Sep 5, 2025 | 5 minutes
Make AI Agents cut farmers' invoicing time from 15 minutes to 20 seconds
Agentic automation transforms the invoicing process for Spanish farmers, demonstrating the real-world impact of Make’s AI-powered solutions.

Industry: Agriculture
Use case: Invoice automation with AI
Country: Spain
Apps used: WhatsApp Business Cloud, Telegram Bot, Google Sheets, Google Drive, OpenAI (ChatGPT, Whisper, DALL-E)
At Make we invite our active users to take part in regular community challenges. As part of this, we ask Make users from around the world to show creative, real-world automations, pushing the boundaries of what’s possible with Make.
For our latest challenge, we asked the community to present a practical yet powerful solution that they’ve built using Make AI Agents. Even though the competition was tough, there was one entrant that stood out.
Eduardo Cifre Sanchez, founder of and RankingSuperior.com, used agentic automation to solve a very human problem. Eduardo’s innovation helps Spanish farmers navigate the confusing, stressful world of electronic invoicing, with a solution that involves simply talking to a messaging app. After decades of using only pen and paper, they can now create online invoices in seconds.
Eduardo has since transformed this idea into a rapidly growing SaaS product: billfast.ai.
Make was the starting point for everything. It showed me that AI doesn’t have to be cold and complicated. It can be simple, personal, and life-changing.
The challenges
Spanish farmers faced three main invoicing challenges.
A digital push in a paper-based world
In Spain, authorities have recently demanded that even small-scale farmers switch to electronic invoicing. But for many older farmers, often over 60 and unfamiliar with computers, this shift has caused confusion, anxiety, and lost time.
If a farmer sells to another farmer, the buyer issues the invoice. If it’s to a business, it’s the seller. That alone was already a mess.
Every minute of admin costs money
With profit margins already under pressure, time spent on administrative work is an expense farmers can’t afford. With new regulations, they had to manually create and scan invoices, deliver receipts to the office, and organize files. This process took up to 15 minutes per invoice and 10+ minutes per expense.
Farmers’ technology resistance
Even the most advanced tools are useless if people don’t feel comfortable using them. Most farmers have no interest in apps or logins. But they did use Telegram and WhatsApp daily, and that became the entry point for change.
The solution
With no prior coding experience, Eduardo used Make to learn everything from iterators and dynamic queries to building smart logic for different invoice types, automatic folder creation, and multi-product invoice formatting.
Make and its AI capabilities made it possible to build a professional, scalable product, even though I started with zero technical background.
Talk-to-invoice: The AI Agent for farmers
Eduardo built a powerful but simple automation: an AI Agent that communicates through Telegram or WhatsApp. A farmer can send a voice message, for example, “Invoice for Pepe, 8kg tomatoes, €1.80/kg”, and the agent:
Interprets the voice message
Fills in missing details conversationally
Generates a VAT-compliant PDF
Uploads it to Google Drive (auto-sorted by year/month)
Logs the data in a Google Sheet for easy accountant access
It’s like a second brain for them. They can ask it anything. For example, ‘Who has oranges? Who bought lemons?’ - and the AI Agent remembers.
The best part? Everything is handled by free tools farmers already know, like Telegram, Google Sheets, and Google Drive - with Make’s AI orchestrating all the logic and API integrations behind the scenes.
From farming to freelancing: Scaling into a SaaS
As the farming community embraced the solution, word spread. Soon, real estate agents, freelancers, and construction firms were asking to use it too. Eduardo is now turning it into a fully-fledged SaaS product powered by Make with voice-controlled invoice and quote generation, expense tracking, and soon, payment integration.
The results
Eduardo’s agentic automation has achieved remarkable results, both in time savings and real business value:
Invoicing time reduced from 15 minutes to under 20 seconds
Expense logging cut from 12 minutes to ~10 seconds
Estimated monthly savings of €2,000–2,500
Eliminated the need for a full-time admin role, saving on salary, healthcare, and taxes
Some farmers were stressed to tears about invoicing. Now they feel in control. Some even enjoy using my solution. That emotional shift is the real result.
Conclusion
Eduardo’s journey shows that automation isn’t just for enterprises or engineers. It’s for anyone with a problem worth solving. With Make, he turned a high-stakes challenge in agriculture into a scalable, AI-powered solution, now live as billfast.ai, that’s expanding rapidly across industries.
You can feel it’s a product made by people who respect your time and mental health. Make’s colors, energy, and community - it all makes you want to build.
Want to build your own voice-powered AI Agent? Get started with Make for free!