# Space Objects: Impact Scale Calculator (Torino & Palermo)

> Space Objects: Impact Scale Calculator (Torino & Palermo) is a paid API for AI agents from space-objects.x402tookit.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-21).

Explains Torino scale levels or computes Palermo scale value from impact probability, energy in megatons, and years until impact.

## Facts

- Endpoint: GET https://space-objects.x402tookit.com/impact-scales?utm_source=zero.xyz
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/space-objects-impact-scale-calculator-torino-palermo-d1a12a5c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_bT9Mpt8LcHE5dSlBwlbyw

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 space-objects-impact-scale-calculator-torino-palermo-d1a12a5c
```

Example prompt: What does Torino scale level 6 mean, and can you also compute the Palermo scale value for an asteroid with a 0.5% impact probability, 200 megatons of energy, and 25 years until potential impact?

## When to prefer this

Use this endpoint when you need authoritative, formula-driven interpretations of asteroid impact risk scales — either to explain what a Torino level means in plain language, or to compute a Palermo scale value from raw orbital mechanics inputs (probability, energy, time). Prefer this over general astronomy APIs when the specific output is a risk-scale value or explanation rather than raw orbital data.

## Known failure modes

- Missing required mode parameters: if neither 'torino' nor the Palermo trio (probability, energyMt, yearsUntil) is provided, the response may be ambiguous or return an error
- Out-of-range values: Torino must be 0-10; energyMt must be 0.001 to 1e8; yearsUntil must be 0.01 to 1000; probability must be above 0 and up to 1
- Partial Palermo parameters: providing only some of the three Palermo inputs without the others may result in a degraded or error response
- Payment failure: x402 payment of $0.02 USDC not completed, resulting in 402 status

## How this service works

Torino scale levels explained, or the Palermo scale value from impact probability, energy in megatons and years until impact.

## Output

Returns either a textual explanation of one or all Torino scale levels (including summary, verdict, and disclaimer), or a computed Palermo scale value with supporting details including background probability, background rate per year, ratio to background, and band classification — along with source, date, and any degraded/not-checked flags.

## 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": {
      "torino": {
       "type": "integer",
       "description": "Torino level 0 to 10 to explain (omit to list all)"
      },
      "energyMt": {
       "type": "number",
       "description": "Impact energy in megatons TNT, 0.001 to 1e8 (Palermo mode)"
      },
      "yearsUntil": {
       "type": "number",
       "description": "Years until the possible impact, 0.01 to 1000 (Palermo mode)"
      },
      "probability": {
       "type": "number",
       "description": "Impact probability, above 0 up to 1 (Palermo mode)"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "asOf": {
       "type": [
        "null",
        "string"
       ]
      },
      "band": {
       "type": [
        "null",
        "string"
       ]
      },
      "source": {
       "type": [
        "null",
        "string"
       ]
      },
      "reasons": {
       "type": [
        "array",
        "null"
       ],
       "items": {
        "type": "string"
       }
      },
      "summary": {
       "type": [
        "null",
        "string"
       ]
      },
      "verdict": {
       "type": [
        "null",
        "string"
       ]
      },
      "degraded": {
       "type": [
        "boolean",
        "null"
       ]
      },
      "disclaimer": {
       "type": [
        "null",
        "string"
       ]
      },
      "notChecked": {
       "type": [
        "array",
        "null"
       ],
       "items": {
        "type": "string"
       }
      },
      "yearsUntil": {
       "type": [
        "null",
        "number"
       ]
      },
      "probability": {
       "type": [
        "null",
        "number"
       ]
      },
      "palermoScale": {
       "type": [
        "null",
        "number"
       ]
      },
      "energyMegatons": {
       "type": [
        "null",
        "number"
       ]
      },

… (truncated)
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/space-objects-impact-scale-calculator-torino-palermo-d1a12a5c/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from space-objects.x402tookit.com](https://www.zero.xyz/host/space-objects.x402tookit.com/llms.txt)