Planet size, mass, density, gravity and escape speed as ratios to Earth, with in
Planet size, mass, density, gravity and escape speed as ratios to Earth, with insolation if luminosity and orbit are given.
Answeringour last check, 2026-10-21
1 of 1checks answered this week
933 msmedian answer time
$0.02listed price per call
$0.02price it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
GET https://exoplanets-nasa.x402tookit.com/earth-comparison
| Category | Everything else |
|---|---|
| Provider host | exoplanets-nasa.x402tookit.com |
| Networks | eip155:137, eip155:42161, eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp |
| Payment schemes | exact |
| Self-reported calls, 30 days | 1 from 1 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-10-21 | valid payment request | 402 | $0.02 | 933 ms |
Example input (from the provider)
{
"method": "GET",
"queryParams": {
"massEarth": 0.692,
"radiusEarth": 0.92
},
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"luminositySolar": {
"description": "Star luminosity in solar units (with orbitAu)",
"type": "number"
},
"massEarth": {
"description": "Planet mass in Earth masses, 0.001 to 20000",
"type": "number"
},
"orbitAu": {
"description": "Semi-major axis in AU (with luminositySolar)",
"type": "number"
},
"radiusEarth": {
"description": "Planet radius in Earth radii, 0.05 to 30",
"type": "number"
}
},
"required": [
"radiusEarth"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"asOf": {
"type": [
"null",
"string"
]
},
"degraded": {
"type": [
"boolean",
"null"
]
},
"density": {
"type": [
"null",
"number"
]
},
"densityGcc": {
"type": [
"null",
"number"
]
},
"disclaimer": {
"type": [
"null",
"string"
]
},
"escapeVelocityKmS": {
"type": [
"null",
"number"
]
},
"escapeVelocityRatio": {
"type": [
"null",
"number"
]
},
"formulas": {
"type": [
"null",
"string"
]
},
"mass": {
"type": [
"null",
"number"
]
},
"notChecked": {
"items": {
"type": "string"
},
"type": [
"array",
"null"
]
},
"radius": {
"type": [
"null",
"number"
]
},
"radiusEarth": {
"type": [
"null",
"number"
]
},
"reasons": {
"items": {
"type": "string"
},
"type": [
"array",
"null"
]
},
"sizeClass": {
"type": [
"null",
"string"
]
},
"source": {
"type": [
"null",
"string"
]
},
"summary": {
"type": [
"null",
"string"
]
},
"surfaceGravity": {
"type": [
"null",
"number"
]
},
"verdict": {
"type": [
"null",
"string"
]
}
},
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}