{"uid":"cap_-yZO8oPzKO3WcdqIdOeK_","slug":"vextorium-zero-shot-text-classifier-bf5e3983","name":"Vextorium Zero-Shot Text Classifier","description":"Zero-shot text classification with local AI: pick the best label (or several) from your own list, with confidence and reason.","url":"https://api.vextorium.com/clasificar-pago?utm_source=zero.xyz","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":{"required":["texto","etiquetas"],"properties":{"texto":{"type":"string","description":"Text to classify"},"multiple":{"type":"boolean","description":"Allow several labels (default false)"},"etiquetas":{"type":"array","items":{"type":"string"},"description":"2-30 candidate labels"}}},"type":{"type":"string","const":"http"},"method":{"enum":["POST"],"type":"string"},"bodyType":{"enum":["json","form-data","text"],"type":"string"}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","properties":{"modelo":{"type":["string","null"]},"motivo":{"type":["string","null"]},"confianza":{"type":["number","null"]},"etiquetas":{"type":["array","null"],"items":{"type":["string","null"]}}}}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.005","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":"down","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_4K_MDXlbL4dbJJm35hBzS","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":null,"unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Classifies text into user-supplied labels using local AI, returning the best label(s) with a confidence score and reason.","exampleAgentPrompt":"Classify this customer message — 'My order arrived broken and I want a refund' — into one of these labels: billing, shipping, product defect, general inquiry. Tell me which label fits best and how confident you are.","exampleUseCases":[{"title":"Support ticket routing by topic","prompt":"I have a support ticket that reads: 'The app crashes every time I try to upload a photo.' Classify it into one of these categories: bug report, feature request, account issue, billing question — and give me the confidence score and your reason."},{"title":"Spending category tagging for transactions","prompt":"Label this transaction description — 'AMZN Mktp US*AB12C food delivery' — as one of: groceries, dining, entertainment, travel, shopping, utilities. Pick multiple labels if more than one applies."},{"title":"Sentiment and intent classification for reviews","prompt":"Here's a product review: 'Battery life is amazing but the camera is disappointing for the price.' Classify it into one of these labels: positive, negative, mixed, neutral — and explain why you chose that label."}],"resultDescription":"Returns a JSON object with: selected label(s) as an array, a numerical confidence score (0-1), a human-readable reason explaining the choice, and the model name used for inference.","failureModes":["Fewer than 2 or more than 30 candidate labels provided — validation error","Empty or missing 'texto' field — required field error","Ambiguous text with very low confidence score returned (near 0.5)","Label list contains duplicates or very similar labels causing split confidence","Network timeout if input text is extremely long"],"whenToPreferThis":"Choose this endpoint when you need zero-shot classification against a fully custom, user-defined label set without training a model — especially useful when labels change per request, you need a confidence score and a human-readable reason, and you want a cost-effective ($0.005/call) local-AI solution rather than a heavyweight cloud NLP API.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-02T19:26:36.092Z","isFirstParty":false,"canonicalSlug":"vextorium-zero-shot-text-classifier-bf5e3983"}