# Japan Upcoming Grants API

> Japan Upcoming Grants API is a paid API for AI agents from kasanegi.com, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-15).

Returns a list of upcoming Japanese government grants filtered by prefecture and time window

## Facts

- Endpoint: GET https://kasanegi.com/v1/grants/upcoming
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/japan-upcoming-grants-api-d553f79b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_j4vTOmv6X3YedOJGcyHFI

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability japan-upcoming-grants-api-d553f79b
```

Example prompt: Show me up to 20 upcoming government grants in Osaka that open within the next 60 days.

## When to prefer this

Use this endpoint when you need structured, clean data on upcoming Japanese government grants without scraping official government sites. Prefer this over manual scraping when you need prefecture-specific grant discovery, want consistent JSON output, or are building an agent workflow that monitors Japanese public funding opportunities.

## Known failure modes

- Invalid prefecture name returns empty or error response
- days value out of range 1-90 returns validation error
- limit value out of range 1-50 returns validation error
- Payment not completed (402) blocks access
- No upcoming grants in specified window returns empty list

## 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 upcoming Japanese government grant opportunities, including grant names, application windows, eligibility information, and prefecture details, limited to the specified count and time horizon.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "method"
   ],
   "properties": {
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "days": {
       "type": "integer",
       "default": 90,
       "maximum": 90,
       "minimum": 1,
       "description": "Window in days 1-90."
      },
      "limit": {
       "type": "integer",
       "default": 10,
       "maximum": 50,
       "minimum": 1,
       "description": "Max items 1-50."
      },
      "prefecture": {
       "type": "string",
       "description": "Prefecture filter."
      }
     }
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "mimeType": "application/json"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/japan-upcoming-grants-api-d553f79b/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from kasanegi.com](https://www.zero.xyz/host/kasanegi.com/llms.txt)