# Orthogonal Soil Moisture Daily API

> Orthogonal Soil Moisture Daily API is a paid API for AI agents from x402.orthogonal.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).

Returns daily soil moisture percentage relative to field holding capacity at 0-10cm depth for one or more geographic coordinates over a specified date range

## Facts

- Endpoint: GET https://x402.orthogonal.com/speixFkLB/api/v1/soil-moisture-daily
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/orthogonal-soil-moisture-daily-api-e7f9ec7f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_mjeeQW3PqdTyOROy9SjF9

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 orthogonal-soil-moisture-daily-api-e7f9ec7f
```

Example prompt: Can you pull the daily soil moisture percentage at 0-10cm depth for my farm at latitude 37.7575, longitude -122.4262 from June 1 to June 30, 2025 in the America/Chicago timezone?

## When to prefer this

Choose this endpoint when you need volumetric soil moisture data specifically at the 0-10cm surface layer on a daily granularity for agricultural, environmental, or hydrological analysis. It supports batch queries across multiple coordinates in a single call, making it efficient for multi-site monitoring. Prefer this over general weather APIs when the specific use case is soil water content rather than precipitation or surface weather.

## Known failure modes

- Invalid or out-of-range latitude/longitude values causing data unavailability
- Date range too large or outside supported historical/forecast window
- Malformed coordinate format (must be comma-separated strings)
- Unsupported timeZoneId value
- Payment failure for x402 protocol resulting in 402 response
- No data available for remote or ocean coordinates

## How this service works

Daily soil moisture percentage relative to holding capacity at 0-10cm depth | ERROR: Unable to calculate price.

## Output

Returns daily soil moisture values expressed as a percentage relative to field holding capacity at the 0-10cm soil depth layer, for each requested coordinate and each day in the specified date range. Results are provided in JSON format and may include multiple location columns when multiple lat/lon pairs are supplied.

## 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": {
      "end": {
       "type": "string",
       "default": "2025-06-30",
       "example": "2025-06-30"
      },
      "start": {
       "type": "string",
       "default": "2025-06-01",
       "example": "2025-06-01"
      },
      "format": {
       "type": "string",
       "default": "json"
      },
      "latitude": {
       "type": "string",
       "default": "37.75750,42.35355,29.97991",
       "example": "37.75750,42.35355,29.97991"
      },
      "longitude": {
       "type": "string",
       "default": "-122.42616,-71.06053,-90.07447",
       "example": "-122.42616,-71.06053,-90.07447"
      },
      "timeZoneId": {
       "type": "string",
       "default": "America/Chicago"
      }
     }
    }
   },
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/orthogonal-soil-moisture-daily-api-e7f9ec7f/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402.orthogonal.com](https://www.zero.xyz/host/x402.orthogonal.com/llms.txt)