# NSIDC Web Service Documentation Index API

> NSIDC Web Service Documentation Index API on Apizie: 4 endpoints (View the facet information corresponding to a search, Search documents using the OpenSearch 1.1 Specification, Describes the web interface of NSIDC's data search engine, Suggest search terms based on a partial query) returned as clean JSON through one API key. 4 endpoints are live now. Call it over REST at https://apizie.tech/v1/open-data:nsidc/{endpoint} or from Claude, ChatGPT and Cursor through the Apizie MCP server. Free plan: 1,000 requests a month.

- Project key: `open-data:nsidc`
- Category: Open Data
- Status: live
- Source: https://nsidc.org
- Page: https://apizie.tech/api/open-data/nsidc
- OpenAPI: https://apizie.tech/api/open-data/nsidc/openapi.json

This API allows programmers to build National Snow and Ice Data Center data and metadata services into their applications.

## Endpoints

### View the facet information corresponding to a search
`GET https://apizie.tech/v1/open-data:nsidc/facets`

| Parameter | Type | Required | Description |
|---|---|---|---|
| searchTerms | string | no | URL-encoded keyword or keywords desired by the client; OpenSearch 1.1 |
| count | integer | no | The number of search results per page desired by the client; OpenSearch 1.1 |
| startIndex | integer | no | First search result desired by the search client; OpenSearch 1.1 |
| spatial | string | no | 4 comma separated values - W, S, E, N; OpenSearch-Geo 1.0, "box" parameter |
| sortKeys | string | no | Sort the results by most relevant (default), smallest or largest spatial area, shortest or longest temporal duration, or most recently… |
| startDate | string | no | The start date in yyyy-mm-dd format |
| endDate | string | no | The end date in yyyy-mm-dd format |
| facetFilters | string | no | Describes faceted restrictions on the search. A URL-encoded JSON object where the keys are the names of the facet, and the values are… |
| source | string | no | Custom parameter for selecting which source to use; the Arctic Data Explorer (ADE) uses data aggregated from many sources, including, but… |

### Search documents using the OpenSearch 1.1 Specification
`GET https://apizie.tech/v1/open-data:nsidc/open-search`

| Parameter | Type | Required | Description |
|---|---|---|---|
| searchTerms | string | no | URL-encoded keyword or keywords desired by the client; OpenSearch 1.1 |
| count | integer | no | The number of search results per page desired by the client; OpenSearch 1.1 |
| startIndex | integer | no | First search result desired by the search client; OpenSearch 1.1 |
| spatial | string | no | 4 comma separated values - W, S, E, N; OpenSearch-Geo 1.0, "box" parameter |
| sortKeys | string | no | Sort the results by most relevant (default), smallest or largest spatial area, shortest or longest temporal duration, or most recently… |
| startDate | string | no | The start date in yyyy-mm-dd format |
| endDate | string | no | The end date in yyyy-mm-dd format |
| facetFilters | string | no | Describes faceted restrictions on the search. A URL-encoded JSON object where the keys are the names of the facet, and the values are… |
| source | string | no | Custom parameter for selecting which source to use; the Arctic Data Explorer (ADE) uses data aggregated from many sources, including, but… |

### Describes the web interface of NSIDC's data search engine
`GET https://apizie.tech/v1/open-data:nsidc/opensearch-description`

### Suggest search terms based on a partial query
`GET https://apizie.tech/v1/open-data:nsidc/id`

| Parameter | Type | Required | Description |
|---|---|---|---|
| q | string | yes | Search terms typed into the interface (minimum two characters) |
| source | string | yes | Custom parameter for selecting which source to use; the Arctic Data Explorer (ADE) uses data aggregated from many sources, including, but… |

## Example
```
curl "https://apizie.tech/v1/open-data:nsidc/facets" \
  -H "x-api-key: $APIZIE_KEY"
```

## FAQ

### How do I call the NSIDC Web Service Documentation Index API?
Create a free Apizie key, then send GET https://apizie.tech/v1/open-data:nsidc/facets with the header x-api-key. Every endpoint returns { project, data, timestamp }.

### Is the NSIDC Web Service Documentation Index API free on Apizie?
Yes. The Free plan includes 1,000 requests a month at 100 requests a minute, no credit card.

### Can AI agents use the NSIDC Web Service Documentation Index API?
Yes. Add the Apizie MCP server (https://apizie.tech/mcp) to Claude, ChatGPT, Cursor or VS Code, then ask in plain language. The agent calls run_scraper with project key open-data:nsidc.

### What is the status of the NSIDC Web Service Documentation Index API?
Live: works with just an Apizie key