{"uid":"cap_JI_wQaG8X-FfgPCuYHyne","slug":"datavault-grammar-checker-d261d6f7","name":"DataVault Grammar Checker","description":"54 endpoints spanning local tools, live data feeds, and AI-powered text processing. Pay-per-call with USDC on Base.","url":"https://zetavault.vercel.app/api/grammar","method":"POST","headers":{},"bodySchema":{"type":"object","required":["text"],"properties":{"text":{"type":"string"}}},"responseSchema":{"type":"object","properties":{"data":{"type":"object"},"success":{"type":"boolean"}}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.03","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"settled","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":"$0.03/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.03","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.03","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_9mgNwcc7MP_ZPVBdArnXI","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.03","costPer":"request","priority":0,"asset":null,"unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Checks and corrects grammar in a given text using AI-powered text processing","exampleAgentPrompt":"Can you check the grammar in this paragraph and let me know what needs fixing: 'She go to the store yesterday and buyed some apple, its very fresh.'","exampleUseCases":null,"resultDescription":"Returns a JSON object with a success boolean and a data object containing grammar analysis results, likely including identified errors, corrections, and/or a corrected version of the input text.","failureModes":["Missing required 'text' field returns validation error","Empty string input may return empty or error response","Extremely long text may time out or be truncated","Payment failure (402) if USDC not provided or insufficient","Service unavailable if zetavault.vercel.app is down"],"whenToPreferThis":"Choose this endpoint when you need a pay-per-call, no-subscription grammar check over USDC on Base, especially within an agentic workflow that already handles x402 payments. Suitable for lightweight, single-text grammar validation without requiring a full NLP platform integration.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T00:33:48.299Z","isFirstParty":false}