Release Notes

Every feature, improvement, and fix — shipped fast, shipped often.

v1.15.0 | 2026.03.13 Feature Featured

🏢 Corporate Number API — Auto-verify business partners via NTA registry

Integration with Japan's National Tax Agency Corporate Number Web-API. Simply enter a company name to auto-fetch the 13-digit corporate number, registered address, and entity type. Supports prefecture/city filtering to accurately identify companies with the same name. Perfect for invoice compliance verification and new business partner registry checks.

New

✓ Corporate number lookup column — Auto-fetch corporate number and registry info from NTA Web-API by company name
✓ Address filtering — Text input like 'Tokyo Shinagawa-ku' for prefecture/city filtering
✓ Corporate Number List template — Manage corporate numbers, registered names, entity types, and addresses in one table
✓ Same-name company disambiguation — Exact name matching after stripping entity suffixes + address filtering for accurate identification

v1.14.0 | 2026.03.13 Feature Featured

🇺🇸 SEC EDGAR Integration — US listed company analysis template

Integration with US SEC's EDGAR database. Search approximately 13,000 US listed companies by ticker or company name and add to your table. AI integrates 10-K/10-Q filings, industry classification, and news to auto-generate investment analysis reports.

New

✓ US company search — Search ~13,000 companies from SEC's company_tickers.json by ticker or company name and bulk-add to table
✓ SEC EDGAR company data — Auto-fetch company overview, SIC industry, and exchange info from EDGAR Submissions API via CIK/Ticker
✓ Filing list — Retrieve latest 10 major filings including 10-K, 10-Q, 8-K, DEF 14A, and S-1
✓ US Company SEC Analysis template — AI integrates EDGAR data, company enrichment, and news to generate investment analysis reports

Improved

✓ Template expression engine — Added bracket notation support (e.g., tickers[0]) for flexible array data access

v1.13.0 | 2026.03.13 Feature Featured

🇰🇷 Korean DART Integration — 115,000 Korean companies database

Integration with Korea's DART electronic disclosure system. Search 115,000 companies by Korean name, English name, or stock code and add to your table. Financial data retrieval for listed companies is also supported.

New

✓ Korean company search — Search 115,000 companies from DART database by name (Korean/English) or stock code and bulk-add to table
✓ Korean listed company financials — Auto-fetch financial data (revenue, operating income, etc.) from DART for Korean listed companies
✓ Auto company master sync — Weekly batch updates all DART company data (corpCode.xml)
✓ English name support — Official English names for 3,949 listed companies fetched from DART. Supports English company search

v1.12.0 | 2026.03.12 Feature Featured

📈 EDINET Integration — AI-powered listed company financial analysis

Enter a security code to automatically fetch annual reports from EDINET. Financial data (revenue, operating income, ROE, etc.) is displayed in table columns. AI generates investment analysis reports by integrating IR data and news.

New

✓ Listed Company Analysis template — Enter a security code to auto-collect annual reports, financial data, IR info, and news, with AI investment analysis
✓ EDINET company search — Search listed companies by name or security code and bulk-add to table
✓ Auto financial data extraction — Revenue, operating income, net income, ROE, and total assets from annual reports. Supports JP-GAAP, IFRS, and US-GAAP
✓ AI investment analysis — Integrates company info, annual reports, IR/mid-term plans, and news to generate analysis of strengths, risks, growth drivers, and competitive position

Improved

✓ English LP — Published English landing page at saturn.leach.co.jp/en
✓ Demo videos section — Added use-case demo videos to the landing page
✓ Product Hunt badge — Added PH launch badge to LP hero section

v1.11.0 | 2026.03.07 Feature Featured

📑 Auto-generate payment reminder emails from freee

Import unpaid invoices from freee and auto-generate reminder emails with AI-adjusted tone based on overdue days. Save as Gmail drafts for review before sending.

New

✓ Payment reminder template — End-to-end flow from importing unpaid invoices to generating reminder emails and saving Gmail drafts
✓ freee invoice source column — Import invoice data directly from freee API. Refresh button to pull latest data
✓ AI reminder email generation — Auto-adjust tone based on overdue days. Auto-insert sender info in signature

Improved

✓ Improved Gmail disconnected error — Show 'Connect Gmail' link instead of HTTP 500
✓ Quick start screen — Organized 18 templates into collapsible categories
✓ Codebase refactoring — Split files over 300 lines (freee-client, gmail routes, cell renderers)

v1.10.0 | 2026.03.06 Feature Featured

📊 Google Sheets integration + auto-generate acceptance PDFs

Import Google Sheets data into tables and auto-generate PDFs from Google Docs templates with placeholder replacement. One-click paperless workflow.

New

✓ Google Sheets integration — Import spreadsheet data directly into tables with links back to source rows
✓ PDF generation (doc-generate column) — Auto-replace placeholders in Google Docs templates with column data and export as PDF
✓ Factory acceptance template — End-to-end workflow: Google Forms → Sheets → Saturn → acceptance PDF

Improved

✓ Redesigned doc-generate column settings — Intuitive template URL and placeholder mapping in column settings panel
✓ Improved Google Sheets cell display — Custom renderer with spreadsheet row links and JSON popover support

v1.9.4 | 2026.03.05 Improvement

📦 Rename COREC account labels

Click to rename COREC account labels in settings. Easily distinguish between multiple connected accounts.

Improved

✓ COREC account label rename — Click to inline-edit account names in settings. Instantly reflected in fetch panel dropdown

v1.9.3 | 2026.03.05 Improvement

📦 Changed COREC notes mapping to freee internal memo

Changed COREC notes transfer destination to freee internal memo and added a new freee notes column.

Improved

✓ Changed COREC notes destination from freee notes to freee internal memo — View content without opening invoice
✓ Added freee notes column — Manually set notes to print on invoices

v1.9.2 | 2026.03.05 Bug Fix

🔧 Fix freee internal memo transfer

Fixed a bug where internal memo column values were not sent to freee during COREC → freee invoice transfer.

Fixed

✓ Fixed freee internal memo transfer — Internal memo was not reflected in freee during invoice transfer

v1.9.1 | 2026.03.05 Improvement

⚡ SSE streaming + job research template

Switched enrichment progress to SSE streaming for real-time updates. Added job research template.

New

✓ Job research template — Automate job posting collection and analysis in a table
✓ SSE streaming — Real-time enrichment progress via Server-Sent Events with automatic polling fallback

Fixed

✓ Zengin format fix — Corrected data record field lengths to match specification

v1.9.0 | 2026.03.04 Feature Featured

🔌 MCP support — Access Saturn tables from Claude Desktop

Access Saturn tables directly from Claude Desktop / Claude Code via MCP. 22 tools + 6 resources for AI agent integration.

New

✓ MCP (Model Context Protocol) support — Access Saturn tables via chat from Claude Desktop or Claude Code
✓ API key generation — One-click generation from settings. Just configure in Claude to connect

Improved

✓ Full LP redesign — Added cost comparison table, founder story, and reverse filter sections

v1.8.0 | 2026.03.03 Feature Featured

📝 Bulk SEO article generation for note.com

Enter keywords and AI generates SEO articles, bulk-published to note.com. Content marketing automated in a single table.

New

✓ Bulk SEO article template — Enter theme + keywords, AI generates title, body, and summary, then bulk-publishes drafts to note.com
✓ note.com integration — OAuth connection. Save articles in Markdown, auto-convert to HTML for publishing
✓ Password reset — Added email-based password reset flow
✓ Documentation site — Launched help docs at saturn-docs.leach.co.jp

Improved

✓ Stabilized freee OAuth / invoice handling — Improved cookie session management and error handling
✓ Added documentation links to LP, header, and footer

v1.7.0 | 2026.03.03 Feature Featured

🔔 Slack/Teams notifications + bulk SNS thumbnail generation

Post-research automation: share to Slack/Teams and generate SNS thumbnails with Gemini AI — all from Saturn tables.

New

✓ Slack notifications — Post row data to Slack channels via OAuth. Permalink saved in cell
✓ Teams notifications — Webhook posting to Microsoft Teams channels. Per-row and bulk send
✓ Bulk SNS thumbnail generation — Generate YouTube/Instagram/X/TikTok images with Gemini AI. 100+ images in minutes
✓ SNS thumbnail template — Product data → copywriting → image generation → Slack posting in one table
✓ Exhibition follow-up (LinkedIn → Gmail) — Added LinkedIn as 4th business card source
✓ Inquiry management (Outlook → Table) — Added Outlook inbox inquiry management template
✓ Settings redesign — Services organized by category with at-a-glance connection status

v1.6.0 | 2026.03.02 Feature Featured

💬 LINE inquiry management — AI auto-classification & reply

AI auto-classifies and drafts replies for LINE Official Account inquiries. Webhook → classification → reply generation → one-click send, all in one table.

New

✓ LINE inquiry management template — Automate LINE Official Account support in one table
✓ LINE Webhook receiver — Auto-import LINE messages to table in real-time
✓ AI auto-classification — Instantly generate category (question/order/complaint/reservation), urgency (high/mid/low), and summary
✓ AI reply generation — Auto-generate personalized replies reflecting handling notes
✓ One-click LINE reply — Send push messages directly from the table

v1.5.0 | 2026.03.01 Feature Featured

✉️ AI-generated sales letters that don't get thrown away

Company research → news analysis → job postings → auto-generated sales letters. AI completes prospect research in seconds. Export 4 letter patterns as CSV or Word.

New

✓ Sales letter template — End-to-end from company research to letter generation in one table
✓ Job posting enrichment — AI analyzes company career pages to estimate needs and pain points
✓ AI letter generation — Auto-generate 4 letter patterns from company info, news, and job postings
✓ CSV / Word export — Download generated letters as CSV or Word documents

Improved

✓ Grid rewritten to div-based layout — Always-visible header buttons, improved scroll stability

v1.4.0 | 2026.02.26 Feature Featured

🤝 myBridge & CamCard import + Zoho CRM integration

Business card import now supports myBridge and CamCard alongside Eight. Plus Zoho CRM integration for card import → AI email → Gmail send → CRM lead registration in one table.

New

✓ Exhibition follow-up (myBridge → Gmail) — AI generates emails from myBridge business cards → Gmail send
✓ Exhibition follow-up (CamCard → Gmail) — AI generates emails from CamCard business cards → Gmail send
✓ Inquiry management (Gmail → Table) — AI classifies and structures Gmail inquiries for list management
✓ Inquiry management (Gmail → Zoho CRM) — Auto-transfer Gmail inquiries as Zoho CRM leads
✓ Zoho CRM integration — One-click lead registration from table row data
✓ R2 image cache — Fast business card image display with EXIF rotation correction

v1.3.0 | 2026.02.25 Feature Featured

🤝 Eight business card import → bulk follow-up emails

Import business card data from Eight, AI auto-generates follow-up emails. Gmail draft creation and sending in one seamless flow. Post-exhibition follow-up in seconds.

New

✓ Eight business card integration — One-click import of business cards exchanged at events
✓ AI email generation — Auto-create follow-up emails from card info and meeting notes
✓ Gmail draft creation — Save generated emails as Gmail drafts with one click
✓ Gmail send — Bulk send after review, with long-press to prevent accidental sends

Improved

✓ In-cell line breaks — Long text like email bodies now wrap properly
✓ IME commit fix — Prevent cell commit during Japanese input Enter key
✓ Gmail permission error reconnect — One-click re-authentication link

v1.2.0 | 2026.02.24 Feature Featured

📄 AI reads resumes and auto-ranks candidates S~D

AI auto-analyzes resume/CV PDFs from Gmail. Extracts age, education, skills and auto-ranks candidates S/A/B/C/D with evaluation rationale and interview question suggestions.

New

✓ AI PDF analysis — Auto-extract candidate info from resumes and CVs
✓ PDF text extraction engine — Fast, lightweight extraction via unpdf (Cloudflare Workers compatible)
✓ Parallel column enrichment — 5-concurrent batch processing for high-volume rows

v1.1.0 | 2026.02.23 Feature Featured

🏦 Gmail invoices → Zengin bank transfer format

AI auto-extracts payment info from invoice PDFs in Gmail and exports in Zengin (Japanese bank transfer) format. Auto-completes bank codes.

New

✓ Gmail integration for row import — Import invoice data directly from emails into tables
✓ Zengin format export — Bulk download bank transfer data in Japanese standard format
✓ Bank enrichment — Auto-complete bank codes and branch codes from bank/branch names

Improved

✓ Parallel freee invoice transfer — Improved processing speed for bulk invoices
✓ COREC order fetch limit raised to 500 + date range picker UI

Fixed

✓ Fixed Stripe connection error in Cloudflare Workers environment
✓ Unified email sender domain to saturn.leach.co.jp

- | 2026.02.22 Sponsorship

🤝 Accepted into E2B for Startups

Accepted into E2B's startup program — $20,000 in credits and Pro Tier access for AI agent cloud sandboxes.

v1.0.0 | 2026.02.20 Announcement Featured

🚀 Saturn official launch

Fully automates COREC order → freee invoice transfer. AI auto-matches vendor names and bulk-creates 100 invoices with one click.

New

✓ COREC integration — One-click order data import
✓ freee integration — Auto-create and bulk-transfer invoices
✓ AI matching — Auto-match vendor names (handles variations)
✓ Spreadsheet-based worksheet foundation
✓ 14-day free trial