{"uid":"cap_VrsC4J6Q5PJ0FQ4lBKmIF","slug":"fastapi-online-antonym-suggest-9105ff44","name":"fastapi.online Antonym Suggest","description":"Chat, embeddings, OCR, speech-to-text, image editing, image understanding (captioning/Q&A), text-to-speech, translation, writing tools, classification tools, developer tools, local utilities, format/checksum validators, encoding & crypto utilities, date/time calculators, geo/coordinate math, math & finance calculators, novelty tools, and business/social writing generators — 179 endpoints in all, across multiple specialized self-hosted models. Pay per call with crypto — no signup — or get an API key.","url":"https://api.fastapi.online/antonym-suggest","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"word":{"type":"string","maxLength":100,"minLength":1},"count":{"type":"integer","maximum":20,"minimum":1}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.0005","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":"$0.0005/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.0005","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.0005","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_pPekNkBf6UHG6jnwIhHFT","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.0005","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns a list of antonyms for a given word, up to a specified count","exampleAgentPrompt":"Can you suggest 5 antonyms for the word 'generous'?","exampleUseCases":[{"title":"Vocabulary enrichment for writing","prompt":"I'm writing an essay and need some variety — can you give me 8 antonyms for the word 'bold' so I can pick the best fit?"},{"title":"Language learning flashcard generation","prompt":"I'm building antonym flashcards for English learners — give me 10 antonyms for the word 'happy'."},{"title":"Crossword puzzle clue solver","prompt":"I'm stuck on a crossword clue asking for an opposite of 'ancient' — can you suggest 3 antonym options?"}],"resultDescription":"A list of antonym words (up to the requested count) for the input word, returned as structured data suitable for display or further processing in a writing or vocabulary application.","failureModes":["Word not found or no antonyms available in the model's vocabulary — may return empty list or error","Invalid input: word exceeds 100 characters or count exceeds 20 — returns validation error","Network or service unavailability — returns 5xx error","Payment not processed or insufficient funds — returns 402 Payment Required"],"whenToPreferThis":"Choose this endpoint when you need a lightweight, pay-per-call antonym lookup without requiring an account or subscription. Ideal for agents building vocabulary tools, writing assistants, or language learning apps that need quick opposite-word suggestions at very low cost ($0.0005 per call). Prefer alternatives if you need rich context, example sentences, or part-of-speech filtering alongside antonyms.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T18:43:14.067Z","isFirstParty":false}