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One item

GET
/v1/collections/{collectionId}/items/{itemId}
curl --request GET \
  --url https://api.satellitedata.net/v1/collections/sentinel-2-l2a/items/S2C_T15TVK_20260712T171233_L2A

Returns one STAC item by native id, with assets pointing at the public upstream COGs and the normalized platform, mask source and mask capabilities. Landsat assets are s3 URLs in the requester-pays usgs-landsat bucket, which the API never presigns. Free and cached.

Parameters

Section titled “Parameters”

Path Parameters

Section titled “Path Parameters”
collectionId
required
string
/^[A-Za-z0-9_.-]+$/

Collection id or alias without a slash, for example sentinel-2-l2a or S2L2A.

Example 

sentinel-2-l2a
itemId
required
string

Native item id.

Example 

S2C_T15TVK_20260712T171233_L2A

Responses

Section titled “Responses”

200

Section titled “200”

The item.

Media typeapplication/geo+json

STAC item.

object
type
required

Always Feature.

string
Allowed value: Feature
stac_version
required

STAC version.

string
stac_extensions

Extensions.

Array<string>
id
required

Native upstream item id.

string
collection

Collection id.

string
geometry
required
One of:

A GeoJSON geometry.

object
type
required

GeoJSON geometry type.

string
Allowed values: Point MultiPoint LineString MultiLineString Polygon MultiPolygon
coordinates
required

GeoJSON coordinates in CRS84 longitude and latitude (RFC 7946).

array
bbox

Bounding box as [west, south, east, north] in CRS84 longitude and latitude, or six numbers with heights.

Array<number>
>= 4 items <= 6 items
properties
required

Item properties. Any property listed by queryables can appear; the common ones are named here.

object
datetime
required

Acquisition time, UTC.

string | null format: date-time
platform

Normalized lowercase platform, for example sentinel-2c or landsat-9.

string
constellation

Constellation.

string
instruments

Instruments.

Array<string>
eo:cloud_cover

Scene cloud cover percentage from the producer.

number
<= 100
s2:mgrs_tile

Sentinel-2 MGRS tile.

string
s2:processing_baseline

Sentinel-2 processing baseline, which decides the DN offset.

string
landsat:wrs_path

Landsat WRS-2 path.

string
landsat:wrs_row

Landsat WRS-2 row.

string
sdn:source_collection

Native collection of an item returned through optical-sr.

string
Allowed values: sentinel-2-l2a dem landsat-ot-l2 landsat-etm-l2 landsat-tm-l2 hls optical-sr sentinel-1-rtc sentinel-2-l1c landsat-ot-l1 landsat-etm-l1 landsat-tm-l1 landsat-mss-l1
sdn:mask_source

Cloud-mask source for the item.

string
Allowed values: scl qa_pixel fmask s2cloudless none
sdn:mask_capabilities

Mask classes the item can detect.

Array<string>
sdn:harmonization

Harmonization level that applies to this item at the collection default.

string
Allowed values: none offset_removed bandpass_adjusted nbar
key
additional properties
any
assets
required

Assets keyed by native band name or role.

object
key
additional properties

STAC asset. href points at the public upstream COG.

object
href
required

Asset URL.

string format: uri
type

Media type.

string
title

Title.

string
roles

Asset roles such as data, overview or cloud.

Array<string>
sdn:band

Band name the asset holds, when it holds one band.

string
key
additional properties
any
links
required

Links, including self, collection and preview.

Array<object>

A STAC and OGC API link object.

object
href
required

Link target.

string format: uri
rel
required

Relation type, such as self, root, parent, next, prev, items, queryables, tiles or license.

string
type

Media type of the target.

string
title

Human-readable title.

string
method

HTTP method for the link, GET unless stated. Paging POST /v1/search uses POST.

string
Allowed values: GET POST
body

Request body to send with a POST link, used for the next page of POST /v1/search.

object
key
additional properties
any
merge

When true the client merges body into the previous request body.

boolean

Example 

{
  "type": "Feature",
  "stac_version": "1.1.0",
  "stac_extensions": [
    "https://stac-extensions.github.io/eo/v2.0.0/schema.json",
    "https://stac-extensions.github.io/raster/v2.0.0/schema.json"
  ],
  "id": "S2C_T15TVK_20260712T171233_L2A",
  "collection": "sentinel-2-l2a",
  "geometry": {
    "type": "Polygon",
    "coordinates": [
      [
        [
          -94.27,
          44.16
        ],
        [
          -92.88,
          44.16
        ],
        [
          -92.88,
          45.15
        ],
        [
          -94.27,
          45.15
        ],
        [
          -94.27,
          44.16
        ]
      ]
    ]
  },
  "bbox": [
    -94.27,
    44.16,
    -92.88,
    45.15
  ],
  "properties": {
    "datetime": "2026-07-12T17:21:21Z",
    "platform": "sentinel-2c",
    "constellation": "sentinel-2",
    "instruments": [
      "msi"
    ],
    "eo:cloud_cover": 0.32,
    "s2:mgrs_tile": "15TVK",
    "s2:processing_baseline": "05.12",
    "sdn:source_collection": "sentinel-2-l2a",
    "sdn:mask_source": "scl",
    "sdn:mask_capabilities": [
      "nodata",
      "saturated_defective",
      "cloud",
      "cloud_shadow",
      "cirrus",
      "snow_ice",
      "water",
      "dark_terrain_shadow",
      "unclassified",
      "clear",
      "cloud_adjacent"
    ],
    "sdn:harmonization": "bandpass_adjusted"
  },
  "assets": {
    "B04": {
      "href": "https://e84-earth-search-sentinel-data.s3.us-west-2.amazonaws.com/sentinel-2-c1-l2a/15/T/VK/2026/7/S2C_T15TVK_20260712T171233_L2A/B04.tif",
      "type": "image/tiff; application=geotiff; profile=cloud-optimized",
      "roles": [
        "data"
      ],
      "sdn:band": "B04"
    },
    "B8A": {
      "href": "https://e84-earth-search-sentinel-data.s3.us-west-2.amazonaws.com/sentinel-2-c1-l2a/15/T/VK/2026/7/S2C_T15TVK_20260712T171233_L2A/B8A.tif",
      "type": "image/tiff; application=geotiff; profile=cloud-optimized",
      "roles": [
        "data"
      ],
      "sdn:band": "B8A"
    },
    "SCL": {
      "href": "https://e84-earth-search-sentinel-data.s3.us-west-2.amazonaws.com/sentinel-2-c1-l2a/15/T/VK/2026/7/S2C_T15TVK_20260712T171233_L2A/SCL.tif",
      "type": "image/tiff; application=geotiff; profile=cloud-optimized",
      "roles": [
        "cloud"
      ],
      "sdn:band": "SCL"
    }
  },
  "links": [
    {
      "href": "https://api.satellitedata.net/v1/collections/sentinel-2-l2a/items/S2C_T15TVK_20260712T171233_L2A",
      "rel": "self",
      "type": "application/geo+json"
    },
    {
      "href": "https://api.satellitedata.net/v1/collections/sentinel-2-l2a",
      "rel": "collection",
      "type": "application/json"
    },
    {
      "href": "https://api.satellitedata.net/v1/collections/sentinel-2-l2a/items/S2C_T15TVK_20260712T171233_L2A/preview.png",
      "rel": "preview",
      "type": "image/png"
    }
  ]
}

Headers

Section titled “Headers”
X-Request-Id
string

Request id for support and logs.

Example 
01JQ7Z3M8R5V2W6X9Y0A1B2C3D
ETag
string

Entity tag; includes the render version.

Example 
"r3-9f2c1a"
Cache-Control
string

Caching policy for CloudFront and browsers.

Example 
public, max-age=3600, s-maxage=2592000, stale-if-error=604800

404

Section titled “404”

No resource has this id.

Media typeapplication/problem+json

RFC 9457 problem details. Every 4xx and 5xx response uses this shape with media type application/problem+json. The type URL opens a documentation page that explains the cause and the fix.

object
type
required

URL of the documentation page for this problem type, stable for the life of /v1.

string format: uri
title
required

Short summary of the problem type. It does not change between occurrences.

string
status
required

HTTP status code, repeated for clients that lose the status line.

integer
>= 400 <= 599
detail
required

Explanation specific to this occurrence, written for a developer.

string
instance

Path of the request that failed.

string
code

Machine-readable problem code; equals the last path segment of type.

string
/^[a-z0-9-]+$/
requestId

Request id, also sent in X-Request-Id. Quote it in support requests.

string
errors

Field-level validation failures, present on 400 and 422.

Array<object>

One field-level failure.

object
pointer
required

JSON Pointer (RFC 6901) into the request body, or the query parameter name.

string
detail
required

What is wrong with that member.

string
retryAfter

Seconds until the request can succeed; equals the Retry-After header.

integer
limits

The limit that was hit and the value requested, for example maxWidth and requestedWidth.

object
key
additional properties
number
unitsEstimated

Units the request would have cost, computed before execution.

number
error

OAuth 2.0 error code (RFC 6749 section 5.2). Present only on /oauth/token responses.

string
Allowed values: invalid_request invalid_client invalid_grant unauthorized_client unsupported_grant_type invalid_scope
error_description

OAuth 2.0 error description. Present only on /oauth/token responses.

string
message

Copy of detail for openEO clients, which read message. Present only on /v1/openeo routes.

string
key
additional properties
any

Example 

{
  "type": "https://docs.satellitedata.net/problems/not-found",
  "title": "Not found",
  "status": 404,
  "detail": "No item S2C_T15TVK_20260714T170911_L2X in collection sentinel-2-l2a.",
  "instance": "/v1/collections/sentinel-2-l2a/items/S2C_T15TVK_20260714T170911_L2X",
  "code": "not-found",
  "requestId": "01JQ7Z3M8R5V2W6X9Y0A1B2C3D"
}

Headers

Section titled “Headers”
X-Request-Id
string

Request id for support and logs.

Example 
01JQ7Z3M8R5V2W6X9Y0A1B2C3D

429

Section titled “429”

A per-minute, concurrency, monthly or per-IP limit was hit. Retry-After says when to retry.

Media typeapplication/problem+json

RFC 9457 problem details. Every 4xx and 5xx response uses this shape with media type application/problem+json. The type URL opens a documentation page that explains the cause and the fix.

object
type
required

URL of the documentation page for this problem type, stable for the life of /v1.

string format: uri
title
required

Short summary of the problem type. It does not change between occurrences.

string
status
required

HTTP status code, repeated for clients that lose the status line.

integer
>= 400 <= 599
detail
required

Explanation specific to this occurrence, written for a developer.

string
instance

Path of the request that failed.

string
code

Machine-readable problem code; equals the last path segment of type.

string
/^[a-z0-9-]+$/
requestId

Request id, also sent in X-Request-Id. Quote it in support requests.

string
errors

Field-level validation failures, present on 400 and 422.

Array<object>

One field-level failure.

object
pointer
required

JSON Pointer (RFC 6901) into the request body, or the query parameter name.

string
detail
required

What is wrong with that member.

string
retryAfter

Seconds until the request can succeed; equals the Retry-After header.

integer
limits

The limit that was hit and the value requested, for example maxWidth and requestedWidth.

object
key
additional properties
number
unitsEstimated

Units the request would have cost, computed before execution.

number
error

OAuth 2.0 error code (RFC 6749 section 5.2). Present only on /oauth/token responses.

string
Allowed values: invalid_request invalid_client invalid_grant unauthorized_client unsupported_grant_type invalid_scope
error_description

OAuth 2.0 error description. Present only on /oauth/token responses.

string
message

Copy of detail for openEO clients, which read message. Present only on /v1/openeo routes.

string
key
additional properties
any

Example 

{
  "type": "https://docs.satellitedata.net/problems/rate-limited",
  "title": "Rate limit exceeded",
  "status": 429,
  "detail": "This key spent 300 of its 300 units in the current minute.",
  "instance": "/v1/process",
  "code": "rate-limited",
  "requestId": "01JQ7Z3M8R5V2W6X9Y0A1B2C3D",
  "retryAfter": 17,
  "limits": {
    "unitsPerMinute": 300,
    "unitsSpentThisMinute": 300
  }
}

Headers

Section titled “Headers”
X-Request-Id
string

Request id for support and logs.

Example 
01JQ7Z3M8R5V2W6X9Y0A1B2C3D
Retry-After
integer

Seconds to wait before retrying.

Example 
17
RateLimit
string

Remaining units and seconds to reset in the current window (IETF RateLimit header draft).

Example 
"units";r=287;t=41
RateLimit-Policy
string

Quota policy of the caller (IETF RateLimit header draft).

Example 
"units";q=300;w=60

500

Section titled “500”

An unexpected server error. No units are charged.

Media typeapplication/problem+json

RFC 9457 problem details. Every 4xx and 5xx response uses this shape with media type application/problem+json. The type URL opens a documentation page that explains the cause and the fix.

object
type
required

URL of the documentation page for this problem type, stable for the life of /v1.

string format: uri
title
required

Short summary of the problem type. It does not change between occurrences.

string
status
required

HTTP status code, repeated for clients that lose the status line.

integer
>= 400 <= 599
detail
required

Explanation specific to this occurrence, written for a developer.

string
instance

Path of the request that failed.

string
code

Machine-readable problem code; equals the last path segment of type.

string
/^[a-z0-9-]+$/
requestId

Request id, also sent in X-Request-Id. Quote it in support requests.

string
errors

Field-level validation failures, present on 400 and 422.

Array<object>

One field-level failure.

object
pointer
required

JSON Pointer (RFC 6901) into the request body, or the query parameter name.

string
detail
required

What is wrong with that member.

string
retryAfter

Seconds until the request can succeed; equals the Retry-After header.

integer
limits

The limit that was hit and the value requested, for example maxWidth and requestedWidth.

object
key
additional properties
number
unitsEstimated

Units the request would have cost, computed before execution.

number
error

OAuth 2.0 error code (RFC 6749 section 5.2). Present only on /oauth/token responses.

string
Allowed values: invalid_request invalid_client invalid_grant unauthorized_client unsupported_grant_type invalid_scope
error_description

OAuth 2.0 error description. Present only on /oauth/token responses.

string
message

Copy of detail for openEO clients, which read message. Present only on /v1/openeo routes.

string
key
additional properties
any

Example 

{
  "type": "https://docs.satellitedata.net/problems/internal",
  "title": "Internal error",
  "status": 500,
  "detail": "The request failed on our side and was logged. No units were charged.",
  "instance": "/v1/process",
  "code": "internal",
  "requestId": "01JQ7Z3M8R5V2W6X9Y0A1B2C3D"
}

Headers

Section titled “Headers”
X-Request-Id
string

Request id for support and logs.

Example 
01JQ7Z3M8R5V2W6X9Y0A1B2C3D