# Saylor Innovations German River Water Level

> Saylor Innovations German River Water Level is a paid API for AI agents from saylorinnovations.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-16).

Returns the current water level in centimetres for a named German river gauge station (e.g. Rhine at Cologne, Elbe at Dresden), along with mean low/high water status and navigation context.

## Facts

- Endpoint: GET https://saylorinnovations.com/api/water/germany/level?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/saylor-innovations-german-river-water-level-b5e3aa4d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_KovNa3kspW6J9ALtv34Vc

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-german-river-water-level-b5e3aa4d
```

Example prompt: What's the current water level at the Cologne gauge on the Rhine right now — is it above or below mean water?

## When to prefer this

Choose this endpoint when you need real-time river gauge readings for specific named stations on German rivers (Rhine, Elbe, Danube, etc.) with low-water/high-water context and navigation limit comparison. Prefer it over generic weather or flood APIs when you need precise centimetre-level gauge data tied directly to Pegelonline official measurements. Best suited for logistics, shipping route planning, flood monitoring, or hydrology dashboards focused on Germany.

## Known failure modes

- Unknown or misspelled station name returns an error or empty result — must use exact station identifiers like KOELN, KAUB, DRESDEN
- Station temporarily offline or reporting a data gap may return null or stale values for water_level_cm
- vs_navigation_limits and vs_mean_low_high may be null if the gauge does not report those thresholds
- lat/lon and km fields may be null for some lesser-known gauges
- Network or upstream Pegelonline API outage returns a service error

## How this service works

German river water level now - Rhine, Elbe, Danube and other Pegelonline gauges in cm with mean low and high water status

## Output

A JSON object containing the station name, river name, current water level in centimetres, the timestamp of measurement (UTC), latitude/longitude of the gauge, river kilometre marker, gauge zero elevation above sea level, measurement unit, status relative to mean low/high water, status relative to navigation limits, the data source (Pegelonline), and any contextual notes about reading the result.

## 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",
     "required": [
      "station"
     ],
     "properties": {
      "station": {
       "type": "string",
       "description": "Gauge name such as KOELN, KAUB, DRESDEN, MAGDEBURG, HAMBURG"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "json"
    },
    "example": {
     "type": "object",
     "required": [
      "station",
      "water_level_cm"
     ],
     "properties": {
      "km": {
       "type": [
        "number",
        "null"
       ]
      },
      "lat": {
       "type": [
        "number",
        "null"
       ],
       "description": "Latitude in decimal degrees"
      },
      "lon": {
       "type": [
        "number",
        "null"
       ],
       "description": "Longitude in decimal degrees"
      },
      "name": {
       "type": "string",
       "description": "Name"
      },
      "note": {
       "type": "string",
       "description": "Caveat or context for reading the result"
      },
      "unit": {
       "type": "string",
       "description": "Unit of measure"
      },
      "river": {
       "type": [
        "string",
        "null"
       ]
      },
      "source": {
       "type": "string",
       "description": "Data source the values come from"
      },
      "station": {
       "type": "string",
       "description": "Observation station"
      },
      "measured_at": {
       "type": "string",
       "description": "Measured at (UTC unless a time zone is given)"
      },
      "water_level_cm": {
       "type": "number",
       "description": "Water level, in centimetres"
      },
      "vs_mean_low_high": {
       "type": [
        "string",
        "null"
       ],
       "description": "Vs mean low high"
      },
      "vs_navigation_limits": {
       "type": [
        "string",
        "null"
       ],
       "description": "Vs navigation limits"
      },
      "gauge_zero_m_above_sea_level": {
       "type": [
        "number",
        "null"
  
… (truncated)
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/saylor-innovations-german-river-water-level-b5e3aa4d/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)