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API-first · for developers

From data to documents,
in one call.

Send the JSON your system already has, get the laid-out PDF back. With the same API you send it for electronic signature and follow its status. The whole suite is an API: no SDK to install, no plugin, no console to learn before the first call.

Create an account Read the documentation

Nothing to install, no sales call. The documentation is public and the contract is machine-readable — if an agent writes your integration, give it that.

First PDF in 5 minutes Account, key and a sample template ready.
Errors you can branch on A stable code, a four-digit number, retryable.
Signatures with evidence Certificate, fingerprint and event trail.
One callcomposes and sends for signature
POST /api/v1/flow

{
  "data": { … },
  "settings": { "templateId": "contract" },
  "signature": {
    "signers": [
      { "name": "Mario Rossi",
        "email": "mario@acme.example" }
    ]
  }
}

→ 202  application/json

One suite, three products

The whole life of a document,
from data to archive.

Three tools that also work on their own. Together they cover the whole path: compose, sign, keep track.

Composer Fly

Turns structured data into finished documents, from Word, Excel or HTML templates.

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Signer Fly

Sends for signature, collects the signatures and keeps the evidence.

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Document Fly

Composes the document and sends it for signature in one call.

Learn more

Who it is for

Built for teams whose software makes the documents

  • Software houses and B2B SaaS

    Your product has to produce contracts, reports or invoices and you do not want to maintain a PDF generator. Call it and move on.

  • System integrators

    One engine for every client, with separate organisations, keys, templates and usage. Change a document without a deploy.

  • Salesforce and Odoo partners

    No CRM logic inside: call it from Apex, a flow or a script and attach the PDF back to the record.

  • Companies with an IT team

    Documents are updated by whoever writes them, by uploading a new template version.

  • Teams automating with an agent

    /llms-full.txt is the whole contract in one file, generated by the running service. Give it to your coding agent.

  • Teams that need it to hold

    Every signature carries a certificate, a fingerprint and an event trail, kept for ten years.

Security

Other people's documents.
Treated that way.

What goes through here is contracts, payslips, reports. The choices below are the ones we made, not a list of good intentions. The service is hosted in Europe and run by us; we do not claim certifications we do not hold.

  • Real isolation between organisations: one cannot reach another's data, and trying gets a "does not exist", not a "not allowed".
  • Files encrypted at rest, with a key that never leaves the server.
  • Console sign-in with a second factor, and a log of who did what.
  • A no-retention mode: the document is made, delivered and not kept — nor the data that made it.
  • Nightly backups and a restore drill, because a backup nobody restored is not a backup.

No friction

What costs days elsewhere is not here

  • No approval to go live

    Sign up and the account is active at once. Production needs no review: only credit.

  • Try it free, with the real call

    With isTest the same call spends no credit: same address, same key.

  • Every call says what it cost

    Item by item. Out of credit, a refusal with a code, never a pricier plan behind your back.

  • Errors you can read

    A stable code for every outcome, explained in the guide; missing fields listed by name.

  • See what happened, and run it again

    A curl command for every document, Send again for every webhook, your keys' errors by code.

  • The PDF looks like your Word file

    We tell you which Word fonts are missing and what replaces them, as soon as you upload a template.

Questions

What people ask

Do I need to install anything?

No. It is an HTTP API with a Bearer key: any language that can make a POST is already a client. There is no SDK to update and nothing runs on your side.

How long until my first PDF?

A few minutes. The account comes with an API key and a sample template already uploaded, and the welcome page prints the complete command with the key and template id in it.

What kind of signature is it?

A simple electronic signature (SES) under eIDAS. The qualified electronic seal and qualified timestamp are available (2 credits, 6 with the timestamp): the seal attests the file's origin and integrity, not who signed. AES and QES are coming soon: until then asking for one is refused explicitly.

How much does it cost?

Pay as you go with prepaid credits at €0.10 each (VAT excluded) that never expire: a composed document costs 2 credits (€0.20), a signature request 10 credits (€1.00), document and signature in one call 12 credits (€1.20), a verification text message 2 credits. A top-up goes from €10 to €1,000, VAT excluded. Sign-up includes 25 free documents, no card. The full price list is at /legal/prezzi (in Italian).

Who can sign up?

Businesses and professionals with a VAT number. The service, the contract and the legal documents are Italian; the documentation and the console are in English.

Where does my data go?

To a server in Europe, encrypted at rest. You can also ask for nothing to be kept: with dataless the document is made, delivered and forgotten — neither your data nor the PDF. It costs the same, because the work was done.

Start today

Your first document in a few minutes

Create an account, upload a template, make the first call. There is nothing to install.

Create an account Read the guide

Sign-up includes 25 trial documents. No credit card. For businesses and professionals with a VAT number.