# Chishiru Japan Earthquake History API

> Chishiru Japan Earthquake History API is a paid API for AI agents from api.chishiru.jp, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-11).

Returns historical earthquake records for a given geographic point in Japan, sourced from Japanese government open data.

## Facts

- Endpoint: GET https://api.chishiru.jp/v1/land/quake_history?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/chishiru-japan-earthquake-history-api-c2f44874
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_O7dLnAAD884Jp6MYQlqpW

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-earthquake-history-api-c2f44874
```

Example prompt: Can you pull up the earthquake history for the land near Shinjuku Station in Tokyo — coordinates roughly 35.6895, 139.6917 — using Chishiru's Japan land data?

## When to prefer this

Choose this endpoint when you need historical earthquake data specifically tied to a precise geographic point in Japan, sourced from authoritative Japanese government open data, with no API key required and pay-per-call USDC micropayment billing. It is ideal for real estate analysis, construction risk assessment, or insurance underwriting workflows where per-query cost efficiency matters and you need official seismic history rather than real-time alerts.

## Known failure modes

- Coordinates outside Japan return no data or an error
- Invalid or malformed latitude/longitude causes a 400 error
- Payment failure via x402/USDC results in an unpaid/unauthorized response
- Rate limits or network timeouts may produce 5xx errors
- Coordinates in ocean or unpopulated areas may return empty earthquake records

## 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

A JSON object containing a land_id (encoding the coordinates and grid resolution), a modules object with earthquake history data for the queried point, an api_version, service name, and a receipt with a unique receipt ID and expiry timestamp confirming the micropayment was processed.

## 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-earthquake-history-api-c2f44874/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)