# Saylor Innovations Data Desk – Sea Ice Extent

> Saylor Innovations Data Desk – Sea Ice Extent is a paid API for AI agents from saylorinnovations.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-18).

Returns the latest daily Arctic or Antarctic sea ice extent from NSIDC, including anomaly vs 1991–2020 mean, rank, record low, and recent history

## Facts

- Endpoint: GET https://saylorinnovations.com/api/climate/sea-ice?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-18
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/saylor-innovations-data-desk-sea-ice-extent-fd6491db
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_C3B4LWSeGfwa9TMvCLZoL

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability saylor-innovations-data-desk-sea-ice-extent-fd6491db
```

Example prompt: What's today's Arctic sea ice extent, how does it compare to the 1991–2020 average for this date, and what rank does it hold among lowest extents on record? Pull the last 60 days of history too.

## When to prefer this

Choose this endpoint when you need authoritative, NSIDC-sourced sea ice extent data with built-in climatological context (anomaly, rank, record) rather than raw data you'd have to process yourself. It's ideal for climate dashboards, environmental monitoring agents, or research summaries that need both the current value and historical trend in a single call. Prefer this over general climate APIs when polar sea ice is specifically needed.

## Known failure modes

- Invalid hemisphere value returns an error or defaults to north
- days parameter out of range (>365) may be clamped or return an error
- NSIDC data lag may mean the latest value is 1–2 days behind real-time
- Payment failure (HTTP 402) if USDC balance is insufficient
- Network timeout if upstream NSIDC data source is slow or unavailable

## How this service works

Arctic or Antarctic sea ice extent from NSIDC - latest daily value, anomaly versus the 1991-2020 mean for the same day, rank, record low and recent history

## Output

A JSON object with today's sea ice extent in million km², the anomaly in both absolute (million km²) and percentage terms versus the 1991–2020 climatological mean for the same calendar day, the rank among lowest extents for that date, the record low value, the same-day value from last year, the hemisphere covered, years compared, a note/caveat, the data source attribution, and an array of historical daily extent values ordered by time.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "days": {
       "type": "string",
       "description": "optional 1-365 of history, default 30"
      },
      "hemisphere": {
       "type": "string",
       "description": "north (default) or south"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "json"
    },
    "example": {
     "type": "object",
     "required": [
      "hemisphere",
      "extent_million_km2",
      "history"
     ],
     "properties": {
      "date": {
       "type": "string",
       "description": "Date (YYYY-MM-DD)"
      },
      "note": {
       "type": "string",
       "description": "Caveat or context for reading the result"
      },
      "source": {
       "type": "string",
       "description": "Data source the values come from"
      },
      "history": {
       "type": "array",
       "description": "Historical values, in time order"
      },
      "hemisphere": {
       "type": "string",
       "description": "Hemisphere the series covers: north or south"
      },
      "years_compared": {
       "type": "number",
       "description": "Years compared"
      },
      "anomaly_percent": {
       "type": [
        "number",
        "null"
       ],
       "description": "Anomaly, as a percentage"
      },
      "extent_million_km2": {
       "type": "number",
       "description": "Extent million km2"
      },
      "same_day_last_year": {
       "type": [
        "number",
        "null"
       ],
       "description": "Same day last year"
      },
      "anomaly_million_km2": {
       "type": [
        "number",
        "null"
       ],
       "description": "Anomaly million km2"
      },
      "record_low_for_date": {
       "description": "Record low for date"
      },
      "rank_lowest_for_date": {
       "type": "number",
       "description": "Rank lowest for date"
      },
      "same_day_1991_2020_mean": {
       "type": [
        "number",
        "null"
       ],
       
… (truncated)
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/saylor-innovations-data-desk-sea-ice-extent-fd6491db/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from saylorinnovations.com](https://www.zero.xyz/host/saylorinnovations.com/llms.txt)