{"uid":"cap_RXDUMpHh-RvveNXEPh83R","slug":"flat-rate-llm-image-describe-b31c7617","name":"Flat-Rate LLM Image Describe","description":"Describes what is in an image in about one second: pass an https URL or base64 and ask anything about it, from a one-line caption to reading a sign. Pairs with the rest of the chain: describe an image, translate the description, then have it read aloud. You are only charged if the description is delivered. No API key, no account.","url":"https://flat-rate-llm.kikoribera03.workers.dev/v1/ai/image-describe?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"],"type":"string"},"queryParams":{"type":"object","required":[],"properties":{"url":{"type":"string","description":"https URL of the image to describe. Use this or image."},"image":{"type":"string","description":"The image, as base64. Use this or url."},"prompt":{"type":"string","description":"What to ask about the image. Default: a one-sentence description."},"max_tokens":{"type":"number","description":"Length limit of the answer, 16-512. Default 128."}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"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":"1.00","reviews":0,"stars":null,"state":"rated"},"availabilityStatus":"healthy","priceObserved":{"p10Cents":"0.5000","medianCents":"0.5000","p90Cents":"0.5000","minCents":"0.5000","maxCents":"0.5000","p95Cents":"0.5000","sampleCount":4,"varies":false,"failureChargeRate":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_6nAZoql0DuKKR7LGpyVEu","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":"Describes the contents of an image in about one second given an HTTPS URL or base64-encoded image, with an optional custom prompt","exampleAgentPrompt":"Can you describe what's in this image for me? Here's the URL: https://upload.wikimedia.org/wikipedia/commons/thumb/4/47/PNG_transparency_demonstration_1.png/280px-PNG_transparency_demonstration_1.png — give me a one-sentence caption.","exampleUseCases":[{"title":"Caption product photos automatically","prompt":"I've got this product image at https://example.com/products/widget.jpg — can you describe exactly what's shown in it, including colors and any visible text on the packaging?"},{"title":"Read text from a photo of a sign","prompt":"Here's a photo of a sign I took at the conference — https://example.com/sign.jpg — can you read and transcribe whatever text is visible on it?"},{"title":"Answer a visual question about an image","prompt":"I have this chart image encoded in base64 — can you look at it and tell me what the highest data point is? Here's the base64 string: [base64data]"}],"resultDescription":"A natural-language text answer describing the image contents, answering the provided prompt, or producing a caption — length controlled by max_tokens (16–512 tokens, default 128). The response is the AI-generated description string, delivered only when successful (pay-per-delivery model at $0.005 USDC per call).","failureModes":["Invalid or unreachable image URL returns an error","Base64 string that is malformed or not a valid image format causes a failure","Neither url nor image parameter provided results in a missing-input error","max_tokens outside the 16–512 range may be rejected or clamped","Payment failure via x402 protocol means no charge and no result","Image content that violates safety filters may be refused"],"whenToPreferThis":"Choose this endpoint when you need fast, pay-per-use image description or visual question answering without setting up an API key or account. It is ideal for one-off image captioning, OCR-style text reading from photos, or chaining with translation and text-to-speech steps. At $0.005 USDC per call and ~1-second latency, it suits high-throughput pipelines or ad-hoc agent tasks where pre-paying for a subscription is impractical.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":4,"lastUsedAt":"2026-10-11T08:45:59.142Z","lastSuccessfullyRanAt":"2026-10-11T08:45:59.142Z","lastHealthCheckAt":"2026-10-12T05:56:00.346Z","isFirstParty":false,"canonicalSlug":"flat-rate-llm-image-describe-b31c7617"}