Discover / natur.halowerk.com

natur.halowerk.com

■ Challenge detected

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.

x402
Base
USDC

Listed price: $0.004
Challenge detected: 9 of the last 9 checks
Median response: 328 ms
Last checked: 16 Oct, 13:59 UTC
In our index since: 26 Sept 2026

Endpoint

curl -i https://natur.halowerk.com/v1/river-gauge
# 402 Payment Required: pay with an x402 client (USDC on Base),
# then send the same request again with the payment attached.

6 listed endpoints · on x402 Bazaar

Checks and payment terms on this page refer to the endpoint above. Other listed endpoints have not been checked individually.

Base URLhttps://natur.halowerk.com/v1

POST/biodiversity-density$0.006Assesses the recorded biodiversity of an area around a point: how many distinct species appear, how many records support them, how recent those records are, how many separate datasets contributed, and the breakdown by kingdom. The trap this service is built around is that record density measures observers, not organisms — a city park with heavy footfall carries more records than a roadless reserve and is not thereby richer.
POST/climate-normals$0.005Returns the German Weather Service reference-period values for the station nearest a coordinate: monthly means and annual totals for air temperature, precipitation and sunshine duration, plus the mean annual counts of frost days, ice days, summer days and hot days.
POST/earthquake-brief$0.004Returns a single earthquake in decision-ready form, either by its USGS event identifier or as the most significant event matching a search. Magnitude is reported with the magnitude type, because moment magnitude and local magnitude are not interchangeable at the edges of their ranges.
POST/water-quality$0.005Retrieves water quality results for a monitoring site from the Water Quality Portal and normalises them into a comparable shape. The real work is units: the same measurement appears there as mg/L, ug/L, ppm and mg/l in mixed case, and combining them unchecked puts factor-of-thousand errors into any statistic built on top.
POST/noise-level$0.006Queries the Sensor.Community live area feed, keeps the newest noise reading per outdoor sensor within the requested radius, and returns nearest readings plus median, p10 and p90 LAeq. It never converts missing sensors into an estimated dB value. Community sensors are indicative rather than calibrated regulatory measurements; no day/night legal limit or property valuation is inferred.
POST/river-gauge$0.004Returns 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.

A dash means the listing gives no price or method. Copy buttons copy the full URL.

Showing 6 of 6 listed endpoints.

Agents can find it through the Superstables MCP server and JSON API: GET /api/v1/services/natur.halowerk.com

Recent checks

30 Sept 2026One bar per check, showing up to 20 recent checks. Coloured bars show relative response time, with a minimum visible height; full-height grey bars mean no challenge was detected. “Challenge detected” means HTTP 402 or another detected payment-challenge signal.16 Oct 2026

All 9 checks

When (UTC)	Result	HTTP	Response
16 Oct, 13:59 UTC	Challenge detected	402	325ms
15 Oct, 04:47 UTC	Challenge detected	402	368ms
13 Oct, 20:45 UTC	Challenge detected	402	303ms
11 Oct, 19:34 UTC	Challenge detected	402	460ms
10 Oct, 03:32 UTC	Challenge detected	402	327ms
9 Oct, 00:47 UTC	Challenge detected	402	328ms
7 Oct, 21:31 UTC	Challenge detected	402	465ms
6 Oct, 16:01 UTC	Challenge detected	402	313ms
30 Sept, 05:03 UTC	Challenge detected	402	332ms

Questions

Did our last probe detect a payment challenge?

At our last probe on 16 Oct, 13:59 UTC, it returned HTTP 402 or another detected payment-challenge signal. This check did not test payment, delivery or compatibility with the Superstables client.

What price is recorded for natur.halowerk.com?

Its listed price is $0.004.

What payment terms does natur.halowerk.com advertise?

The listing advertises x402, Base and USDC. It names cdp as its facilitator. Check the seller's current payment challenge and authentication requirements before paying.

Where is natur.halowerk.com listed?

In x402 Bazaar. Superstables first indexed it on 26 Sept 2026.

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