# ClearCheck Earthquake Activity Lookup

> ClearCheck Earthquake Activity Lookup is a paid API for AI agents from loonie-toll.onrender.com, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-14).

Returns recent earthquake activity near a geographic point, including count, strongest event, closest event, and a significance verdict.

## Facts

- Endpoint: GET https://loonie-toll.onrender.com/quakes
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/clearcheck-earthquake-activity-lookup-fff5cb75
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_WV-Jo48yyXDNNomdghDVE

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 clearcheck-earthquake-activity-lookup-fff5cb75
```

Example prompt: Can you check for any recent earthquakes within 150 km of Seattle (47.6062° N, 122.3321° W) over the past 14 days, minimum magnitude 2.5, and tell me if anything significant happened?

## When to prefer this

Use this endpoint when you need a fast, pre-summarized verdict on earthquake activity near a specific geographic point — especially when you want counts, strongest/closest highlights, and a significance verdict without manually parsing raw USGS feeds. Prefer this over raw USGS APIs when you need a clean, agent-consumable JSON summary with a verdict and reasons rather than raw GeoJSON event lists.

## Known failure modes

- Missing required lat/lon parameters returns a 400 error
- Coordinates outside valid range (lat ±90, lon ±180) may return empty results or an error
- No earthquakes found for the given radius/time/magnitude filters returns zero counts with a CLEAR verdict
- USGS upstream data unavailability may cause 502 or timeout responses
- Very large radius or long lookback window may increase latency or hit data limits

## How this service works

Recent earthquakes near a point: count, strongest, closest, and whether anything was significant enough to matter.

## Output

Returns a structured response with the query parameters echoed back, total earthquake counts (overall, magnitude 4+, magnitude 5+), details on the closest and strongest events (time, place, magnitude, depth, distance, felt reports, tsunami flag, significance score), a full list of matching events, a verdict string (e.g. CLEAR or SIGNIFICANT), and an array of human-readable reasons supporting the verdict.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "lat",
      "lon"
     ],
     "properties": {
      "lat": {
       "type": "number",
       "description": "Latitude, decimal degrees"
      },
      "lon": {
       "type": "number",
       "description": "Longitude, decimal degrees"
      },
      "days": {
       "type": "integer",
       "description": "Lookback window in days, default 30"
      },
      "radiusKm": {
       "type": "integer",
       "description": "Search radius in km, default 200"
      },
      "minMagnitude": {
       "type": "number",
       "description": "Minimum magnitude, default 2.5"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "query": {
       "type": "object",
       "properties": {
        "lat": {
         "type": "number"
        },
        "lon": {
         "type": "number"
        },
        "days": {
         "type": "integer"
        },
        "radiusKm": {
         "type": "integer"
        },
        "minMagnitude": {
         "type": "number"
        }
       }
      },
      "counts": {
       "type": "object",
       "properties": {
        "total": {
         "type": "integer"
        },
        "magnitude4Plus": {
         "type": "integer"
        },
        "magnitude5Plus": {
         "type": "integer"
        }
       }
      },
      "events": {
       "type": "array",
       "items": {
        "type": "object",
        "properties": {
         "at": {
          "type": "string"
         },
         "url": {
          "type": "string"
         },
         "place": {
          "type": "string"
         },
         "depthKm": {
          "type": "number"
         },
         "magnitude": {
          "type": "number"
         },
         "distanceKm": {
          "type": "integer"
         },
         "feltReports": {
          "type": "integer"
         },
         "tsunamiFlag": {
          "type": "bool
… (truncated)
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/clearcheck-earthquake-activity-lookup-fff5cb75/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from loonie-toll.onrender.com](https://www.zero.xyz/host/loonie-toll.onrender.com/llms.txt)