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Aiden Contracts

Contracts
with legal signatures,
in minutes.

Create, send and sign documents that are fully valid in the UK and the US. Ready-made templates, eIDAS electronic signatures and secure archiving. Forget DocuSign.

Included in every Aiden Startup plan
See the full suite
Services agreement Signed
Aiden Founder
Signed · Oct 13, 2026 · 14:32
Fully legally binding

Sign with confidence,
archive with peace of mind.

eIDAS electronic signature

Complies with eIDAS (EU), the eSign Act (USA) and UK law. Legally equivalent to a handwritten signature.

Templates for your jurisdiction

NDAs, service agreements, partner agreements, employment contracts. Tailored for the UK and Delaware, ready to sign.

Full traceability

Every signature includes a certified timestamp, IP address, device and the signer's verified email. Downloadable audit trail.

Send in 1 click

Upload a PDF, mark where each party signs and send it. You'll be notified when it's complete.

Multiple signers

Set the signing order and each party's role. Ideal for partner agreements or contracts with clients and suppliers.

Cloud archiving

All your signed contracts stay accessible forever from your dashboard. Search by client, date or type.

How it works

From document to
legal record,
with no friction.

Four steps to send your first signable contract. Ready-made templates or upload your PDF.

1

Choose a template or upload a PDF

Start with a validated legal template (NDA, MSA, services agreement, partner agreement) or upload your own document.

2

Mark where to sign

Drag signature zones, initials and editable fields onto the document. Set the order if there are multiple signers.

3

Send and track

Each signer receives a secure email. Calendar notifies you when someone opens it, signs it, or gets stuck.

4

Automatic legal filing

Once everyone signs, the document is archived in your dashboard with a complete audit trail: timestamp, IP, device and verified email.

Aiden Contracts vs DocuSign

Templates for your jurisdiction, not generic ones.

DocuSign is solid. But its templates are generic and don't know whether your company is a UK Ltd or a Delaware C-Corp. Aiden Contracts does.

Aiden Contracts
DocuSign
eIDAS / eSign Act electronic signature
Downloadable audit trail
Multiple signers
Ready-made templates for UK Ltd
Ready-made templates for Delaware C-Corp
Auto-fills client tax details
Validated by Aiden legal advisors
Filed in your Aiden company folder
Soporte humano en español <24h
Monthly cost
Included
$25/month
Use cases

For any kind of contract.

Ready-made templates or upload your own document. The signature is always legally binding.

Freelance

Service agreements, NDAs, signable proposals. Close the deal without waiting on your accountant.

Agency

MSAs with clients, project SOWs, employment contracts for freelancers working with you.

SaaS

NDAs before enterprise demos, MSAs with security riders, DPAs (GDPR), partner agreements and advisor agreements.

Native integration

Connected to the Aiden dashboard.

Auto-fills every template with your tax details and your client's. Securely filed in your company folder.

  • Auto-fills NIE/EIN, address and jurisdiction
  • Templates validated by Aiden legal advisors
  • Filed in your company folder with an audit trail
  • Your advisor accesses the contract if they need to review it
Interactive demo

Try it yourself.

Upload a document, mark the signature zone, sign it by drawing with your mouse. Real demo, nothing gets sent.

aiden.es/sign/contrato-12
DEMO
Aiden Contracts
Step 1 of 4 · Upload your document
Upload your document or use a template
Accepts PDF, DOCX up to 10MB · Or choose a validated template
Or start with a template: NDA Service agreement Shareholders' agreement
Frequently asked questions

Everything you want to know.

Does an electronic signature have the same legal validity as a handwritten signature?

Yes, full equivalence. We comply with eIDAS (EU), the eSign Act (USA) and UK legislation. In the event of a dispute, the audit trail with a certified timestamp has evidentiary value.

What if I need a qualified signature (eIDAS QES)?

For qualified signatures with a digital certificate, we offer integration with certified providers (Camerfirma, FNMT). Available on the PRO plan.

Can I upload my own contract in Word or PDF?

Yes. Upload any PDF or Word file. Make it signable in seconds by dragging signature fields onto the document.

How do I handle contracts in other languages?

Templates are available in Spanish and English. For other languages, you can upload your own document. The signer's interface is multilingual.

Can I invalidate a signed contract?

Yes. You can void a contract and create an addendum or new version. The cancellation is logged in the audit trail for traceability.

Does Aiden act as a legal witness to the signature?

We are not a party to the contract, but we generate a neutral audit trail with a certified third-party timestamp. That's what makes the signature legally valid.

Sign your first contract today.

Activate Aiden Contracts from your dashboard. Templates ready to get you started.

See the full suite