{"uid":"cap_XHEi5eAYXstd6gJ2DxPBY","slug":"agentutility-book-cover-image-generator-1c03bd4e","name":"AgentUtility Book Cover Image Generator","description":"Paid x402 endpoints organized into product clusters. USDC-settled on Base. MCP-callable. ERC-8004 identity registry agentId 47167.","url":"https://x402.agentutility.ai/book-cover-image-generate","method":"POST","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method","bodyType","body"],"properties":{"body":{"required":["prompt"],"properties":{"seed":{"type":"number","description":"Random seed. Optional."},"tier":{"enum":["fast","creative","anime","sd35"],"type":"string","description":"Model shorthand. Default 'fast'."},"model":{"type":"string","description":"Override the model. Must be one of: z-image-turbo, chroma, wai-Illustrious, venice-sd35."},"steps":{"type":"number","description":"Diffusion steps. Optional; depends on model."},"width":{"type":"number","description":"Output width in pixels. Range [256, 1024], snapped to multiples of 16. Default 1024."},"height":{"type":"number","description":"Output height in pixels. Range [256, 1024], snapped to multiples of 16. Default 1024."},"prompt":{"type":"string","description":"Image description. Up to 2000 chars."},"cfg_scale":{"type":"number","description":"Classifier-free guidance scale. Optional."},"negative_prompt":{"type":"string","description":"Negative prompt. Optional, up to 1000 characters."}}},"type":{"type":"string","const":"http"},"method":{"enum":["POST"],"type":"string"},"bodyType":{"enum":["json","form-data","text"],"type":"string"}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","required":["image_url","model","width","height","source"],"properties":{"seed":{"type":["number","null"],"description":"Seed reported by the provider, when available."},"tier":{"enum":["fast","creative","anime","sd35"],"type":"string"},"model":{"type":"string","description":"Model that produced the image. Fallback responses name fal-ai/z-image/turbo."},"width":{"type":"number","description":"Final image width in pixels."},"height":{"type":"number","description":"Final image height in pixels."},"prompt":{"type":"string","description":"Original caller prompt."},"source":{"enum":["venice","fal-ai"],"type":"string","description":"Provider that produced the image."},"image_url":{"type":"string","description":"HTTPS URL for the generated PNG."},"elapsed_ms":{"type":"number","description":"Elapsed handler time in milliseconds."},"fallback_from":{"enum":["venice"],"type":"string","description":"Primary provider replaced by the fallback."},"fal_request_id":{"type":["string","null"],"description":"fal.ai request ID, present when available on fallback."},"fallback_reason":{"type":"string","description":"Bounded reason code that triggered the fallback."},"requested_model":{"type":"string","description":"Requested Venice model, present when fal.ai handled a fallback."},"venice_request_id":{"type":["string","null"],"description":"Venice request ID, or null for a fal.ai fallback."}}}}}}},"responseSchema":{"type":"json","example":{"model":"chroma","width":768,"height":1024,"source":"venice","image_url":"https://v3.fal.media/files/abc/xyz/image.png"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.011","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":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm__-wmj_aUpPT29fmikm0ki","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":null,"unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Generates a book cover image using the Chroma model via Venice, returning a 768×1024 PNG image URL for $0.01 USDC per call","exampleAgentPrompt":"Generate a book cover image for my dark fantasy novel called 'The Ashen Crown' — a brooding, atmospheric scene with a crumbling stone throne and misty mountains in the background, moody and cinematic style.","exampleUseCases":null,"resultDescription":"Returns a JSON object with the model used ('chroma'), image dimensions (768 wide × 1024 tall), the source provider ('venice'), and a direct image URL (hosted on fal.media) pointing to the generated book cover PNG.","failureModes":["Invalid or missing prompt leads to generation failure","Payment not settled via x402 returns 402 Payment Required","Venice/fal.media upstream outage causes 503 or timeout","Prompt violates content policy and is rejected","Malformed request body returns 400 Bad Request"],"whenToPreferThis":"Use this endpoint when you need a purpose-built book cover image generator optimized for portrait 768×1024 format using the Chroma model via Venice, payable per-call in USDC with no subscription required — ideal for self-publishing workflows, ebook cover generation, or any agent pipeline that needs professional-grade book cover art on demand.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T13:13:39.500Z","isFirstParty":false}