{"uid":"cap_rx3eiYsqeO6Xih6LNGYKj","slug":"onvexia-nlp-aspects-blockchain-asset-sentiment-topic-analysis-f0c9fedc","name":"Onvexia NLP Aspects — Blockchain Asset Sentiment & Topic Analysis","description":"Thousands of assets across ten chains, half a million analysed documents, labelled addresses and supply-age history reaching back to 2008 — fused into one reading per asset. REST, SQL, GraphQL and MCP.","url":"https://onvexia.com/v1/nlp/aspects/%7Basset%7D","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"properties":{"type":"string"}}},"responseSchema":{"type":"json","example":{"data":[],"meta":{"docs":"https://onvexia.com/openapi.json","endpoint":"/v1/nlp/aspects/{asset}"}}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.003","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":"$0.003/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.003","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.003","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_LjyKLEYP3I-0VEZWfqPKo","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.003","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns NLP-derived aspect-level sentiment and thematic signals for a specified crypto asset, synthesized from half a million analysed blockchain-related documents.","exampleAgentPrompt":"Pull the NLP aspect analysis for Ethereum from Onvexia — I want to see what topics and sentiment themes are showing up across their document corpus right now.","exampleUseCases":[{"title":"Crypto token narrative monitoring","prompt":"Give me the NLP aspect breakdown for Solana from Onvexia — what themes and sentiment signals are showing up across their analysed documents?"},{"title":"Pre-trade sentiment due diligence","prompt":"Before I add Chainlink to my portfolio, can you pull the aspect-level sentiment analysis for LINK from Onvexia so I can see what narratives are driving discussion?"},{"title":"Cross-asset sentiment comparison","prompt":"Get me the NLP aspect scores for both Bitcoin and Ethereum from Onvexia — I want to compare the dominant themes and sentiment patterns across both assets."}],"resultDescription":"A JSON array of aspect-level NLP signals for the requested asset, including identified themes, sentiment dimensions, and scores synthesized from Onvexia's corpus of analysed blockchain documents. Also includes a meta object pointing to the full OpenAPI spec.","failureModes":["Unknown or unsupported asset identifier returns an empty data array","Asset not covered across the ten supported chains returns no results","Malformed asset path parameter returns a 400-level error","Payment not processed (x402 flow incomplete) results in a 402 Payment Required response","Rate limiting or quota exceeded may produce 429 errors"],"whenToPreferThis":"Choose this endpoint when you need narrative-level, NLP-derived aspect sentiment for a specific crypto asset rather than raw price or on-chain metrics. It is particularly valuable when you want to understand thematic and sentiment patterns drawn from a large document corpus — not just social media or news headline counts. Prefer it over generic sentiment APIs when you need blockchain-native coverage with labelled addresses and multi-chain context baked in.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-19T13:11:07.491Z","isFirstParty":false}