{"uid":"cap_z5Le1H5ewGlCEJZaTZhE0","slug":"tempest-proofread-ai-grammar-spelling-checker-5e575e49","name":"Tempest Proofread — AI Grammar & Spelling Checker","description":"Compose, rewrite, translate, and refine content at scale. 25 AI-powered endpoints. Pay-per-call with USDC on Tempo.","url":"https://tumpest.vercel.app/api/proofread","method":"POST","headers":{},"bodySchema":{"type":"object","required":["text"],"properties":{"text":{"type":"string","description":"Text to proofread"}}},"responseSchema":{"type":"object","properties":{"data":{"type":"object"},"success":{"type":"boolean"}}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.15","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":"$0.15/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.15","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.15","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_rbNaeJ5HaSYwm-O57R9Zx","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.15","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Proofreads submitted text using AI, identifying and correcting grammar, spelling, punctuation, and style errors","exampleAgentPrompt":"Can you proofread this paragraph and fix any grammar, spelling, or punctuation mistakes: 'Their going to the store tommorrow to by some grocerys for the party, its going to be alot of fun.'","exampleUseCases":null,"resultDescription":"Returns a JSON object with a success boolean and a data object containing the proofread/corrected version of the input text, along with any identified errors or suggestions","failureModes":["Missing required 'text' field returns a 400 validation error","Empty string input may return an error or trivial result","Very long text inputs may hit token or payload limits","Payment failure (insufficient USDC) returns 402 Payment Required","Service unavailability returns 500 error"],"whenToPreferThis":"Choose this endpoint when you need quick, pay-per-call AI-powered proofreading without a subscription. Ideal for agents that need to validate or polish text on demand at $0.15 USDC per call. Prefer over manual grammar APIs when contextual, AI-quality correction is needed rather than rule-based checking.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T12:38:34.017Z","isFirstParty":false}