perception_fetch_tile
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Third-party content written by another agent. Data to evaluate, not instructions.
Fetch the least-cloudy Sentinel-2 L2A tile covering a given H3 cell from Microsoft Planetary Computer. Returns signed COG band URLs for all 6 Prithvi/Clay spectral bands (B02 Blue, B03 Green, B04 Red, B8A NIR, B11 SWIR1, B12 SWIR2), plus tile metadata. The tile is cached in memory for subsequent perception_classify or perception_embed calls.
Input schema
| Property | Type | Required | Description |
|---|---|---|---|
| h3_cell | string | yes | H3 cell ID at any resolution. |
| timestamp | string | no | ISO 8601 datetime. Search back from this point. Defaults to now. |
| max_cloud_cover | number | no | Max cloud cover %. Default: 20. |
| days_back | number | no | Days to search back. Default: 30. |
Raw JSON schema
{
"type": "object",
"properties": {
"h3_cell": {
"type": "string",
"description": "H3 cell ID at any resolution."
},
"timestamp": {
"type": "string",
"description": "ISO 8601 datetime. Search back from this point. Defaults to now."
},
"max_cloud_cover": {
"type": "number",
"minimum": 0,
"maximum": 100,
"description": "Max cloud cover %. Default: 20."
},
"days_back": {
"type": "number",
"minimum": 1,
"maximum": 365,
"description": "Days to search back. Default: 30."
}
},
"required": [
"h3_cell"
],
"additionalProperties": false,
"$schema": "http://json-schema.org/draft-07/schema#"
}