Api Endpoint

natur.halowerk.com

Returns the latest instantaneous values at a USGS streamgage, together with what makes them readable. A stage of three point four feet means nothing on its own, so each value is placed against the station own record for the requested reference period: the minimum, median and maximum, and the percentile the current reading falls at. The reference period is stated with the comparison, because a percentile without a window is not a statistic.

Open interactive test console

Offering

Provider: natur.halowerk.com
Method: POST
Offering type: Api Endpoint
Transport type: http
Category: Weather And Environment
Delivery: Not provided
Pricing model: Not provided
x402 version: 2

Endpoint context

URL: https://natur.halowerk.com/v1/river-gauge
MIME type: Not provided
First seen: 2026-10-16T01:54:06.400Z
Last seen: 2026-11-01T15:22:27.912Z
Tags: None supplied

Website

Payment pricing

x402 payment terms are the authoritative price for calling this endpoint.

Payment option 1: 0.004 USDC
Atomic price: 4000 · Network: eip155:8453 · Asset: USDC · Scheme: exact

Raw x402 terms

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "4000",
    "payTo": "0x2880EdfFF13100677Bf97A3CBdF3Bc34771C4E5E"
  }
]

Observed health

Status: Healthy
Latest latency: 316 ms
Average latency: 755 ms
HTTP status: 204
Last checked: 2026-11-03T15:03:27.270Z
Reachability: 100% over 10 checks

Latency is measured to the first response headers. A reachable result does not verify response accuracy or merchant identity.

Input schema

{
  "additionalProperties": false,
  "properties": {
    "body": {
      "additionalProperties": false,
      "properties": {
        "reference_days": {
          "default": 30,
          "description": "Window used to place the current reading in context.",
          "maximum": 365,
          "minimum": 2,
          "type": "integer"
        },
        "site_id": {
          "description": "USGS site number, e.g. 01646500.",
          "maxLength": 20,
          "minLength": 6,
          "type": "string"
        }
      },
      "required": [
        "site_id"
      ],
      "type": "object"
    },
    "bodyType": {
      "enum": [
        "json",
        "form-data",
        "text"
      ],
      "type": "string"
    },
    "method": {
      "enum": [
        "POST",
        "PUT",
        "PATCH"
      ],
      "type": "string"
    },
    "type": {
      "const": "http",
      "type": "string"
    }
  },
  "required": [
    "type",
    "method",
    "bodyType",
    "body"
  ],
  "type": "object"
}

Output schema

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "properties": {
    "input": {
      "additionalProperties": false,
      "properties": {
        "body": {
          "additionalProperties": false,
          "properties": {
            "reference_days": {
              "default": 30,
              "description": "Window used to place the current reading in context.",
              "maximum": 365,
              "minimum": 2,
              "type": "integer"
            },
            "site_id": {
              "description": "USGS site number, e.g. 01646500.",
              "maxLength": 20,
              "minLength": 6,
              "type": "string"
            }
          },
          "required": [
            "site_id"
          ],
          "type": "object"
        },
        "bodyType": {
          "enum": [
            "json",
            "form-data",
            "text"
          ],
          "type": "string"
        },
        "method": {
          "enum": [
            "POST",
            "PUT",
            "PATCH"
          ],
          "type": "string"
        },
        "type": {
          "const": "http",
          "type": "string"
        }
      },
      "required": [
        "type",
        "method",
        "bodyType",
        "body"
      ],
      "type": "object"
    }
  },
  "required": [
    "input"
  ],
  "type": "object"
}