{"uid":"cap_CgkWaaU29_u5fFs0rdR_R","slug":"gre-sat-vocabulary-practice-api-b0756657","name":"GRE/SAT Vocabulary Practice API","description":"GRE and SAT vocabulary practice API: draws from 150 curated high-difficulty words — perspicacious, recalcitrant, ephemeral tier — each with definition, usage example, synonyms, and an advanced/expert rating so study agents can ramp difficulty as learners progress.","url":"https://x402.forgemesh.io/gre-vocabulary","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"count":{"type":"string","description":"Words to return, 1-10 (default 1)"},"difficulty":{"type":"string","description":"Optional: advanced or expert"},"starts_with":{"type":"string","description":"Optional: single starting letter"}}},"responseSchema":{"type":"json","example":{"words":[{"word":"ephemeral","example":"The beauty of the cherry blossoms is ephemeral.","synonyms":["fleeting","transient","momentary"],"definition":"lasting for a very short time","difficulty":"advanced","part_of_speech":"adjective"}]}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.002","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":"$0.002/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_Uqqbo53A2qtUdE3YSBahU","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.002","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns curated high-difficulty GRE/SAT vocabulary words with definitions, usage examples, synonyms, and difficulty ratings for adaptive study sessions.","exampleAgentPrompt":"Give me 5 expert-difficulty GRE vocabulary words starting with 'P' — I need each one with a definition, a usage example, and synonyms so I can study.","exampleUseCases":null,"resultDescription":"Returns a list of 1–10 curated high-difficulty vocabulary words, each with its definition, a contextual usage example, synonyms, and an advanced/expert difficulty rating drawn from a pool of 150 GRE/SAT-tier words.","failureModes":["Invalid count value (outside 1–10 range) returns an error","Unknown difficulty value other than 'advanced' or 'expert' may return an error or be ignored","No words available matching the starts_with letter filter returns empty or reduced results","Micro-payment failure (x402 protocol) blocks access to the endpoint"],"whenToPreferThis":"Use this endpoint when building adaptive vocabulary study tools, GRE/SAT prep agents, or flashcard systems that need curated high-difficulty words with rich metadata (definitions, examples, synonyms, difficulty tiers). Prefer over generic dictionary APIs when you specifically want test-prep-caliber vocabulary with built-in difficulty progression support.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T01:02:58.026Z","isFirstParty":false}