AiroSign
E-signatures built into your own product. One request in, one sealed PDF out.
AiroSign
One request in. One sealed PDF out.
- 12,400
- documents sealed
- 3.1 min
- median time to sign
- 1 line
- to migrate from DocuSeal
- 2026
- launched · early access
01
Templates that fill themselves.
Upload a PDF or write HTML, then place signature, date and text fields for each signer. Values you post through the API arrive pre-filled and locked.
02
A document to sign, not a form.
Signers see the actual contract with every field highlighted in order, a Next button that walks them through, and a signature they can type or draw. It works the same on a phone.
03
Every document, live.
See who opened, who signed and who is still waiting, per recipient. Filter by status, export the list, and download completed files in bulk.
04
Evidence that holds up.
Each document carries a hash-chained audit trail of every event, with the time, IP and a hash linking it to the one before. The sealed PDF ships with a certificate page.
05
Anyone can verify it.
A public verification page confirms a document is sealed and unchanged, without an account, by checking the hash chain against the seal.
06
Built for developers.
Live and test API keys, signed webhooks for every event with delivery logs and retries, and an API that is compatible with DocuSeal, so migrating is one line.
What it is.
An electronic-signature platform for developers and SaaS teams who want signing to live inside their own product. Templates fill themselves from data you already hold, signers get a branded page you can embed, and when everyone has signed you receive a PKCS#7-sealed PDF with a hash-chained audit trail. Priced per completed document, not per seat, with a DocuSeal-compatible API.
Built for
- SaaS products embedding signing
- HR and onboarding flows
- Contractor agreements
- Property management
Runs on
- Next.js
- Postgres
- Object storage
- PKCS#7 signing
- Cloudflare
What makes it work.
01
Template, send, sign, seal, notify
Templates fill themselves from data you already hold. Signers get a page you can embed under your own brand. When the last signature lands, a signed webhook tells your system and a sealed PDF is ready to download.
02
Evidence a court can check
Every completed document carries a PKCS#7 seal, a certificate page and an append-only hash chain of events. A public verify page confirms any document without an account.
03
Signing that works on the phone in someone's hand
Fields stay reachable, the keyboard never covers the signature pad, and the flow completes on Safari, Chrome and inside an embedded page alike.
Everything it does.
- 01Templates from PDF or HTML
- 02Sequential or parallel signing
- 03Embedded, branded signing pages
- 04PKCS#7 sealed output
- 05Hash-chained audit trail
- 06Signed webhooks
- 07DocuSeal-compatible API
How it was built.
We can build this for you.
Product & SaaS development
From a written idea to a product with paying customers, built by people who run their own.
Integrations & APIs
Telephony, e-signatures, payments, maps and third-party data, wired into your product properly.
Product & brand design
Interfaces, identity and marketing sites for software, designed by the people who will build them.
Cloud, DevOps & maintenance
Hosting, deployments, monitoring and the on-call nobody else wants, for software that has to stay up.
Team extension
Senior engineers and designers who join your team for a season and work inside your process.