{"uid":"cap_aJSmWKq-KUFCzjIhes_lt","slug":"relaystation-face-detection-api-0dfb5b8c","name":"RelayStation Face Detection API","description":"$0.005/image. Detect faces with attributes — age range, emotions, pose, landmarks (Rekognition). 1¢ x402 min; remainder auto-credits — relaystation.ai/penny","url":"https://api.relaystation.ai/v1/vision/detect-faces","method":"POST","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method","bodyType","body"],"properties":{"body":{"type":"object","properties":{"file":{"type":"object","description":"cputools input-source: { inline: <base64 ≤ 4 MiB> } or { inputKey: <scratch key from /v1/cputools/upload-url, ≤ 50 MB> }."},"attributes":{"enum":["DEFAULT","ALL"],"type":"string"}}},"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_zfOnDD0OKoTcYIHktZrLs","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":"Detects faces in an image and returns attributes including age range, emotions, pose, and facial landmarks using AWS Rekognition.","exampleAgentPrompt":"Analyze this photo and tell me how many faces are detected, their estimated age ranges, what emotions they appear to be showing, and their facial poses.","exampleUseCases":[{"title":"Emotion detection for UX research","prompt":"I have a photo from our user testing session — can you detect the faces in it and tell me what emotions each person appears to be expressing, along with confidence scores?"},{"title":"Age range estimation for audience analytics","prompt":"Run face detection on this crowd photo and give me the age ranges and emotions for every face you find — I want to understand our audience demographics."},{"title":"Facial pose analysis for photo quality check","prompt":"Can you analyze this profile photo and tell me the facial pose, landmarks, and whether the face is well-positioned — I need to know if it's suitable for ID verification?"}],"resultDescription":"Returns a list of detected faces, each with a bounding box, estimated age range (min/max), detected emotions with confidence scores, facial pose (pitch, roll, yaw), and facial landmark coordinates (eyes, nose, mouth, etc.).","failureModes":["No faces detected in the image — returns empty face list","Image URL unreachable or invalid — returns 4xx error","Image format unsupported — returns error indicating accepted formats","Image too large or too small — returns size constraint error","Payment insufficient — x402 payment required response","Low-confidence detections returned when faces are partially obscured"],"whenToPreferThis":"Choose this endpoint when you need structured facial attribute data (age, emotion, pose, landmarks) from AWS Rekognition at a low per-image cost of $0.005. Prefer it over generic object detection when the specific need is face-centric analysis. It's ideal for agents automating photo moderation, audience analytics, identity pre-screening, or UX research pipelines.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T06:55:25.835Z","isFirstParty":false}