# Saylor Innovations Data Desk – Asteroid Close Approaches

> Saylor Innovations Data Desk – Asteroid Close Approaches 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 upcoming asteroid close approaches to Earth from NASA JPL, including object name, date, miss distance, velocity, and estimated size.

## Facts

- Endpoint: GET https://saylorinnovations.com/api/space/close-approaches?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-asteroid-close-approaches-c71017dd
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_oQ3oeBCBzK9FDaQ0neQkR

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-asteroid-close-approaches-c71017dd
```

Example prompt: What asteroids are making close approaches to Earth over the next 60 days, and can you filter to only those passing within 0.03 AU?

## When to prefer this

Choose this endpoint when you need real-time, structured close-approach data sourced directly from NASA JPL CNEOS, with the ability to filter by time window and miss distance. It is ideal for agents that need fast, affordable ($0.01/call) asteroid proximity lookups without building a NASA API integration themselves.

## Known failure modes

- Invalid days parameter (outside 1–365 range) returns an error
- Invalid max_au parameter (outside 0.001–0.5 range) returns an error
- NASA JPL upstream data unavailable causes service failure
- No close approaches in the specified window returns an empty approaches array
- Malformed query parameters result in a 400-level error

## How this service works

Upcoming asteroid close approaches to Earth from NASA JPL - object, date, miss distance in au, lunar distances and km, velocity and estimated size

## Output

A JSON object containing the look-ahead window in days, the maximum distance filter in AU, total number of approaches in the window, number of items returned, a source citation, a note/caveat, and an array of close-approach records each including the asteroid object name, approach date, miss distance in AU/lunar distances/km, relative velocity, and estimated size.

## 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 look-ahead window 1-365 days (default 30)"
      },
      "max_au": {
       "type": "string",
       "description": "optional maximum miss distance in au, 0.001-0.5 (default 0.05)"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "json"
    },
    "example": {
     "type": "object",
     "required": [
      "window_days",
      "approaches"
     ],
     "properties": {
      "note": {
       "type": "string",
       "description": "Caveat or context for reading the result"
      },
      "source": {
       "type": "string",
       "description": "Data source the values come from"
      },
      "returned": {
       "type": "number",
       "description": "Number of items in this response"
      },
      "approaches": {
       "type": "array"
      },
      "window_days": {
       "type": "number",
       "description": "Number of days in the lookback window"
      },
      "max_distance_au": {
       "type": "number",
       "description": "Max distance au"
      },
      "total_in_window": {
       "type": [
        "number",
        "null"
       ],
       "description": "Total in window"
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/saylor-innovations-data-desk-asteroid-close-approaches-c71017dd/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)