{"uid":"cap_-m6lmZ_sUN_e8Q6fTwCHh","slug":"halowerk-negative-price-probability-predictor-892455a3","name":"Halowerk Negative Price Probability Predictor","description":"","url":"https://energy.halowerk.com/predict/negative-price","method":"POST","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method","bodyType","body"],"properties":{"body":{"type":"object","properties":{"policy_profile":{"enum":["balanced","utility","precision","recall"],"type":"string","default":"balanced","description":"Selects the reviewed probability threshold profile without changing the underlying calibrated probabilities."}},"additionalProperties":false},"type":{"type":"string","const":"http"},"method":{"enum":["POST","PUT","PATCH"],"type":"string"},"bodyType":{"enum":["json","form-data","text"],"type":"string"}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","required":["ok","endpoint","result"],"properties":{"ok":{"type":"boolean"},"result":{"type":"object","required":["schema_version","expires_at","prediction","horizons","decision_engine"],"properties":{"horizons":{"type":"array","items":{"type":"object"}},"expires_at":{"type":["string","null"]},"prediction":{"type":"object"},"schema_version":{"type":"string"},"decision_engine":{"type":"object"}},"additionalProperties":true},"endpoint":{"type":"string"}},"additionalProperties":true}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.001","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"registry","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.001/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_yiihYtH3NlMc2D1u7lYBe","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.001","costPer":"request","priority":0,"asset":null,"unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns calibrated 2h/4h/6h negative electricity price probabilities with threshold profiles and an executable response policy for battery, EV, and trading agents.","exampleAgentPrompt":"What's the probability that German electricity prices go negative in the next 2, 4, and 6 hours, and should my battery storage system discharge now or wait? Use the balanced policy profile.","exampleUseCases":[{"title":"Battery dispatch during negative price window","prompt":"What's the likelihood of negative electricity prices in the next 2 and 4 hours? I want to know if my grid-connected battery should stop charging right now — use the precision policy profile so I only act on high-confidence signals."},{"title":"EV smart charging pause decision","prompt":"Check whether German power prices are likely to go negative in the next 6 hours and give me an action policy — I want my EV fleet charging software to automatically pause sessions if the probability is high enough. Use the recall policy profile."},{"title":"Energy trading agent risk assessment","prompt":"I need calibrated negative-price probabilities across the 2h, 4h, and 6h horizons for the German electricity market right now, with a utility policy profile, so my trading bot can hedge exposure before the evening peak."}],"resultDescription":"Returns a JSON object with a schema version, expiry timestamp, calibrated negative-price probabilities for 2h, 4h, and 6h horizons, a reviewed threshold profile matched to the chosen policy_profile, and a decision_engine object containing an executable response policy indicating recommended actions.","failureModes":["Invalid policy_profile enum value returns 422 validation error","Missing or malformed request body returns 400 bad request","Expired or unpaid x402 payment header causes 402 payment required response","Upstream ENTSO-E or SMARD data unavailability may cause 503 or stale expiry_at","High load or backend model timeout returns 504 gateway timeout"],"whenToPreferThis":"Choose this endpoint when an agent needs actionable, calibrated probability estimates for negative electricity prices across multiple near-term horizons (2h/4h/6h) rather than raw spot prices or historical data. Ideal for battery storage controllers, EV charging schedulers, and power-trading bots that require a reviewed threshold policy and an executable response recommendation rather than just a price figure. Prefer this over sibling endpoints that return raw EPEX spot prices or event feeds when probabilistic risk quantification and automated decision support are the goal.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T06:30:32.106Z","isFirstParty":false}