# kasanegi.com Japan Grants Search API

> kasanegi.com Japan Grants Search 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).

Search Japanese government and public grant programs by keyword, industry, prefecture, company size, and deadline

## Facts

- Endpoint: GET https://kasanegi.com/v1/grants/search
- 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/kasanegi-com-japan-grants-search-api-c3ac0e28
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_SNvf1k0yBRIWJTilEpnAn

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 kasanegi-com-japan-grants-search-api-c3ac0e28
```

Example prompt: Search kasanegi.com for Japanese government grants available to small companies in the IT industry in Tokyo prefecture, with deadlines within the next 60 days — show me up to 20 results.

## When to prefer this

Use this endpoint when you need structured, clean access to Japanese government grant and subsidy data without scraping government websites. Ideal for AI agents helping Japanese SMEs discover applicable funding, or for applications that need to filter grants by industry, region, company size, or urgency. Prefer over scraping or manual lookup when you need programmatic, filterable, paginated access to Japan public grant data.

## Known failure modes

- Invalid company_size enum value returns 400 error
- deadline_within outside 1-365 range returns validation error
- limit exceeding 50 returns validation error
- No matching grants returns empty results array
- Payment not provided or insufficient returns 402 Payment Required
- Japanese keyword malformed or unsupported encoding returns 400

## 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 grant programs with relevant details such as grant name, description, eligible industries, eligible company sizes, prefecture applicability, deadline, and funding amounts, plus pagination metadata (total count, offset).

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "method"
   ],
   "properties": {
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "limit": {
       "type": "integer",
       "default": 10,
       "maximum": 50,
       "minimum": 1,
       "description": "Max results 1-50."
      },
      "offset": {
       "type": "integer",
       "default": 0,
       "minimum": 0,
       "description": "Pagination offset."
      },
      "keyword": {
       "type": "string",
       "description": "Keyword filter (Japanese or romaji)."
      },
      "verbose": {
       "type": "boolean",
       "default": false,
       "description": "Verbose."
      },
      "industry": {
       "type": "string",
       "description": "Industry filter."
      },
      "prefecture": {
       "type": "string",
       "description": "Prefecture filter."
      },
      "company_size": {
       "enum": [
        "micro",
        "small",
        "medium",
        "sme"
       ],
       "type": "string",
       "description": "Company size filter."
      },
      "deadline_within": {
       "type": "integer",
       "maximum": 365,
       "minimum": 1,
       "description": "Deadline within N days (1-365)."
      }
     }
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/kasanegi-com-japan-grants-search-api-c3ac0e28/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)