# Chishiru Japan Land Data API – Ground Motion

> Chishiru Japan Land Data API – Ground Motion is a paid API for AI agents from api.chishiru.jp, paid per call via x402, $0.03/call, status unknown (last checked 2026-10-10).

Returns seismic ground motion risk data for a specific geographic point in Japan, sourced from Japanese government open data.

## Facts

- Endpoint: GET https://api.chishiru.jp/v1/land/ground_motion?utm_source=zero.xyz
- Price: $0.03/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-10
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/chishiru-japan-land-data-api-ground-motion-bc936127
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_l0qemNxNfP895TdDcBY6O

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 chishiru-japan-land-data-api-ground-motion-bc936127
```

Example prompt: What's the seismic ground motion risk for the land at latitude 35.6810, longitude 139.7670 in Japan? Pull the ground motion data from Chishiru.

## When to prefer this

Choose this endpoint when you need authoritative, government-sourced seismic ground motion data for a specific geographic point in Japan, especially for real estate due diligence, construction planning, insurance underwriting, or disaster risk assessment. It is pay-per-call with no API key required, making it ideal for low-volume or on-demand lookups. Prefer this over general earthquake databases when you need point-level precision tied to Japanese government hazard maps.

## Known failure modes

- Coordinates outside Japan bounds — returns error or empty module data
- Invalid latitude/longitude format — returns 400 bad request
- Payment failure via x402/USDC — returns 402 Payment Required
- Temporary unavailability of upstream government data source — module status may indicate error
- Rate limiting or network timeout — returns 5xx error

## How this service works

Pay-per-call land data for any point in Japan from government open data: zoning, hazard zones, land prices, evacuation sites, earthquake records, climate, terrain, ground motion. x402 (USDC on Base), no API key.

## Output

Returns a JSON object containing a land_id (encoding the coordinates and resolution), ground motion data under the modules.ground_motion key, and a receipt with an ID and expiry timestamp confirming the paid x402 call. The ground motion module includes seismic risk metrics sourced from Japanese government datasets.

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "land_id": "35.6810_139.7670_500",
  "modules": {
   "zoning": {
    "data": {
     "bcr_pct": 80,
     "far_pct": 900,
     "zone_ja": "市街化区域",
     "use_area_ja": "商業地域"
    },
    "status": "ok"
   }
  },
  "receipt": {
   "id": "rcpt_...",
   "expires_at": "..."
  },
  "service": "land",
  "api_version": "1"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/chishiru-japan-land-data-api-ground-motion-bc936127/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.chishiru.jp](https://www.zero.xyz/host/api.chishiru.jp/llms.txt)