Discover / energy.halowerk.com

HALOWERK Energy

■ Challenge detected

Cheapest end-to-end x402 purchase test. Always returns a 402 challenge without payment and the current full NegPrice decision after a valid USDC payment.

Listed price
$0.001
Challenge detected
10 of the last 10 checks
Median response
621 ms
Last checked
16 Oct, 23:40 UTC
In our index since
26 Sept 2026

Endpoint

curl -i https://energy.halowerk.com/demo/paid-sample
# 402 Payment Required: pay with an x402 client (USDC on Base),
# then send the same request again with the payment attached.
5 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://energy.halowerk.com

  • POST/v3/market-brief$0.05Returns licensed ENTSO-E and SMARD spot-market context for compute, DePIN, battery and power-trading agents: published day-ahead prices, volatility, load, renewable share when available, the observed share of published negative-price hours, uncertainty, freshness and expiry.
  • POST/price/spot$0.001Trading and dispatch agents buy this endpoint to obtain the current German EPEX spot price for immediate decisions.
  • GET/demo/paid-sample$0.001Cheapest end-to-end x402 purchase test. Always returns a 402 challenge without payment and the current full NegPrice decision after a valid USDC payment.
  • POST/carbon/now$0.001Aktuelle CO2-Intensität des deutschen Strommix.
  • POST/predict/negative-price$0.001Battery, EV, and trading agents buy this endpoint to receive calibrated 2h/4h/6h negative-price probabilities, reviewed threshold profiles and an executable response policy.

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

Showing 5 of 5 listed endpoints.

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

Recent checks

26 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 10 checks
When (UTC)ResultHTTPResponse
16 Oct, 23:40 UTCChallenge detected402914ms
15 Oct, 19:10 UTCChallenge detected402499ms
14 Oct, 14:31 UTCChallenge detected402454ms
12 Oct, 10:53 UTCChallenge detected402531ms
10 Oct, 15:44 UTCChallenge detected402653ms
9 Oct, 12:40 UTCChallenge detected402595ms
8 Oct, 09:33 UTCChallenge detected402671ms
7 Oct, 09:33 UTCChallenge detected402578ms
6 Oct, 09:33 UTCChallenge detected402704ms
26 Sept, 17:02 UTCChallenge detected402646ms

Questions

Did our last probe detect a payment challenge?

At our last probe on 16 Oct, 23:40 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 HALOWERK Energy?

Its listed price is $0.001.

What payment terms does HALOWERK Energy 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 HALOWERK Energy listed?

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

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