space.halowerk.com
Computes mean NDVI and an ordinary least-squares daily NDVI trend, then applies yield = intercept + mean_coefficient×mean_NDVI + trend_coefficient×daily_trend. It does not derive NDVI from imagery, account for crop stage or weather, or provide an agronomically calibrated forecast unless the caller supplies valid coefficients.
Offering
- Provider
- space.halowerk.com
- Method
- POST
- Offering type
- Api Endpoint
- Transport type
- http
- Category
- Weather And Environment
- Delivery
- Not provided
- Pricing model
- Not provided
- x402 version
- 2
Endpoint context
- URL
https://space.halowerk.com/v1/crop-yield-ndvi- MIME type
- application/json
- First seen
- 2026-10-16T01:54:06.400Z
- Last seen
- Tags
- None supplied
Payment pricing
x402 payment terms are the authoritative price for calling this endpoint.
- Payment option 1
- 0.003 USDC
Atomic price: 3000 · Network: eip155:8453 · Asset: USDC · Scheme: exact
Raw x402 terms
[
{
"scheme": "exact",
"network": "eip155:8453",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"amount": "3000",
"payTo": "0x2880EdfFF13100677Bf97A3CBdF3Bc34771C4E5E"
}
]Observed health
- Status
- Healthy
- Latest latency
- 316 ms
- Average latency
- 753 ms
- HTTP status
- 204
- Last checked
- Reachability
- 100% over 10 checks
Latency is measured to the first response headers. A reachable result does not verify response accuracy or merchant identity.
Input schema
{
"type": "object",
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"type": "string",
"enum": [
"POST",
"PUT",
"PATCH"
]
},
"bodyType": {
"type": "string",
"enum": [
"json",
"form-data",
"text"
]
},
"body": {
"type": "object",
"required": [
"observations",
"yield_intercept",
"yield_per_mean_ndvi",
"yield_per_daily_ndvi_trend",
"yield_unit"
],
"additionalProperties": false,
"properties": {
"observations": {
"type": "array",
"minItems": 2,
"maxItems": 10000,
"items": {
"type": "object",
"required": [
"day_after_planting",
"ndvi"
],
"additionalProperties": false,
"properties": {
"day_after_planting": {
"type": "integer",
"minimum": 0,
"maximum": 10000
},
"ndvi": {
"type": "number",
"minimum": -1,
"maximum": 1
}
}
}
},
"yield_intercept": {
"type": "number",
"minimum": -1000000000000,
"maximum": 1000000000000
},
"yield_per_mean_ndvi": {
"type": "number",
"minimum": -1000000000000,
"maximum": 1000000000000
},
"yield_per_daily_ndvi_trend": {
"type": "number",
"minimum": -1000000000000000,
"maximum": 1000000000000000
},
"yield_unit": {
"type": "string",
"minLength": 1,
"maxLength": 64
}
}
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"additionalProperties": false
}Output schema
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"observations": {
"items": {
"additionalProperties": false,
"properties": {
"day_after_planting": {
"maximum": 10000,
"minimum": 0,
"type": "integer"
},
"ndvi": {
"maximum": 1,
"minimum": -1,
"type": "number"
}
},
"required": [
"day_after_planting",
"ndvi"
],
"type": "object"
},
"maxItems": 10000,
"minItems": 2,
"type": "array"
},
"yield_intercept": {
"maximum": 1000000000000,
"minimum": -1000000000000,
"type": "number"
},
"yield_per_daily_ndvi_trend": {
"maximum": 1000000000000000,
"minimum": -1000000000000000,
"type": "number"
},
"yield_per_mean_ndvi": {
"maximum": 1000000000000,
"minimum": -1000000000000,
"type": "number"
},
"yield_unit": {
"maxLength": 64,
"minLength": 1,
"type": "string"
}
},
"required": [
"observations",
"yield_intercept",
"yield_per_mean_ndvi",
"yield_per_daily_ndvi_trend",
"yield_unit"
],
"type": "object"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"POST",
"PUT",
"PATCH"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
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"type": "object"
}
},
"required": [
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"type": "object"
}