{"uid":"cap_ZOVfH-jhSHqRVb1J3EZPw","slug":"x402-agent-economy-lab-sentiment-analysis-usdc-38395638","name":"x402 Agent Economy Lab – Sentiment Analysis (USDC)","description":"Machine-payable NLP micro-services: sentiment, entity extraction, summarization, report, batch. Paid per call in REAL USDC on Base mainnet.","url":"https://rqjzcd-ip-209-115-177-214.tunnelmole.net/v1/sentiment","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"text":{"type":"string"}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.001","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":"$0.001/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_pJOxsHyDUKjV_WwRtDOZ8","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.001","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Analyzes the sentiment of a given text string and returns a sentiment classification, paid per call in real USDC on Base mainnet via x402.","exampleAgentPrompt":"Can you analyze the sentiment of this customer review: 'The product arrived quickly but the packaging was damaged and support was unhelpful' — I need to know if it's positive, negative, or neutral.","exampleUseCases":[{"title":"Customer review sentiment triage","prompt":"Analyze the sentiment of this review for me: 'Absolutely loved the new update — it fixed all my issues and the UI is so much cleaner now.' Is it positive, negative, or neutral?"},{"title":"Social media brand monitoring","prompt":"Check the sentiment of this tweet about our product: 'Can't believe how slow the app has gotten since the last patch. Going back to the old version.' Is our brand sentiment trending negative here?"},{"title":"Support ticket prioritization","prompt":"I need to know the emotional tone of this support ticket before routing it: 'I have been waiting three weeks for a refund and nobody responds to my emails. This is absolutely unacceptable.' Is this highly negative?"}],"resultDescription":"Returns a sentiment classification (e.g. positive, negative, neutral) and likely a confidence score or polarity value for the submitted text. Payment of $0.001 USDC is settled on Base mainnet via x402 protocol before or alongside the response.","failureModes":["402 Payment Required if USDC wallet is not funded or x402 payment header is missing","Empty or missing 'text' field returns a validation error","Network timeout if the tunnelmole tunnel is down or unreachable","Malformed JSON body returns a 400 Bad Request","Insufficient USDC balance on Base mainnet blocks the request"],"whenToPreferThis":"Choose this endpoint when you need a lightweight, pay-per-call sentiment classification that settles in real USDC on Base mainnet — ideal for autonomous AI agents with crypto wallets that need to avoid subscription billing. Prefer this over subscription NLP APIs when you want zero upfront commitment and machine-to-machine micropayment flows via x402.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-13T18:30:45.034Z","isFirstParty":false}