{"uid":"cap_70yU0wifduQ0xYZLh5OMa","slug":"halowerk-price-target-crossing-monitor-d454bb60","name":"HALOWERK Price Target Crossing Monitor","description":"HALOWERK handelswerk — bezahlte Endpunkte nach x402. Preise in USDC auf Base Mainnet.","url":"https://handel.halowerk.com/v1/price/articles/target-crossing?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"url":{"type":"string","maxLength":2048},"previous":{"type":"object","required":["value","currency"],"properties":{"value":{"type":"number","maximum":1000000000,"minimum":0},"currency":{"type":"string","pattern":"^[A-Z]{3}$"}},"additionalProperties":false},"callback_url":{"type":"string","maxLength":2048},"target_price":{"type":"number","maximum":1000000000,"minimum":0},"idempotency_key":{"type":"string","pattern":"^[A-Za-z0-9_-]+$","maxLength":128,"minLength":32}}},"responseSchema":{"type":"json"},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.007","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","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":"$0.007/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.007","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.007","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_44XtWPFTGZxZQry50NGf9","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.007","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Monitors a product or asset URL and triggers a callback when its price crosses a specified target threshold, compared to a previous price value.","exampleAgentPrompt":"Watch this product page https://example.com/product/123 for me — the price was last $49.99 USD, and I want to be notified at https://myapp.com/webhook when it drops below $39.99, here's my idempotency key: abc123def456ghi789jkl012mno345pq.","exampleUseCases":[{"title":"E-commerce deal alert webhook","prompt":"Set up a price watch on https://shop.example.com/item/headphones — the current price is $199.00 USD and I want my webhook at https://myserver.com/alerts triggered the moment it crosses below $149.00. Use idempotency key headphones-watch-20240601-xk9qrst2uvwxyz01."},{"title":"Crypto or asset floor crossing","prompt":"Monitor this asset listing at https://market.example.com/asset/ETH for me — it was previously at $3500.00 USD and I need a callback to https://myapp.com/price-hook when it crosses below $3000.00. My idempotency key is eth-floor-alert-abcdef1234567890abcd1234."},{"title":"Competitor pricing threshold trigger","prompt":"Keep an eye on this competitor product URL https://rival.com/products/widget — previous price was $25.00 USD — and ping my endpoint https://internal.myco.com/repricing-hook when it drops under $18.00 so I can reprice automatically. Idempotency key: competitor-widget-repricing-xyz9876543210abcde."}],"resultDescription":"A JSON response indicating whether the price at the given URL has crossed the specified target threshold relative to the previous price, along with relevant price data and crossing status details. If a callback URL was provided, the service also posts a notification to that endpoint upon crossing detection.","failureModes":["Invalid or unreachable product URL returns an error","Currency code not in valid ISO 4217 three-letter format causes validation failure","Idempotency key too short (under 32 chars) or containing invalid characters is rejected","Target price or previous price out of allowed range (0–1,000,000,000) causes schema rejection","Callback URL unreachable results in failed notification delivery","Payment failure or insufficient USDC balance blocks the request via x402 protocol"],"whenToPreferThis":"Choose this endpoint when you need automated detection of a price crossing a specific threshold for a URL-addressable product or asset, especially when you want a webhook callback to trigger downstream workflows. It is ideal for e-commerce deal monitoring, competitor pricing surveillance, or automated repricing pipelines where idempotent, event-driven price alerts are needed. Prefer this over polling solutions when you want a single, paid, reliable trigger per crossing event.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-22T00:42:28.523Z","isFirstParty":false,"canonicalSlug":"halowerk-price-target-crossing-monitor-d454bb60"}