{"uid":"cap_a8sNi8yTN83ng7yDEklZN","slug":"signalharness-market-vwap-calculator-01c64c36","name":"SignalHarness Market VWAP Calculator","description":"Explore 330 pay-per-call x402 API services and 27 agent-native digital products, with Base USDC pricing, secure Polar checkout, and free discovery.","url":"https://signalharness.ai/api/agent/services/market_vwap/invoke","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"vwap_request":{"type":"string","maxLength":65536,"minLength":2}}},"responseSchema":{"type":"json","example":{"replay":false,"result":{"warnings":["VWAP reflects only supplied data and volume."],"service_id":"market_vwap","evidence_scope":"caller_supplied_data","vwap_calculation":"{\"observation_count\":2,\"total_volume\":\"3\",\"vwap\":\"10.666666666666666666\"}"},"status":"succeeded","receipt":{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","usage":[],"status":"succeeded","network":"eip155:8453","artifacts":[],"endedAtMs":0,"latencyMs":0,"paymentId":"example-payment","receiptId":"example-receipt","requestId":"example-request","serviceId":"market_vwap","executionId":"example-execution","startedAtMs":0,"amountAtomic":"5000","resultSha256":"6c9c86694a7b1b408445297678836ffae355c9a4c5ddb9b0894777409bfa08f4","serviceVersion":"1.0.0","settlementReference":"0x0000000000000000000000000000000000000000000000000000000000000000"},"artifacts":[],"requestId":"example-request","executionId":"example-execution"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.005","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":"$0.005/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_z97P8KMOHcOb9IEISyKEe","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Computes the Volume-Weighted Average Price (VWAP) for a specified market instrument based on caller-supplied data","exampleAgentPrompt":"Calculate the VWAP for BTC/USD using my supplied trade data: a series of price-volume pairs from today's session — I need the volume-weighted average price and any warnings about data quality.","exampleUseCases":[{"title":"Intraday VWAP benchmark for equities","prompt":"I've got a list of AAPL trades from today with prices and volumes — can you calculate the VWAP so I can see how our execution compared to the market benchmark?"},{"title":"Crypto DeFi fair-value check","prompt":"Using the ETH/USDC trade data I'm providing, compute the VWAP for the last 4 hours so I can check if the current spot price is above or below fair value."},{"title":"Algorithmic order slippage analysis","prompt":"I need to evaluate slippage on my algo orders — calculate the VWAP from these filled trade records so I can compare it to my order entry prices."}],"resultDescription":"Returns a JSON object containing the computed VWAP calculation result, any data quality warnings, evidence scope label, service status, and a detailed receipt including payment ID, network, latency, and a SHA-256 hash of the result for verification.","failureModes":["Empty or malformed vwap_request string returns a validation error","Request string below 2 characters or above 65536 characters is rejected","Insufficient or inconsistent price-volume data may trigger warnings in the response","Payment failure via x402 protocol results in 402 response before execution","Malformed JSON in the request body causes a parse error"],"whenToPreferThis":"Choose this endpoint when you need a verifiable, on-chain-receipted VWAP computation with cryptographic proof of the result (SHA-256 hash), especially in agent workflows that require auditability. Prefer it over ad-hoc calculations when operating in crypto-native or DeFi contexts where payment via USDC on Base is natural and a tamper-evident receipt is valuable.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-13T13:07:04.470Z","isFirstParty":false}