{"uid":"cap_Yap2sbOJkLZzscNil-2CA","slug":"relaystation-image-grayscale-converter-4f236ba7","name":"RelayStation Image Grayscale Converter","description":"$0.0003/MP. Convert any image to grayscale — one call, any input format. 1¢ x402 min; remainder auto-credits — relaystation.ai/penny","url":"https://api.relaystation.ai/v1/image/grayscale","method":"POST","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method","bodyType","body"],"properties":{"body":{"properties":{}},"type":{"type":"string","const":"http"},"method":{"enum":["POST","PUT","PATCH"],"type":"string"},"bodyType":{"enum":["json","form-data","text"],"type":"string"}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"registry","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_tVyf9EKtngh4ZCC2VSqdK","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":"Converts any image to grayscale, priced per megapixel, accepting any common input format.","exampleAgentPrompt":"Convert this product photo to grayscale — just strip out all the color and give me the black-and-white version of the image.","exampleUseCases":[{"title":"Grayscale product images for print","prompt":"I need to convert this color product photo to grayscale for a black-and-white print catalog — can you strip the color out of this image for me?"},{"title":"Monochrome social media art","prompt":"Turn this portrait photo into a black-and-white version for me — I want that classic monochrome look for my Instagram post."},{"title":"Preprocessing images for ML pipeline","prompt":"Convert this batch of training images to grayscale before I feed them into my model — start with this first image and strip all color information from it."}],"resultDescription":"Returns a grayscale version of the submitted image in the same or compatible output format, with all color channels removed and luminance preserved. Billed at $0.0003 per megapixel with a $0.01 minimum via x402 micropayment; any overpay is auto-credited.","failureModes":["Unsupported or corrupt image format returns an error","Image too large or exceeding megapixel limits may be rejected","Network timeout for very large image uploads","Insufficient USDC balance or x402 payment failure","Malformed request body or missing image data"],"whenToPreferThis":"Choose this endpoint when you need a simple, reliable, per-megapixel-billed image-to-grayscale conversion without needing to manage image processing libraries locally. It is ideal for agents handling arbitrary input image formats where format negotiation is undesirable, and when micropayment-based pay-per-use billing via x402 is preferred over subscription APIs.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T00:44:39.129Z","isFirstParty":false}