Integrated Japanese business data foundation
Because it brings together EDINET, gBizINFO, the corporate number registry, and corporate website information, you can check multiple sources at once by entering a company name.
Saturn
Saturn is a Japanese business data platform that combines EDINET, gBizINFO, the corporate number registry, and corporate website data. It helps teams automate spreadsheet-based workflows and expose the same structured data to APIs, MCP, and AI agents.
What Saturn does
Saturn is a Japanese business data platform that combines EDINET, gBizINFO, the corporate number registry, and structured corporate website data. It presents that information in an Excel-like spreadsheet interface so teams can define business workflows by arranging columns and running templates rather than building each step from scratch.
The product is designed to move work from manual research and transfer tasks into repeatable workflows. The site shows examples such as COREC order data being matched to freee invoices, corporate research, follow-up email generation, resume screening, and other back-office and sales operations. For developers, Saturn also exposes the data through a REST API, MCP Server, and Webhooks so AI agents and internal tools can consume the same structured source.
Main features
Spreadsheet-style workflow automation
Define business flows by arranging table columns from left to right, then automate the steps in order from template selection to data retrieval, matching, and transfer.
Sales material preparation
Prepare data for sales materials based on securities reports and executive information, including identifying decision makers and creating company-specific letters or proposals.
External integration via API and MCP
Access company data from internal tools and AI agents through REST API, MCP Server, and Webhooks.
Integration with existing tools
Connect with external services such as Gmail, Outlook, freee, COREC, Slack, Teams, Zoho CRM, and Google Sheets to automate transfer and notifications.
Task-specific templates
Start with ready-made templates for accounting, sales, recruiting, inquiry handling, marketing, forms, and notifications.
Representative use cases
Accounting transfer automation
Turn COREC order data into freee invoices by matching customer data, transferring line items, and reducing manual re-entry in accounting workflows.
Company research
Collect EDINET, gBizINFO, and website data for a target company to build a structured research sheet for sales outreach or account preparation.
Sales letters and proposals
Generate follow-up letters or proposals using company data, including role-relevant details such as decision-maker information when available from filings.
Recruiting screening
Screen resumes or application emails by routing documents into an AI-assisted first-pass review workflow for hiring teams.
Developer and agent workflows
Use REST API or MCP from Claude Desktop or other AI agents to read rows, enrich records, and keep internal tools aligned with the same structured data source.
Pros and Cons
Pros
- Combines several Japanese public and corporate data sources into one workflow-friendly system.
- Lets users define automations in a spreadsheet-style interface that is easier to inspect than a hidden prompt-only workflow.
- Supports both human users and AI agents through MCP access, so the same data can be reused across interfaces.
- Includes concrete workflow templates for operations such as invoicing, research, recruiting, and notifications.
- Offers a 14-day free trial with no initial fee shown on the pricing page.
Cons
- The collected source does not include detailed security, compliance, or data-retention documentation.
- Some sources and integrations are marked as in development, so not every listed capability appears to be generally available.
FAQ
What is Saturn?
Saturn is a Japanese business data platform that combines EDINET, gBizINFO, the corporate number registry, and website data, then exposes the results through a spreadsheet-style interface and API/MCP access.
What data can be retrieved?
The source shows EDINET documents and XBRL financial data, gBizINFO business information, the corporate number registry, and structured corporate website data. It also mentions in-development sources such as Wantedly/YouTrust and PR TIMES/patents.
Is there a free trial?
The pricing page offers a 14-day free trial, with no initial fee. The trial is described as fully free, and cancellation is stated as possible at any time.
How do you use it?
Saturn is built around an Excel-like spreadsheet UI. Users choose a template, arrange columns, and let the workflow run step by step; the source also says the MCP server can be used from Claude Desktop and AI agents.
What security measures are in place?
The page does not provide detailed security documentation in the collected text, so only limited confirmation is available from the source. It does mention a 99.9% uptime figure on the homepage.
Quick Facts
- Category
- Japanese business data platform
- Interface
- Spreadsheet-style UI
- Access methods
- API, MCP Server, Webhooks
- Primary data sources
- EDINET, gBizINFO, corporate number registry, corporate websites
- Pricing
- Paid plans with a 14-day free trial
- Website
- saturn.leach.co.jp
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