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HALOWERK Energy

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.

Visit energy.halowerk.com

Host	energy.halowerk.com
Price	$0.001–$0.05 per call
Network	Base
Paid endpoints listed	5
Calls, last 30 days*	19
Most unique payers on one endpoint (30 days)*	6
Last paid call*	2026-10-18
Tags	compute-scheduling, depin-workloads, carbon-aware-compute, battery-dispatch, power-trading

* From the public x402 Bazaar index (snapshot 2026-10-18T04:07Z); reported by the facilitator, not measured by us.

Endpoints

URL	Method	Price
`https://energy.halowerk.com/demo/paid-sample` Cheapest end-to-end x402 purchase test. Always returns a 402 challenge without payment and the current full NegPrice…	GET	$0.001
`https://energy.halowerk.com/price/spot` Trading and dispatch agents buy this endpoint to obtain the current German EPEX spot price for immediate decisions.	POST	$0.001
`https://energy.halowerk.com/v3/market-brief` Returns licensed ENTSO-E and SMARD spot-market context for compute, DePIN, battery and power-trading agents: published…	POST	$0.05
`https://energy.halowerk.com/predict/negative-price` Battery, EV, and trading agents buy this endpoint to receive calibrated 2h/4h/6h negative-price probabilities,…	POST	$0.001
`https://energy.halowerk.com/carbon/now` Aktuelle CO2-Intensität des deutschen Strommix.	POST	$0.001

Source: x402 Bazaar discovery API (Coinbase CDP) · Licence: Public discovery metadata; descriptions by each provider. Listed in x402 pay-per-call APIs. We list tools; we do not test, rate or endorse them.

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