Turn Japan's public data into an AI-ready spreadsheet WS
Saturn integrates EDINET filings, gBizINFO, and corporate registries into a single spreadsheet UI. Define columns, and AI handles the rest — company research in 30 sec, invoice transfer from 8 hours to 5 min, resume screening at 100/day. Works via UI, API, and MCP (22 tools for AI agents).
Hi PH! I'm a solo founder in Tokyo building Saturn. We also won The Biggest Engineering Lift award at YC Hackathon c0mpiled-7 (March 2026) — building AI agents that work with real-world data is what we do.
Japanese business data is scattered across dozens of government portals — EDINET, gBizINFO, corporate registries — each with different formats and no easy way to combine them.
Saturn pulls it all together into a spreadsheet you already know how to use. Add a column, and AI enriches your data automatically. No code, no pipelines.
Real use cases live in production: - **Accounting**: COREC orders → freee invoices (100/day, 8 hrs → 5 min) - **Recruiting**: Gmail resume PDFs → AI screening (100 apps/day) - **Sales**: Trade show cards → same-day personalized follow-up
Built with Cloudflare Workers, MCP for AI agents, and open API.
Takuya Tominaga
Hi PH! I'm a solo founder in Tokyo building Saturn. We also won The Biggest Engineering Lift award at YC Hackathon c0mpiled-7 (March 2026) — building AI agents that work with real-world data is what we do.
Japanese business data is scattered across dozens of government portals — EDINET, gBizINFO, corporate registries — each with different formats and no easy way to combine them.
Saturn pulls it all together into a spreadsheet you already know how to use. Add a column, and AI enriches your data automatically. No code, no pipelines.
Real use cases live in production:
- **Accounting**: COREC orders → freee invoices (100/day, 8 hrs → 5 min)
- **Recruiting**: Gmail resume PDFs → AI screening (100 apps/day)
- **Sales**: Trade show cards → same-day personalized follow-up
Built with Cloudflare Workers, MCP for AI agents, and open API.
YC application. Would love your feedback!