{"schemaVersion":1,"name":"Machine Observer x402 Price Index","generatedAt":"2026-10-21T11:55:54.779Z","status":"ok","methodology":"Each endpoint is requested once without a payment header. A 402 response states the price the seller requires, which is read directly from the challenge. Machine Observer never sends a payment while indexing, and prices are converted to USD only for assets whose decimals it knows.","limitations":"Advertised prices, not transacted ones. An endpoint may price differently per request parameter, and a seller absent from the seed list is absent from the index.","summary":{"endpointsProbed":26,"endpointsPriced":21,"endpointsNotPayable":2,"endpointsRejectedBeforeQuoting":1,"endpointsUnreachable":0,"endpointsUnparseable":2,"protocolVersionsObserved":{"v2":20,"v1":1},"minPriceUsd":0.001,"medianPriceUsd":0.003,"maxPriceUsd":0.02},"query":{"service":null,"includeUnpriced":false},"count":21,"endpoints":[{"url":"https://machineobserver.com/api/x402/answer?intent=which+payment+rail+should+an+agent+use","service":"machine-observer","observedAt":"2026-10-21T11:55:50.586Z","status":"priced","httpStatus":402,"x402Version":2,"serviceName":"Machine Observer","resourceDescription":"One-call Machine Observer answer with evidence for $0.001 USDC. Returns a prioritized recommendation, confidence, observed evidence, evidence class, and next action for the requested agent task.","offers":[{"scheme":"exact","network":"eip155:8453","asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","assetSymbol":"USDC","amountAtomic":"1000","priceUsd":0.001,"priceBasis":"Atomic amount converted using 6 decimals for a USD-pegged asset.","maxTimeoutSeconds":300}],"lowestPriceUsd":0.001},{"url":"https://machineobserver.com/api/x402/history?days=30","service":"machine-observer","observedAt":"2026-10-21T11:55:50.925Z","status":"priced","httpStatus":402,"x402Version":2,"serviceName":"Machine Observer","resourceDescription":"Machine Observer premium historical snapshots across machine commerce, trust, likeness, API/data, compute, model/tool supply, and developer-adoption signals.","offers":[{"scheme":"exact","network":"eip155:8453","asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","assetSymbol":"USDC","amountAtomic":"1000","priceUsd":0.001,"priceBasis":"Atomic amount converted using 6 decimals for a USD-pegged asset.","maxTimeoutSeconds":300}],"lowestPriceUsd":0.001},{"url":"https://machineobserver.com/api/x402/preflight?url=https%3A%2F%2Fmilliapi.com%2Fapi%2Faudit-and-fix%3Furl%3Dhttps%253A%252F%252Fexample.com","service":"machine-observer","observedAt":"2026-10-21T11:55:49.293Z","status":"priced","httpStatus":402,"x402Version":2,"serviceName":"Machine Observer","resourceDescription":"Preflight a known x402 endpoint before spending: verify the live payment challenge, current ask, protocol/network, freshness versus Machine Observer observations, and a cheaper verified alternative when available.","offers":[{"scheme":"exact","network":"eip155:8453","asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","assetSymbol":"USDC","amountAtomic":"1000","priceUsd":0.001,"priceBasis":"Atomic amount converted using 6 decimals for a USD-pegged asset.","maxTimeoutSeconds":300}],"lowestPriceUsd":0.001},{"url":"https://milliapi.com/api/ai-robots-check?url=https%3A%2F%2Fmachineobserver.com","service":"milliapi","observedAt":"2026-10-21T11:55:52.417Z","status":"priced","httpStatus":402,"x402Version":2,"serviceName":"MilliAPI","resourceDescription":"Check robots.txt homepage permissions for major AI crawlers including GPTBot, OAI-SearchBot, ClaudeBot, Google-Extended, PerplexityBot and Applebot-Extended.","offers":[{"scheme":"exact","network":"eip155:8453","asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","assetSymbol":"USDC","amountAtomic":"1000","priceUsd":0.001,"priceBasis":"Atomic amount converted using 6 decimals for a USD-pegged 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USD-pegged asset.","maxTimeoutSeconds":300}],"lowestPriceUsd":0.002},{"url":"https://milliapi.com/api/page-metadata?url=https%3A%2F%2Fexample.com","service":"milliapi","observedAt":"2026-10-21T11:55:52.774Z","status":"priced","httpStatus":402,"x402Version":2,"serviceName":"MilliAPI","resourceDescription":"Extract title, description, canonical URL, robots meta, Open Graph, H1 count and JSON-LD count from a public HTTPS page.","offers":[{"scheme":"exact","network":"eip155:8453","asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","assetSymbol":"USDC","amountAtomic":"2000","priceUsd":0.002,"priceBasis":"Atomic amount converted using 6 decimals for a USD-pegged asset.","maxTimeoutSeconds":300}],"lowestPriceUsd":0.002},{"url":"https://machineobserver.com/api/x402/decision?vertical=api-data-economy&task=conversion","service":"machine-observer","observedAt":"2026-10-21T11:55:50.678Z","status":"priced","httpStatus":402,"x402Version":2,"serviceName":"Machine 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Returns prioritized current practices, confidence, observed evidence and cross-domain candidates so the buyer can choose the next action without reconstructing the evidence itself.","offers":[{"scheme":"exact","network":"eip155:8453","asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","assetSymbol":"USDC","amountAtomic":"3000","priceUsd":0.003,"priceBasis":"Atomic amount converted using 6 decimals for a USD-pegged asset.","maxTimeoutSeconds":300}],"lowestPriceUsd":0.003},{"url":"https://machineobserver.com/api/x402/transfer?from=api-data-economy&to=machine-commerce","service":"machine-observer","observedAt":"2026-10-21T11:55:51.323Z","status":"priced","httpStatus":402,"x402Version":2,"serviceName":"Machine Observer","resourceDescription":"Evaluate whether empirically supported x402 practices from one market may transfer to another. Returns hypotheses with structural similarity, confidence and validation requirements.","offers":[{"scheme":"exact","network":"eip155:8453","asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","assetSymbol":"USDC","amountAtomic":"3000","priceUsd":0.003,"priceBasis":"Atomic amount converted using 6 decimals for a USD-pegged asset.","maxTimeoutSeconds":300}],"lowestPriceUsd":0.003},{"url":"https://milliapi.com/api/audit-and-fix?url=https%3A%2F%2Fexample.com","service":"milliapi","observedAt":"2026-10-21T11:55:51.676Z","status":"priced","httpStatus":402,"x402Version":2,"serviceName":"MilliAPI","resourceDescription":"Live preflight found 7 actionable AI/agent-readiness issues on https://example.com/. Pay $0.003 USDC to receive the full audit, evidence, prioritized fixes, ready-to-apply repair artifacts, and a portable baseline in one call.","offers":[{"scheme":"exact","network":"eip155:8453","asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","assetSymbol":"USDC","amountAtomic":"3000","priceUsd":0.003,"priceBasis":"Atomic amount converted using 6 decimals for a USD-pegged asset.","maxTimeoutSeconds":300}],"lowestPriceUsd":0.003},{"url":"https://x402.openwebninja.com/realtime-zillow-data/search","service":"openwebninja-real-estate","observedAt":"2026-10-21T11:55:51.369Z","status":"priced","httpStatus":402,"x402Version":1,"serviceName":null,"resourceDescription":null,"offers":[{"scheme":"exact","network":"base","asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","assetSymbol":"USDC","amountAtomic":"3000","priceUsd":0.003,"priceBasis":"Atomic amount converted using 6 decimals for a USD-pegged asset.","maxTimeoutSeconds":300},{"scheme":"exact","network":"polygon","asset":"0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359","assetSymbol":null,"amountAtomic":"3000","priceUsd":null,"priceBasis":"Asset decimals are not known to Machine Observer, so no USD price is asserted.","maxTimeoutSeconds":300}],"lowestPriceUsd":0.003},{"url":"https://machineobserver.com/api/x402/meta-analysis","service":"machine-observer","observedAt":"2026-10-21T11:55:51.366Z","status":"priced","httpStatus":402,"x402Version":2,"serviceName":"Machine Observer","resourceDescription":"Cross-market x402 meta-analysis that identifies practices supported across multiple machine-economy verticals while preserving evidence and confidence distinctions.","offers":[{"scheme":"exact","network":"eip155:8453","asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","assetSymbol":"USDC","amountAtomic":"5000","priceUsd":0.005,"priceBasis":"Atomic amount converted using 6 decimals for a USD-pegged asset.","maxTimeoutSeconds":300}],"lowestPriceUsd":0.005},{"url":"https://machineobserver.com/api/x402/scenario-impact/3?event=AI%20compute%20demand%20rises&driver=gpu_h100_price&driverShockPct=10&variables=gpu_h100_price,inference_input_price,x402_transaction_velocity&horizonDays=30&probability=0.5","service":"machine-observer","observedAt":"2026-10-21T11:55:49.814Z","status":"priced","httpStatus":402,"x402Version":2,"serviceName":"Machine Observer","resourceDescription":"Machine Economy Scenario Oracle impact analysis for up to 3 requested variable(s), combining event probability with evidence-gated historical machine-economy sensitivities.","offers":[{"scheme":"exact","network":"eip155:8453","asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","assetSymbol":"USDC","amountAtomic":"5000","priceUsd":0.005,"priceBasis":"Atomic amount converted using 6 decimals for a USD-pegged asset.","maxTimeoutSeconds":300}],"lowestPriceUsd":0.005},{"url":"https://milliapi.com/api/agent-web-audit?url=https%3A%2F%2Fexample.com","service":"milliapi","observedAt":"2026-10-21T11:55:52.035Z","status":"priced","httpStatus":402,"x402Version":2,"serviceName":"MilliAPI","resourceDescription":"Decision-ready AI web audit in one paid call. Returns a readiness verdict, blocking issues, evidence, ready-to-apply or review-required repair artifacts, prioritized fixes, 0-100 score, crawler policy, robots.txt and llms.txt status, canonical/indexability, Open Graph, JSON-LD, headings, major AI-crawler access, and a portable baseline for future change detection.","offers":[{"scheme":"exact","network":"eip155:8453","asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","assetSymbol":"USDC","amountAtomic":"5000","priceUsd":0.005,"priceBasis":"Atomic amount converted using 6 decimals for a USD-pegged asset.","maxTimeoutSeconds":300}],"lowestPriceUsd":0.005},{"url":"https://milliapi.com/api/repair-site?url=https%3A%2F%2Fexample.com","service":"milliapi","observedAt":"2026-10-21T11:55:51.901Z","status":"priced","httpStatus":402,"x402Version":2,"serviceName":"MilliAPI","resourceDescription":"Repair This Site: decision-ready AI web diagnosis plus exact repair artifacts. Returns prioritized issues, evidence, ready-to-apply or review-required fixes, crawler policy, robots.txt and llms.txt status, metadata findings, a portable baseline, and a verification handoff.","offers":[{"scheme":"exact","network":"eip155:8453","asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","assetSymbol":"USDC","amountAtomic":"5000","priceUsd":0.005,"priceBasis":"Atomic amount converted using 6 decimals for a USD-pegged asset.","maxTimeoutSeconds":300}],"lowestPriceUsd":0.005},{"url":"https://www.likenessindex.com/api/x402/find-licensed-match?q=voice","service":"likeness-index","observedAt":"2026-10-21T11:55:53.069Z","status":"priced","httpStatus":402,"x402Version":2,"serviceName":"Likeness Index","resourceDescription":"Live search found 2901 licensing matches across 4 marketplaces. Pay $0.005 USDC to receive up to 5 ranked identities, attributed offers, source URLs, pricing/rights metadata, and a compact dossier for the top match.","offers":[{"scheme":"exact","network":"eip155:8453","asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","assetSymbol":"USDC","amountAtomic":"5000","priceUsd":0.005,"priceBasis":"Atomic amount converted using 6 decimals for a USD-pegged asset.","maxTimeoutSeconds":300}],"lowestPriceUsd":0.005},{"url":"https://machineobserver.com/api/x402/scenario-impact/10?event=AI%20compute%20demand%20rises&driver=gpu_h100_price&driverShockPct=10&variables=gpu_h100_price,inference_input_price,x402_transaction_velocity,x402_ask&horizonDays=30&probability=0.5","service":"machine-observer","observedAt":"2026-10-21T11:55:50.020Z","status":"priced","httpStatus":402,"x402Version":2,"serviceName":"Machine Observer","resourceDescription":"Machine Economy Scenario Oracle impact analysis for up to 10 requested variable(s), combining event probability with evidence-gated historical machine-economy sensitivities.","offers":[{"scheme":"exact","network":"eip155:8453","asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","assetSymbol":"USDC","amountAtomic":"10000","priceUsd":0.01,"priceBasis":"Atomic amount converted using 6 decimals for a USD-pegged asset.","maxTimeoutSeconds":300}],"lowestPriceUsd":0.01},{"url":"https://machineobserver.com/api/x402/scenario-impact/full?event=AI%20compute%20demand%20rises&driver=gpu_h100_price&driverShockPct=10&variables=all&horizonDays=30&probability=0.5","service":"machine-observer","observedAt":"2026-10-21T11:55:50.131Z","status":"priced","httpStatus":402,"x402Version":2,"serviceName":"Machine Observer","resourceDescription":"Full Machine Economy Scenario Oracle analysis: event probability, impacts across every supported machine-economy variable, and the evidence-gated relationship matrix.","offers":[{"scheme":"exact","network":"eip155:8453","asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","assetSymbol":"USDC","amountAtomic":"20000","priceUsd":0.02,"priceBasis":"Atomic amount converted using 6 decimals for a USD-pegged asset.","maxTimeoutSeconds":300}],"lowestPriceUsd":0.02},{"url":"https://www.likenessindex.com/api/x402/search?q=voice","service":"likeness-index","observedAt":"2026-10-21T11:55:53.209Z","status":"priced","httpStatus":402,"x402Version":2,"serviceName":"Likeness Index","resourceDescription":"Search LikenessIndex for authorized AI likeness and voice licensing offers, ranked across indexed marketplaces.","offers":[{"scheme":"exact","network":"eip155:8453","asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","assetSymbol":"USDC","amountAtomic":"20000","priceUsd":0.02,"priceBasis":"Atomic amount converted using 6 decimals for a USD-pegged asset.","maxTimeoutSeconds":300}],"lowestPriceUsd":0.02}],"editorialSeparation":"Prices are read from public payment challenges. No advertiser or seller can alter a price recorded here, and Machine Observer indexes its own endpoints on the same terms as everyone else.","links":{"history":"/api/v1/history/observations?metric=x402.price","practices":"/api/v1/practices","human":"/indexes"}}