Structured Japanese company data.API and MCP-ready.
EDINET filings, gBizINFO, corporate registries — unified by corporate number, enriched by AI. Enter a company name. Financials, filings, and org data auto-populate.
A spreadsheet that becomes a data mart and a workflow engine
Define business flows by arranging columns. Data sources are built in. Humans use the UI, AI uses MCP/API — same foundation.
Column chains = Workflows
Define column dependencies. Execution order is auto-determined via topological sort. No code, no flowcharts.
Data sources built into column types
Public data (EDINET, gBizINFO, corporate numbers) plus talent platforms (Wantedly, YouTrust, LinkedIn), PR TIMES, and patent data — all as column types.
Same foundation for humans and AI
Humans review and edit in the spreadsheet UI. AI agents access the same data and logic via MCP/API. Different entry points, same base.
Workflow example
18 templates, live in production
Change column definitions to handle any workflow. All powered by the same engine — zero code changes to scale.
Accounting
- COREC orders → freee invoices | 100/day: 8 hours → 5 min
- Gmail invoices → Zengin bank format | zero manual entry
- Outlook invoices → Zengin bank format
Sales
- Company research | EDINET + gBizINFO + Web in 30 sec
- AI sales letters | personalized per company
- Trade show follow-up | 500 cards → same-day emails
Recruiting
- Gmail resume PDF → AI screening | 100 apps/day auto-scored
- Outlook applications → AI scoring
Support
- Gmail / Outlook → AI triage & reply | avg 3 min → instant
- LINE → AI classification & reply
- Gmail → Zoho CRM lead transfer
Marketing
- SNS thumbnails | 50/month auto-generated with Gemini
- note SEO articles | bulk generate from keywords → auto-publish
Documents & Notifications
- Google Forms → acceptance PDF generation
- Table → Slack / Teams auto-notification
Zero code changes. Scale by adding column definitions.
DATA SOURCES
Built-in data sources
Enter a company name. Financials, people, and news auto-populate column by column.
EDINET
LiveAnnual reports (PDF + XBRL financials). 130K documents over 10 years.
gBizINFO
LiveBasic info, subsidies, patents, procurement, certifications. Corporate number-based.
Corporate Number
LiveEntity resolution foundation. Unification key for all government data.
Corporate Websites
LiveStructured crawl via Firecrawl. Business overview, IR, careers.
Wantedly / YouTrust
In developmentOrg structure and key people from talent platforms.
PR TIMES / Patents
In developmentSignal detection from press releases and patent filings.
FOR DEVELOPERS
Access Japanese company data via API and MCP
Structured, normalized Japanese company data — ready for your AI agents and internal tools.
REST API
Company search, financials, enrichment — programmatically.
MCP Server
22 tools + 6 resources. Direct access from Claude Desktop and AI agents via Streamable HTTP.
Webhooks
Real-time notifications on enrichment completion and new data.
// Fetch table data via MCP
const result = await mcp.callTool("list-rows", {
workbookId: "wb_xxx",
worksheetId: "ws_xxx",
limit: 100,
});
// Enrich company data
await mcp.callTool("enrich-rows", {
worksheetId: "ws_xxx",
rowIds: ["row_1", "row_2"],
});14 integrations
Email, accounting, orders, business cards, chat, CRM — connect your existing tools in one click.
Zero risk to get started
14 days free. If it's not for you, just press cancel.
Starter
For small teams starting automation
- All templates available
- External service integrations
- Up to 10 tables
Credit card required · 14 days free
Pro
For teams needing serious processing power
- All templates available
- External service integrations
- Up to 50 tables
- Priority support
Credit card required · 14 days free
Need custom integrations or enterprise scale?Contact us
See Saturn in action
Watch feature demos — each shipped as a release.
📊 Google Sheets integration + auto-generate acceptance PDFs
🔌 MCP support — Access Saturn tables from Claude Desktop
📝 Bulk SEO article generation for note.com
💬 LINE inquiry management — AI auto-classification & reply
✉️ AI-generated sales letters that don't get thrown away
📄 AI reads resumes and auto-ranks candidates S~D
🏦 Gmail invoices → Zengin bank transfer format
🚀 Saturn official launch
Why I built Saturn
I spent 9 years at Toshiba building enterprise infrastructure, AI, and security systems. I watched sales teams burn 30+ minutes researching a single company — copy-pasting from scattered government databases into spreadsheets.
EDINET and gBizINFO are free public data, yet nobody had unified them. So I built it myself — front-end to data pipeline, solo, full stack.
The data infrastructure for
Japanese companies
Spreadsheet for humans. MCP and API for AI agents.
Start for free