zSign
Send documents to sign with your fav AI agent
One time feeAPIWorkflow automationAI3 impressionslaunches Nov 31 comment
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In the first five minutes you can curl a PDF to get a signing URL and send it for signature. We built zSign to let developers and AI agents add legally binding e‑signatures without per‑seat fees, using a simple REST API or dashboard. It handles audit trails, white‑label branding, and prepaid envelope pricing. Let us know what you think 😊
- Legally binding e‑signatures via one API call
- Zero‑human onboarding with prepaid credits
- Optional white‑label branding for custom UI
- REST API for sending PDFs and tracking envelopes
- Supports placeholder tags for signature fields
zSign provides legally binding e-signatures via a pay-per-envelope model, usable from a dashboard, API, Zapier or AI agents.
- for
- Developers and teams building apps or AI agents that need automated e-signatures.
- pricing
- freemium · free trial
Key features
- No per-seat pricing — Pay only for envelopes sent; add unlimited teammates at no extra cost.
- Multi-channel sending — Send envelopes from the dashboard, Zapier, REST API or the MCP server.
- AI-agent ready — Agents can generate PDFs with placeholder tags and send them via API or MCP.
- Tamper-evident audit trail — Each view and signature is logged with IP, timestamp and SHA-256 document hash.
- White-label branding — Remove the zSign badge, use your own domain and email for signing pages.
- Template links — Create reusable signing links without writing code.
Use cases
- Automate contract signing in CI/CD pipelines
- Enable AI assistants to collect signatures on generated agreements
- Integrate e-signatures into SaaS onboarding flows without per-user fees
zSign pricing
- Starter$27/pack50 envelopes · 54¢ per envelope
- Growth$87/pack250 envelopes · 34.8¢ per envelope
- Scale$297/pack1000 envelopes · 29.7¢ per envelope
- White-label$49/monthYour branding on signing pages · 100 envelopes/month included
zSign vs alternatives
 zSign |  Zapier |  Make |  n8n |  Insomnia | |
|---|---|---|---|---|---|
| Best for | Pay-per-envelope e-signatures | General no-code automation | Visual workflow builder | Self-hosted workflow automation | API testing and debugging |
| Pricing | Freemium | Subscription | Subscription | Subscription | Free |
| DevHunt upvotes | 1 | 0 | 0 | 0 | 0 |
| Launched | Nov 2026 | — | — | — | — |
- zSign vs Zapier: Zapier offers generic workflow automation but not a dedicated e-signature service with per-envelope pricing.
- zSign vs Make: Make provides visual workflow automation; lacks built-in legal e-signature compliance and audit trail.
- zSign vs n8n: n8n is an open-source automation platform; it can call e-signature APIs but does not provide a native signing product.
- zSign vs Insomnia: Insomnia is an API client for testing; it does not offer e-signature functionality.
zSign FAQ
How does pricing work?+
You buy prepaid envelope credits (1 credit = 1 envelope). Credits never expire and there is no subscription or per-seat fee.
What happens if I run out of credits?+
The API returns a 402 error; you can top up credits via the Stripe Checkout endpoint.
Are signatures legally binding?+
Yes, zSign complies with ESIGN, UETA and provides a tamper-evident completion certificate.
How do I integrate with AI agents?+
Agents can use the MCP server or REST API to upload PDFs with placeholder tags and send envelopes programmatically.
What does the white-label plan include?+
For $49 /mo you get your logo, colors, custom domain, email domain and 100 envelopes each month; extra envelopes are purchased via credit packs.
Is a credit required to create an account?+
No credit card is needed; email verification grants 3 free credits, and referrals grant 25 free credits.
Summarized by DevHunt from zsign.io · Nov 1, 2026. Details may change; check the official site.
