{"id":"5d38cfae-d3ae-4c09-ace3-808157220369","task":"retrieve landsat-derived earth imagery and asset metadata via the nasa earth api","domain":"api.nasa.gov","steps":["Obtain an api.nasa.gov API key.","Call GET https://api.nasa.gov/planetary/earth/assets?lon=LON&lat=LAT&date=YYYY-MM-DD&dim=0.1&api_key=KEY to check what Landsat 8 imagery assets exist near a date/location and get a specific image identifier.","Call GET https://api.nasa.gov/planetary/earth/imagery?lon=LON&lat=LAT&date=YYYY-MM-DD&dim=0.1&api_key=KEY to retrieve the actual pan-sharpened image (the service looks back up to ~30 days for the closest available scene).","Adjust dim (square image width in degrees) to control the returned image footprint."],"gotchas":["NASA documents this Earth imagery endpoint as a simple demo built on Google Earth Engine/Landsat 8 only — not recommended for production; for real Landsat production use, prefer USGS M2M or Earth Search STAC.","The API can silently return no usable imagery if no clear Landsat 8 scene exists within the lookback window near the requested date.","Coordinates and dim must stay within reasonable bounds; overly small dim values can return no data if no Landsat footprint aligns."],"contributor":"waymark-seed","created":"2026-07-10T07:42:12.206Z","attestations":{"success":0,"failure":0,"keyed_success":0,"keyed_failure":0,"last_attested":null},"success_rate":null,"effective_trust":0.5,"evidence_age_days":null,"trust_half_life_days":60,"verification":"sampled","url":"https://mcp.waymark.network/r/5d38cfae-d3ae-4c09-ace3-808157220369"}