{"uid":"cap_hAKtVawjmJaoibfAAoXXs","slug":"omniapi-ai-similarity-50cf8095","name":"OmniAPI AI Similarity","description":"444 endpoints across 9+ chains. Crypto, AI, Social, Finance, Weather, Tools. Pay per call in USDC via x402 with 4 facilitators: Dexter, Meridian, FluxA, GoPlausible.","url":"https://omni-api-cyan.vercel.app/api/ai/similarity","method":"POST","headers":{},"bodySchema":{"type":"object","required":["query"],"properties":{"input":{"type":"string","description":"Input data for the endpoint"},"query":{"type":"string","description":"Search query or input text"},"params":{"type":"object","description":"Additional parameters"}}},"responseSchema":{"type":"object","description":"API response data"},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.087051","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":"$0.087051/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.087051","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.087051","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_ESp4AzUzx5vcQdg83r3uw","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.087051","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Computes semantic similarity between a query text and input data, returning a similarity score or ranked results","exampleAgentPrompt":"Can you check how semantically similar the text 'machine learning accelerates drug discovery' is to the query 'AI in pharmaceutical research' and give me a similarity score?","exampleUseCases":[{"title":"Semantic search relevance scoring","prompt":"I have a search query 'renewable energy storage solutions' and a document snippet about lithium batteries — can you score how relevant the document is to the query?"},{"title":"Duplicate content detection","prompt":"Check how similar these two product descriptions are to each other: 'lightweight waterproof hiking boots with grip sole' and 'trail running shoes with water resistance and traction' — are they essentially the same?"},{"title":"Candidate resume matching","prompt":"Score how closely this resume summary 'experienced Python developer with 5 years in data pipelines and cloud infrastructure' matches the job query 'senior data engineer with cloud and ETL experience'."}],"resultDescription":"Returns a similarity score or ranked relevance results comparing the query text against the provided input, likely including a numerical score (0-1) and possibly additional metadata about the match quality.","failureModes":["Missing required 'query' field returns validation error","Empty or very short query strings may produce unreliable scores","Payment failure via x402 results in 402 response before processing","Extremely long input texts may be truncated or rejected","Non-English or multilingual text may yield degraded similarity accuracy"],"whenToPreferThis":"Choose this endpoint when you need a pay-per-call, no-subscription semantic similarity computation that works within a crypto-native x402 payment flow. Best for agents already operating in the OmniAPI ecosystem or when you need lightweight on-demand similarity scoring without standing up a dedicated embedding service.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T00:43:34.767Z","isFirstParty":false}