# Global Hazards Mercalli Intensity Scale Lookup

> Global Hazards Mercalli Intensity Scale Lookup is a paid API for AI agents from global-hazards.x402tookit.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-29).

Returns Modified Mercalli Intensity (MMI) scale descriptions including what is felt, typical damage, and shaking characteristics for a given intensity level (I–XII), or maps a peak ground acceleration (PGA) value to its corresponding intensity band.

## Facts

- Endpoint: GET https://global-hazards.x402tookit.com/mercalli-scale?utm_source=zero.xyz
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-29
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/global-hazards-mercalli-intensity-scale-lookup-a672731e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_rJh3M8CR3yA8_yWmR9MZL

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 global-hazards-mercalli-intensity-scale-lookup-a672731e
```

Example prompt: What does Modified Mercalli intensity VIII mean in terms of what people feel and the typical damage expected? Also, what intensity band corresponds to a peak ground acceleration of 40 percent g?

## When to prefer this

Use this endpoint when you need authoritative human-readable descriptions of Modified Mercalli intensity levels — what people feel, structural damage, and shaking characteristics — or when you need to convert a peak ground acceleration value to an instrumental intensity band. Prefer this over generic earthquake magnitude lookups when the user needs intensity-based impact descriptions rather than raw seismic energy metrics.

## Known failure modes

- Invalid intensity value outside 1–12 range returns an error
- Non-numeric string passed as pgaPercentG causes a validation error
- Omitting both intensity and pgaPercentG returns all levels (may return large payload)
- Service degraded flag set to true indicates partial or cached data

## How this service works

Modified Mercalli intensity I to XII: what is felt and the typical damage, or the intensity band for a peak ground acceleration.

## Output

Returns a structured object with the numeric intensity level, Roman numeral (e.g. VIII), shaking description, summary of what people feel, typical damage description, and a verdict. When queried by PGA, returns the matching instrumental intensity band. Optionally includes source, disclaimer, and data freshness fields.

## 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": [],
     "properties": {
      "intensity": {
       "type": "string",
       "description": "Intensity as 1 to 12 or roman I to XII (omit to list all levels)"
      },
      "pgaPercentG": {
       "type": "number",
       "description": "Peak ground acceleration in percent of g, to get the instrumental intensity band"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "asOf": {
       "type": [
        "null",
        "string"
       ]
      },
      "name": {
       "type": [
        "null",
        "string"
       ]
      },
      "level": {
       "type": [
        "null",
        "number"
       ]
      },
      "roman": {
       "type": [
        "null",
        "string"
       ]
      },
      "source": {
       "type": [
        "null",
        "string"
       ]
      },
      "reasons": {
       "type": [
        "array",
        "null"
       ],
       "items": {
        "type": "string"
       }
      },
      "shaking": {
       "type": [
        "null",
        "string"
       ]
      },
      "summary": {
       "type": [
        "null",
        "string"
       ]
      },
      "verdict": {
       "type": [
        "null",
        "string"
       ]
      },
      "degraded": {
       "type": [
        "boolean",
        "null"
       ]
      },
      "disclaimer": {
       "type": [
        "null",
        "string"
       ]
      },
      "notChecked": {
       "type": [
        "array",
        "null"
       ],
       "items": {
        "type": "string"
       }
      },
      "typicalDamage": {
       "type": [
        "null",
        "string"
       ]
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/global-hazards-mercalli-intensity-scale-lookup-a672731e/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from global-hazards.x402tookit.com](https://www.zero.xyz/host/global-hazards.x402tookit.com/llms.txt)