{"uid":"cap_F9-6SsETZvPIw8O5wi0gO","slug":"fastapi-online-generate-coloring-page-672f3e06","name":"fastapi.online — Generate Coloring Page","description":"Chat, embeddings, OCR, speech-to-text, image editing, image understanding (captioning/Q&A), text-to-speech, translation, writing tools, classification tools, developer tools, local utilities, format/checksum validators, encoding & crypto utilities, date/time calculators, geo/coordinate math, math & finance calculators, novelty tools, and business/social writing generators — 179 endpoints in all, across multiple specialized self-hosted models. Pay per call with crypto — no signup — or get an API key.","url":"https://api.fastapi.online/generate-coloring-page","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"seed":{"type":"integer"},"subject":{"type":"string","maxLength":300,"minLength":1,"description":"the coloring page subject"}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.012","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":"down","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.012/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.012","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.012","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_NCY_hWVkzTP-kTLGE5s2q","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.012","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Generates a black-and-white coloring page image from a text subject description using self-hosted AI inference","exampleAgentPrompt":"Can you generate a coloring page of a friendly dragon sitting on a mountain? Use seed 42 so I can reproduce it later.","exampleUseCases":[{"title":"Kids' birthday party coloring sheets","prompt":"Make a coloring page of a birthday cake with candles and balloons for my daughter's party — use seed 7 so I can print the same one again."},{"title":"Classroom educational activity","prompt":"Generate a coloring page of the solar system with all eight planets for a 3rd grade science class activity."},{"title":"Custom coloring book for a pet","prompt":"Create a coloring page of a golden retriever playing fetch in a park — use seed 123 so it's reproducible."}],"resultDescription":"An AI-generated black-and-white line art coloring page image based on the provided subject description. The seed parameter allows reproducible results when the same seed and subject are reused.","failureModes":["Subject too short or empty (minLength:1 enforced)","Subject exceeds 300 characters (maxLength enforced)","Invalid seed type (must be integer)","Service temporarily unavailable or model error returning 5xx","Payment failure or insufficient USDC balance via x402 protocol"],"whenToPreferThis":"Choose this endpoint when you need a quick, cheap ($0.012 USDC), no-signup coloring page image generated from a text description — especially useful for one-off or programmatic coloring book generation. Prefer it over general image generation APIs when you specifically want clean black-and-white line art suitable for printing and coloring.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T11:26:04.149Z","isFirstParty":false}