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Japan Government Grants Search API
x402
Japan Government Grants Search API is a paid API for AI agents from api.kasanegi.com, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-15).
Search Japanese government and public grants with filters for keyword, industry, prefecture, company size, and deadline
Price / call$0.05
Success—
StatusUnknown
How this service works
Stop scraping Japanese government and public-data sites. Call clean Japan payroll, company, and grant APIs over one host. Preview free; one public marketplace listing covers all current products; x402 direct is available for agent-native buyers.
Output
A JSON array of matching Japanese government grant and subsidy programs, filtered by the specified criteria, including grant details such as name, description, eligibility, deadline, and relevant industry or prefecture information.
Example use cases
Find urgent funding for Tokyo tech startup
“Look up Japanese government grants for tech companies in Tokyo that expire within the next 45 days — I need to apply before they close.”
Discover agriculture subsidies for rural SMEs
“Search kasanegi for public funding programs available to small agricultural businesses in Hokkaido prefecture — what subsidies can help us modernize our operations?”
Identify IT company grants by deadline
“Find all Japanese government grants for IT and software companies nationwide with deadlines in the next 60 days, sorted by how much funding they offer.”
Technical details
Endpoint
GEThttps://api.kasanegi.com/v1/grants/searchWhen to prefer
Use this endpoint when you need to programmatically search Japanese government grants and public subsidies without scraping government websites. Ideal for agents helping Japanese SMEs find funding, fintech apps surfacing relevant grants, or business tools that need filtered grant discovery by industry, region, company size, or urgency (upcoming deadlines). Prefer this over raw scraping when you need clean, structured, filterable grant data in a single API call.
Side effects
- Invalid company_size enum value returns 400 error
- Unsupported prefecture name or misspelling returns empty results
- deadline_within outside 1-365 range returns validation error
- limit exceeding 50 returns 400 error
- Payment not provided or insufficient USDC returns 402 Payment Required
- No matching grants found returns empty results array
- Japanese keyword encoding issues may reduce match quality
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| input | object |
Output
Schema · Response
{
"type": "json",
"mimeType": "application/json"
}Tags
x402
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