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bbrauzzi

stac-eo-mcp

by bbrauzzi
OverviewSchemaSourceRelated ServersDiscussionsAdmin
Python
Local

Server Configuration

Describes the environment variables required to run the server.

NameRequiredDescriptionDefault
STAC_EO_MCP_CATALOGNoDefault STAC catalog to use. Valid values are 'planetary-computer' or 'earth-search'.planetary-computer
STAC_EO_MCP_LOG_LEVELNoLogging level. Logs are written to stderr only.INFO
STAC_EO_MCP_MAX_SCENESNoMaximum number of dates read by the time_series tool. If more are available, they are sampled evenly.24
STAC_EO_MCP_OUTPUT_DIRNoDirectory where generated PNG and GeoTIFF files are written.~/stac-eo-mcp-output
STAC_EO_MCP_MAX_AREA_KM2NoLargest bounding box area allowed for pixel reads, in square kilometers.100
STAC_EO_MCP_MAX_SEARCH_LIMITNoMaximum number of scenes returned by the search_scenes tool.50

Instructions

Guidance the server publishes about itself, which clients place ahead of the tool catalog so the model reads it before choosing anything.

This server publishes no instructions, or was last inspected before Glama recorded them.

Capabilities

Features and capabilities supported by this server

Protocol revision2025-11-25

CapabilityDetails
tools
{
  "listChanged": false
}
prompts
{
  "listChanged": false
}
resources
{
  "subscribe": false,
  "listChanged": false
}

Tools

Functions exposed to the LLM to take actions

NameDescription
list_collectionsA

List the collections available in a STAC catalog, with a one-sentence description.

Use the returned ids as `collection` in search_scenes and get_scene_details.
search_scenesA

Search scenes intersecting a bbox in a date range, newest first.

Returns id, date, cloud cover, a simplified footprint and a preview image link. Cloud cover is for the whole tile, not the bbox.

get_scene_detailsB

Key metadata and the list of assets (bands, previews, metadata files) of one scene.

compute_indexA

Compute NDVI, NDWI or NBR on one Sentinel-2 L2A scene, reading only the bbox window.

Clouds, shadows and no-data are masked with the SCL layer. Returns min, max, mean, std
and the share of valid pixels, plus file paths when `save` is set. No raster data is
returned. Area is limited (default 100 km²).
time_seriesA

Mean of an index over a bbox for each Sentinel-2 acquisition date in a range.

One scene per day, cloudy dates skipped with a reason, sampled evenly when there are more dates than the server limit (default 24). Includes a summary (mean, min/max date, change from first to last). Can take 10-60 s for long ranges.

Prompts

Interactive templates invoked by user choice

NameDescription
analyze_vegetationVegetation health of an area over the last months (NDVI time series).

Resources

Contextual data attached and managed by the client

NameDescription
indicesFormulas, Sentinel-2 bands, interpretation and the SCL cloud mask.
catalogsSupported STAC catalogs, the default one and the server's request limits.
Deploy Server
One endpoint for every MCP toolRayrun runs every MCP server behind one URL and holds the credentials. Each call is decided per client, tool, and argument, then recorded.ray.runAd

TDQS

A4/5.0

Scored across 5 tools

Disambiguation5/5

Each tool targets a distinct stage of the STAC workflow: catalog browsing, scene search, scene metadata, single-scene index computation, and multi-date time series. The only potential overlap is compute_index vs. time_series, but their scopes (one scene vs. a date range) and descriptions make the boundary clear.

Naming Consistency4/5

Four of five names follow a clear verb_noun pattern (list_collections, search_scenes, get_scene_details, compute_index). The outlier is time_series, a noun phrase with no verb, but it remains readable and predictable in context.

Tool Count5/5

Five tools are well-scoped for a focused STAC/EO server, covering discovery, retrieval, and two levels of analysis without filler. Each tool earns its place and the surface is neither thin nor bloated.

Completeness4/5

The core read-only EO workflow is covered: collections, scene search, scene details, and index computation/aggregation. Minor gaps exist, such as no dedicated collection-detail tool, no explicit cloud-cover filter in search_scenes, and no asset download/read tool.

Maintenance

ActivityMaintained
ResponsivenessNo issues

Resources