{"uid":"cap_kRx6qN3J_YKZvK5vMvuMB","slug":"combify-compute-image-captioning-visual-q-a-9b20f7d7","name":"Combify Compute Image Captioning & Visual Q&A","description":"Answer questions about an image or describe what it shows (Llama 3.2 11B vision), fixed price $0.008 USDC. Use this when the input is an image; use /chat for text-only questions. POST JSON body {image (required, base64 or data:image/... URI, max 4 MB decoded, PNG/JPEG/GIF/WEBP), prompt (optional question, defaults to describing the image), max_tokens (optional 1-512, default 256)}. Returns {text}. Unpaid calls get 402; paid calls settle only on success.","url":"https://compute.combify.app/caption?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"image":{"type":"string","description":"Base64-encoded image, max 4 MB decoded"},"prompt":{"type":"string","description":"Question about the image"},"max_tokens":{"type":"integer","description":"Max output tokens, 1 to 512"}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.008","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":"0.8000","medianCents":"0.8000","p90Cents":"0.8000","minCents":"0.8000","maxCents":"0.8000","p95Cents":"0.8000","sampleCount":15,"varies":false,"failureChargeRate":null},"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.008/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.008","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.008","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_l_Tqne8n1Kz1iIoXsDlsM","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.008","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Answers questions about an image or describes its contents using Llama 3.2 11B vision model for $0.008 USDC per call","exampleAgentPrompt":"Can you look at this JPEG image I'm attaching and tell me what's in it — specifically, are there any people visible and what are they doing? Keep the answer under 200 tokens.","exampleUseCases":[{"title":"Damage assessment from photo","prompt":"I have a base64-encoded photo of my car after an accident — can you describe the visible damage in detail so I can include it in my insurance claim?"},{"title":"Accessibility alt-text generation","prompt":"Here's a product image from our website in base64 PNG format — write me a concise alt-text description of what it shows so we can make the page more accessible."},{"title":"Chart data extraction","prompt":"I've got a screenshot of a bar chart from a PDF report — can you read the approximate values from it and tell me what the chart is showing? Limit your response to 300 tokens."}],"resultDescription":"Returns a JSON object with a 'text' field containing the model's description of the image or its answer to the provided question, up to max_tokens in length.","failureModes":["402 Payment Required if the x402 payment header is missing or invalid","Image exceeds 4 MB decoded size limit — request rejected","Unsupported image format (only PNG, JPEG, GIF, WEBP accepted)","max_tokens out of range (must be 1–512)","Malformed base64 or invalid data URI in image field","Model timeout on very complex images or long prompts"],"whenToPreferThis":"Use this endpoint when the input is an image and you need a description or answer to a visual question. It uses Llama 3.2 11B vision which is well-suited for general scene understanding, object identification, OCR-light tasks, and chart reading. Prefer the sibling /chat endpoint for purely text-based questions. At $0.008 USDC per call it is cost-effective for single-image analysis; payment only settles on success.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":15,"lastUsedAt":"2026-10-11T19:58:38.401Z","lastSuccessfullyRanAt":"2026-10-11T19:58:38.401Z","lastHealthCheckAt":"2026-10-12T06:21:00.066Z","isFirstParty":false,"canonicalSlug":"combify-compute-image-captioning-visual-q-a-9b20f7d7"}