Resolve a place name to coordinates and a bounding box.

Tries Development Seed's Gazet small-model geocoder first, then falls back to OSM Nominatim. Use concise names ("Barotse Floodplain", "Chelan County") rather than long phrases. Returns {name, lat, lon, bbox: [w, s, e, n], source}.

List the STAC catalogs this server can search, with what each is good for.

Find dataset collections matching keywords, across all catalogs or one.

Case-insensitive match against collection id, title, description, and keywords. Returns up to 20 hits with {catalog, id, title, summary}.

Get a collection's description, extent, and asset/band layout.

Search a STAC catalog for imagery/data items.

Provide either bbox [w, s, e, n] or a place name (geocoded for you). datetime_range is RFC3339, e.g. "2026-06-01T00:00:00Z/2026-07-09T00:00:00Z". Returns compact items sorted newest first; feed self_url/ids into preview_item, compute_statistics, or render_map.

Get a browser-openable PNG preview URL for a STAC item.

Routes to the right raster backend per catalog: titiler.xyz for Earth Search, NASA VEDA's raster API, or Planetary Computer's signing data API. Optional rescale like "0,3000" for non-visual assets.

Compute pixel statistics (min/max/mean/std/histogram) for a STAC item.

expression is band math over asset names, e.g. "(nir-red)/(nir+red)" for NDVI on Sentinel-2 (Earth Search asset names). Optionally clip to an AOI GeoJSON Feature. Backed by TiTiler /stac/statistics.

Compare two time windows over a place: matched scenes, index delta, swipe map.

The most common Earth question is "what changed?" — this answers it in one call. Windows are RFC3339 ranges ("2026-06-01T00:00:00Z/2026-06-30T23:59:59Z"); window_after defaults to the last 14 days, window_before to roughly one month earlier. Picks Sentinel-2 scenes from the SAME MGRS tile (best AOI coverage, lowest cloud), computes the expression's stats for both dates, and writes a side-by-side swipe map. Returns scenes, means, delta, and map_path.

XYZ tile URL template ({z}/{x}/{y}) for a STAC item, for web maps.

For index layers (NDVI etc.) pass expression over asset names, e.g. "(nir-red)/(nir+red)" with rescale="-1,1" and colormap_name="rdylgn" — supported on earth-search; ignored for veda/planetary-computer.

Write a self-contained interactive HTML map and return its file path.

layers is a list of: {"type": "item", "name": ..., "catalog": ..., "collection_id": ..., "item_id": ..., "assets": [...], "rescale": "0,3000", "colormap_name": ..., "expression": "(nir-red)/(nir+red)"} # expression for index layers {"type": "raster", "name": ..., "tiles": "https://..{z}/{x}/{y}.."} {"type": "geojson", "name": ..., "data": , "color": "#hex"} Item layers resolve to the right tiling backend automatically. The HTML is shareable: MapLibre + live tile URLs, no server of ours required.

compare: True renders two raster layers as a draggable swipe (before/after), False stacks them as toggleable overlays. Default None auto-decides: swipe only when both rasters come from the SAME collection (a comparison), overlay when they differ (e.g. burn severity over imagery — pass opacity ~0.75).

Current natural events and disaster alerts, optionally filtered to a bbox.

Combines NASA EONET (wildfires, storms, volcanoes, floods...) and GDACS global disaster alerts. bbox is [w, s, e, n]. Returns compact event lists with coordinates suitable for mapping.

Recent and forecast weather for a point (Open-Meteo, no key needed).

Returns daily max/min temperature, precipitation, max wind speed, and dominant wind direction (degrees, meteorological: 0=N, 90=E — the direction wind comes FROM) for past_days back and 7 days ahead. Wind direction matters for smoke, ash, and plume dispersal questions.