{"uid":"cap_45xdNwKB3RUyleYpJ_VMV","slug":"owlkey-ai-writing-api-40abe51d","name":"OwlKey AI Writing API","description":"Low-cost AI writing API for agents. Generates launch copy, posts, summaries, hooks, and reusable text variants.","url":"https://www.owlkeyapi.com/x402/services/write","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"tone":{"type":"string","description":"Optional tone, such as clear, direct, premium, or playful."},"format":{"type":"string","description":"Optional output format, such as brief, post, summary, email, or ad."},"prompt":{"type":"string","maxLength":4000,"minLength":1,"description":"Writing task or source material."},"audience":{"type":"string","description":"Optional target audience."}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.003","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":"$0.003/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.003","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.003","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_wTV1d4oFAI2tkBcEnVI1d","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.003","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Generates AI-written copy including launch copy, social posts, summaries, hooks, and text variants from a prompt, tone, format, and audience specification.","exampleAgentPrompt":"Write me a playful social media post for my app launch targeting indie developers — keep it brief and punchy, like a Twitter announcement.","exampleUseCases":[{"title":"Product launch announcement post","prompt":"Write a short, punchy launch post for my new productivity app called FocusFlow — target busy professionals, use a direct tone, and keep it to a brief Twitter-style post."},{"title":"Email campaign copy for SaaS trial","prompt":"Draft a clear, persuasive email encouraging free-trial users of my project management tool to upgrade to paid — audience is startup founders, tone should be premium but friendly."},{"title":"Ad hook for e-commerce product","prompt":"Give me a playful, attention-grabbing ad hook for my handmade candle shop targeting gift shoppers — format it as a short ad headline with a one-sentence follow-up."}],"resultDescription":"Returns AI-generated text content matching the specified format, tone, and audience — such as a social post, summary, email body, ad copy, or hook — based on the provided writing prompt.","failureModes":["Prompt too short or missing (minLength:1 violation) returns validation error","Prompt exceeds 4000 characters returns a length validation error","Ambiguous or conflicting tone/format instructions may yield generic or mismatched output","Insufficient USDC balance causes payment failure via x402 protocol","Unsupported tone or format values may be silently ignored or default to neutral output"],"whenToPreferThis":"Choose this endpoint when an agent needs fast, low-cost AI-generated marketing or content copy — especially launch copy, social posts, summaries, hooks, or ad text — and wants control over tone, format, and audience without building a full LLM pipeline. At $0.003 per call it is cost-efficient for high-volume content generation tasks in agentic workflows.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T06:36:34.495Z","isFirstParty":false}