> For the complete documentation index, see [llms.txt](https://docufi3d.gitbook.io/docufi3d/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docufi3d.gitbook.io/docufi3d/technical-documentation/pay-per-use-model.md).

# Pay-per-Use Model

### 💳 Pay-per-Use Model

Docufi3d operates on a **transparent pay-per-use pricing model**, designed to ensure fairness, flexibility, and cost-efficiency for both individual users and enterprise clients.

***

#### 🔄 How It Works

Users pay only for what they use — no subscriptions, no hidden fees.

1. **Base Usage (Free Tier)**
   * Upload 1 document
   * Up to 50 pages
   * Up to 5 signatures\
     → Free of charge during the trial period, default is **1 EUR or 1 ADA per signature**
2. **Beyond Free Tier**
   * **+1 EUR or 1 ADA per additional page** 
   * **+1 EUR or 1 ADA per additional signature**
3. **Activation Logic**
   * System automatically calculates the cost before initiating payment
   * Payment required before sending invites

***

#### 💰 Supported Payment Methods

* **EUR** via Stripe / PayPal
* **ADA** (Cardano)
* **IAMX** tokens
* Voucher Code
* Post-Paid Invoicing for Enterprise Partners

***

#### 🛠️ System Details

* Backend and frontend payment logic fully implemented
* Usage tracking and billing are automated

***

#### ✅ Benefits

* No lock-in or subscription
* Predictable and granular pricing
* ADA and token-ready for Web3 adoption
* Enterprise-friendly with automated billing options


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://docufi3d.gitbook.io/docufi3d/technical-documentation/pay-per-use-model.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.