{"uid":"cap_b7_ELbABuSbv6ceDoAqyX","slug":"writegrade-text-scoring-api-0e50a1fc","name":"WriteGrade Text Scoring API","description":"Paid x402 diagnostics. Unpaid paid-SKU requests return HTTP 402 with eip3009 extras. Facilitator: OpenX402 only.","url":"https://openclawproductions.com/api/v1/writegrade?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET","HEAD","DELETE"],"type":"string"},"queryParams":{"type":"object","properties":{"text":{"type":"string","description":"Draft to score. Required. Max 4000 characters."}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}},"inputSchema":{"type":"object","required":["type","properties"],"properties":{"type":{"type":"string","const":"object"},"required":{"type":"array","items":{"type":"string"}},"properties":{"type":"object"}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.005","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":"$0.005/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_aDm1bpqeJPLCcHw1LVnOI","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Scores and grades a draft text passage, returning quality metrics for the submitted writing sample.","exampleAgentPrompt":"Can you grade this draft for me and tell me how good the writing is? Here's the text: 'The quick brown fox jumps over the lazy dog. This sentence exemplifies clarity and brevity in modern prose.'","exampleUseCases":[{"title":"Essay quality check before submission","prompt":"I just finished writing this essay paragraph — can you score it for quality before I submit it? Here it is: 'Climate change represents one of the most pressing challenges of our era, demanding immediate and coordinated global action across all sectors of society.'"},{"title":"Blog post draft review","prompt":"Can you grade my blog post intro and tell me how well it reads? The text is: 'Starting a business is never easy. But with the right mindset, tools, and community, even the smallest idea can grow into something extraordinary.'"},{"title":"Marketing copy evaluation","prompt":"I want a writing quality score on this product description draft: 'Discover the future of wireless audio with our premium noise-cancelling headphones — engineered for those who demand more from their listening experience.'"}],"resultDescription":"Returns a writing quality grade or score for the submitted text, including diagnostic metrics such as readability, clarity, or other quality indicators relevant to the draft passage.","failureModes":["Missing 'text' query parameter returns an error or empty result","Text exceeding 4000 characters may be rejected or truncated","Unpaid requests (no valid x402 payment) return HTTP 402 with EIP-3009 payment details","Non-GET/HEAD/DELETE methods return method-not-allowed errors","Empty string input may return a default or error response"],"whenToPreferThis":"Choose this endpoint when you need a quick, low-cost ($0.005 USDC) programmatic writing quality score for a text draft up to 4000 characters. It is particularly suited for AI agents that need to evaluate or filter writing quality in automated pipelines and can handle x402 micropayment flows via the OpenX402 facilitator.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-31T18:34:20.772Z","isFirstParty":false,"canonicalSlug":"writegrade-text-scoring-api-0e50a1fc"}