Buildoto
FRENFree audit · 30 min
Ready-to-use feature

Electronic signature in your app

Get your documents signed without leaving your product: contract generated, sent, signed, tracked, via API.

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Under the hood: Yousign / Documenso · API · webhooks · eIDAS. Shipped to production.

SMSébastien Mignot, designed and shipped solo, like beforbuild.com
signature.exemple.com
Signature · contrat-acme.pdf
Service contractPDF

Signature

Acme SAS

Signed · eIDAS2 / 2 signers

The problem

What slows you down, and what we change

Today

  • Getting signatures by email means back-and-forth and contracts dragging on.
  • Impossible to see at a glance who has signed what.
  • Re-entering data into every document multiplies errors.

With Buildoto

  • Signature integrated into your product, wrapped up in a few clicks.
  • Status tracked in real time, follow-ups triggered automatically.
  • The document is generated from your data, with no re-keying.

Deliverables

What you get, in production

01
Document generation
The contract or quote is produced from your data, ready to sign.
02
Signing journey
Signatories, order, follow-ups; eIDAS compliant (simple or advanced).
03
Real-time tracking
Statuses updated via webhook, nothing to chase by hand.
04
Customization & go-live
Connected to your app and your CRM, deployed and documented.

Proof in production

Electronic signature already runs on BeForBuild.com

On BeForBuild.com, the contract is generated, sent for signature and its status updated automatically, with no manual follow-up. This is the building block I adapt to your flow.

Visit beforbuild.com
eIDAS
signatures recognized across the EU
Webhooks
statuses in real time
1
point of contact
Fixed price

Base feature

990 € excl. VAT

+ customization quoted on your spec · fixed price signed before we start

Or 440 € HT/day on time and materials, adapted to your needs.

Book

Your free audit · 30 min

Pick a slot. We audit your case and you leave with a fixed-price quote.

FAQ

Frequently asked questions

SM

Who I am

A single point of contact, from quote to production

I design, develop and run my own features in production, BeForBuild.com, the B2B SaaS I run on my own, is the proof. These are the already-proven building blocks I offer you, adapted to your needs.

You talk directly to the person who delivers: no subcontracting, no agency layer. The one who designs is the one who codes and ships to production.

Founder of BeForBuild.comA single point of contactFrom quote to production launch

Stack & intégrations

Cloudflare
Supabase
React
shadcn/ui
TypeScript
Mistral
Stripe
Documenso

Resources

Further reading

Electronic signature API: comparison for SaaS (2026)

Which electronic signature API for your SaaS? Yousign, Documenso, DocuSign: integration, pricing, scalability, eIDAS. The developer guide.

Electronic signature for insurance brokers: IDD compliance and zero re-keying

Mandate, IFA, membership form: every policy subscription drags on for days waiting for signatures. How to generate and sign these documents automatically, with a compliant evidence file.

The best e-signature tools in 2026 (an honest comparison)

Yousign, DocuSign, Documenso, Dropbox Sign, Adobe Sign: there is no single "best" tool, there is the right one for your volume, your budget and your integration needs. A comparison without dogma, with verified prices.

Let's talk about your project

Book my free audit · 30 min