Aion Sovereign

Aion Sovereign is a B2B data API that aggregates publicly available Japanese government data and returns it as structured JSON. Developers and businesses use Aion to access Japanese corporate filings, legal regulations, economic statistics, patent data, weather forecasts, and hundreds of other Japan-specific datasets — all in English.

• Corporate Filings (EDINET/FSA)
• Legal & Regulatory Compliance
• Economic Statistics (e-Stat)
• Patent Search (EPO)
• Weather & Disaster Data (JMA)
• Real Estate & Land Prices
• Tax & Accounting Rules
• Visa & Immigration
• Food Safety Regulations
• Import/Export Controls
• Industry Regulations
• Healthcare & Pharma
• Energy & Infrastructure
• Tourism & Culture
• Manufacturing & Supply Chain
• Financial Services Data

Prepaid API credits — pay once, use until depleted. No subscriptions.

Individual requests: $0.35 – $20.00 per call depending on data type.

1. Purchase API credits via our secure checkout

2. Receive your API key instantly

3. Make requests to any of our 365 endpoints

4. Get structured JSON data about Japan

Base URL: https://api.aion-sovereign.com

API Spec: OpenAPI 3.0

Authentication: API Key (X-API-Key header)

Format: JSON responses, English language