João Ferreira

I'm an independent developer focused on turning complex public data into practical, automation-ready products.

I build APIs and monitoring tools for:

• Official economic release calendars
• EU public tender opportunities
• Prediction-market order-book analysis
• Wallet activity and strategy research
• Cross-market contract and arbitrage verification

My products are designed for developers, analysts, researchers, dashboards, and automated agents. I prioritize clear schemas, bounded outputs, reproducible calculations, source links, and honest limitations.

• Data from public and official sources
• Structured JSON outputs
• Documented inputs and examples
• Transparent pricing
• No exaggerated profit or performance claims
• Regular maintenance and reliability monitoring

These tools provide data and analysis, not financial advice. Prediction-market products do not guarantee profitable trades, execution, or market outcomes.

Issues and reproducible bug reports are welcome through each Actor's Apify page.