---
title: "Supported NASA GIBS projections"
method: GET
path: "/api/v1/environment/nasa-gibs/projections"
tags: ["Environment"]
---

# Supported NASA GIBS projections

`GET /api/v1/environment/nasa-gibs/projections`

Static catalog of the four projections NASA GIBS serves via WMTS: `epsg4326` (Geographic / WGS84, global lat-lon), `epsg3857` (Web Mercator), `epsg3413` (NSIDC Sea Ice Polar Stereographic North, Arctic), `epsg3031` (Antarctic Polar Stereographic). Each entry also reports the WMTSCapabilities URL and the set of TileMatrixSets (resolution tiers) declared in the projection when the catalog has already been cached. Data: NASA GIBS / NASA Earthdata (US public domain).

## Response `200`

Supported projections. Data: NASA GIBS / NASA Earthdata (US public domain).

- EnvelopeNasaGibsProjectionsPayload
  - `data` NasaGibsProjectionsPayload, required — Response payload for `/projections`.
    - `count` integer, required — Number of supported projections.
    - `projections` GibsProjectionEntry[], required — Projection catalog entries. Data: NASA GIBS / NASA Earthdata (US public domain).
      - `code` string, required — EPSG code used by NASA GIBS (lowercase).
      - `name` string, required — Human-readable projection name.
      - `capabilities_url` string, required — URL of the NASA GIBS WMTSCapabilities.xml document for this projection.
      - `tile_matrix_sets` string[] — TileMatrixSet identifiers available in this projection's catalog.
      - `layer_count` integer, nullable — Number of layers served by NASA GIBS in this projection (if the catalog is already cached).
    - `attribution` string, required — Attribution string for user-facing surfaces.
  - `meta` SugraMeta, required — Metadata attached to every /api/v1/* response envelope.
    - `endpoint` string, required — Requested endpoint path.
    - `data_time` string, required — ISO 8601 UTC timestamp of the source data, not of the request.
    - `response_time` string, required — ISO 8601 UTC timestamp when this response was produced.
    - `provider` string, required — API name and version.
    - `source` string, nullable — Identifier of the primary upstream source used for this response.
    - `attribution` string, nullable — Human-readable attribution mandated by an upstream source (e.g. a securities regulator or self-regulatory organization). Present only on responses whose source requires the owner and source to be clearly identified. Do not remove or alter it when using the response.
    - `fallback_used` boolean, nullable — True when the primary source failed and a fallback produced the data.
    - `fallback_chain` string[], nullable — Ordered list of sources attempted, in the order they were tried.
    - `cached` boolean, nullable — True when this response was served from the internal cache.
    - `stale` boolean, nullable — True when the cached response was returned after the upstream rate-limited or errored. Clients can use this to detect degraded data.

## Other responses

- `401` — Missing or invalid `x-api-key` header.
- `429` — Daily rate limit exceeded. Check `X-RateLimit-Reset` for the next window.
- `503` — Upstream source is temporarily unavailable. Retry after a short delay.

---

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