ESIGN & UETA Compliant

Agent identity attested · HMAC-signed audit trail

The E-Sign API your AI agents were missing.

Send any doc. Atlas finds the signature fields, fills in what it already knows, and emails the signer. One API call. No setup required. The more you use it, the less you have to do.

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Works with any agent platform

Claude

OpenAI

LangChain

LlamaIndex Cursor

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n8nAny HTTP client

200 OK · 1.1s

request

curl -X POST https://atlaswork.ai/api/envelope/upload \
  -H "Authorization: Bearer $API_KEY" \
  -F "file=@vendor-msa.pdf" \
  -F "signer_email=vendor@company.com" \
  -F "stamp_prefilled=true" \
  -F 'prefill_map={
    "Effective Date": "Apr 13, 2026",
    "Provider Name":  "Acme Corp"
  }'

response

{
  "sign_url": "https://atlaswork.ai/sign/env_...",
  "detected_fields": [
    { "label": "Effective Date", "stamped": true },
    { "label": "Provider Name", "stamped": true },
    { "label": "Signature", "stamped": false }
  ],
  "next_action": "Signer emailed. Await webhook."
}

stamped:true = burned in. Signer never sees it. stamped:false = goes to signer.

Backed by

Atlas vs DocuSign

Built for agents. Not humans.

DocuSign was built for a person clicking buttons. Every new document type needs a developer, a template, and a QA pass. Atlas handles any document on the first call and gets smarter with every contract you send.

DocuSign API calls
to send one contract

Atlas API call
fields detected automatically

	DocuSign	Atlas
Template required	Yes, for every document type	Never
Field detection	Manual drag-and-drop placement	AI detects on every call
New document type	Developer task + QA	Zero setup
Counterparty memory	None	Profiles built from every deal
Fields pre-fill	No	Yes, from prior contracts
API calls to send	Template setup + create + send	One POST
What comes back when someone signs	A PDF	Every field they filled in, as structured data

Compliance

An audit trail your legal team can stand behind.

Legally binding

ESIGN Act, UETA across all 50 states, and eIDAS. Every signed envelope is compliant out of the box.

Cryptographic proof

SHA-256 document hash on every envelope. HMAC-attested agent identity. Tamper-evident from submission to archive.

Full signer record

IP address, timestamp, and time-on-document logged for every signing event. Public verification URL included.

Webhook delivery

Signed payloads on every event. Automatic retries with exponential backoff. Your system stays in sync.

Atlas Context

Gets smarter with every deal.

Every time someone signs, Atlas remembers who they are. By the third contract with the same company, most fields are already filled. You stop repeating yourself.

Every envelope adds to a counterparty profile. Who signs, their jurisdiction, how long they take.
The second deal with the same company: Atlas already knows who signs for them.
Connect Google Drive, Dropbox, Box, or OneDrive to seed it with your existing archive.

Read the Context docs

Counterparty profile

3 agreements

Acme Corp

acme.com

Standard signatoryBob Jones, VP Legal

JurisdictionDelaware

Last agreementNDA · Jan 15, 2026

Avg time to sign4 min

Next envelope with Acme Corp

Counterparty name pre-filled automatically

Signatory name pre-filled automatically

Jurisdiction pre-filled automatically

Built for scale

Two ways teams use Atlas.

Whether you're a platform embedding signing into a product your customers use, or an enterprise wiring signing into an internal agent workflow, the integration is the same: one API call, one webhook, done.

Platforms building AI agents

Your agent completes the contract. Your customer never leaves your product.

CLM platforms, legal tech, HR software, fintech — if your product has contracts, your AI agent can send them. Atlas runs in your backend. Your customers sign through a link. Your webhook gets the executed document with all filled fields as structured data.

One API call per contract. No per-customer template setup.
White-label the sign page with your brand. Signers never see Atlas.
Webhook delivers filled_fields as JSON — ready for your database.

Enterprises building internal agents

Procurement, vendor onboarding, compliance — your agent handles the signing step.

Your internal AI agent surfaces a contract, pre-fills what it knows from your systems, sends it to the counterparty, and gets the signed copy back. No human routes the document. No DocuSign template to maintain for every new contract type.

Agent pre-fills from your CRM or ERP via prefill_map.
New contract type works on the first call. No setup.
Signed document and structured fields back in your workflow immediately.

Talk to us about your use case Read the docs

Works with your agent stack

REST API and TypeScript SDK. Works with LangChain, OpenAI Agents, LangGraph, Vercel AI SDK, and any HTTP client.

API & SDK

Add signing to your agent in one API call.

Book time with the team to get access.

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ESIGN Act · UETA · eIDAS · SHA-256 audit trail · HMAC agent identity · agent prefill · bulk send · SSE streaming · Atlas Context