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Atlas E-Signature API

Contract review and CLM · by Atlas

REST API for creating, reviewing, sending, and tracking e-signature envelopes from PDF or DOCX with field detection, webhooks, and audit trail.

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Where it ranks

Current edition · updated Oct 20, 2026

What it does

REST API for creating, reviewing, sending, and tracking e-signature envelopes from PDF or DOCX with field detection, webhooks, and audit trail.

  • Sending contracts for human e-signature from AI agents or chat
  • Embedding e-signature into SaaS products via platform API
  • White-label signing workflows for agencies
  • Marketplace e-signature with per-seller billing
Category
Contract review and CLM
Users
Developers, Agencies, Founders, Legal ops teams and 2 more
Public API
Available

Not yet disclosed: deployment options, platforms, languages and support channels.

Pricing

  • Free plan$0
  • Usage-based$99.99/month
    • For 10 runs
    • With extra runs $7 each

Prices as published by Atlas, checked Oct 2026.

Security and compliance

As reported by Atlas. Ask for audit reports before you buy.

  • HIPAACompliant
  • AES-256 encryption at rest
  • TLS 1.2+ encryption in transit
  • HMAC-SHA256 webhook signatures
  • SHA-256 document hashing
  • Cryptographic audit trail
  • Multi-signer per-party tokens
  • Service-role database access restriction
  • Turnstile abuse prevention at signup
  • Rate limits on sensitive endpoints

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