch your free balance, not a clock.

03

Past 100? It is 10 cents per contract. No minimum, no seat fees, cancel by simply not sending.

A 10-seat plan elsewhere can run thousands a year before you send a single contract. With Usign, ten seats cost nothing. You pay for outcomes, not logins.

Start free, 100 contracts on us

No card required to start.

Questions, answered.

{{ f.a }}

Your agent is ready to send. Are you?

Connect Usign, send your first contract, and let signing run itself. The first 100 are free for life.

No card. No seats. No catch.