{"uid":"cap_T_MBB5dBMIchMQg4eqciM","slug":"fastapi-online-qr-code-generator-60ddd598","name":"fastapi.online — QR Code Generator","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/qrcode","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"size":{"type":"integer","maximum":1024,"minimum":64},"text":{"type":"string","maxLength":2000,"minLength":1}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.0005","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":"$0.0005/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.0005","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.0005","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_OxFOLXNkNML9QmpjNB-ir","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.0005","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Generates a QR code image from a text or URL string, returning it as a base64-encoded image.","exampleAgentPrompt":"Generate a QR code for https://myshop.example.com/promo at 300 pixels in size.","exampleUseCases":[{"title":"QR code for a product landing page","prompt":"Create a QR code for https://mystore.com/summer-sale so I can print it on flyers — make it 400 pixels wide."},{"title":"Encode Wi-Fi credentials as QR code","prompt":"Generate a QR code from the text 'WIFI:T:WPA;S:GuestNetwork;P:welcome123;;' at 256 pixels so guests can scan and connect."},{"title":"QR code for a business card","prompt":"Make a 300-pixel QR code for this vCard string: 'BEGIN:VCARD\\nFN:Jane Doe\\nTEL:+15551234567\\nEND:VCARD' so I can add it to my digital business card."}],"resultDescription":"A JSON object containing a base64-encoded PNG image of the generated QR code under the key 'image_base64'. The agent can decode this string to display or embed the QR code image directly.","failureModes":["Missing 'text' field returns a validation error","Extremely long text strings may exceed QR code capacity and cause generation failure","Invalid size values (negative or zero) may return an error","Payment failure or insufficient USDC balance returns 402 Payment Required"],"whenToPreferThis":"Choose this endpoint when you need a quick, pay-per-call QR code generator with no signup required. It is ideal for agents that generate QR codes on demand as part of a broader workflow (e.g., marketing automation, product pages, event ticketing). It accepts raw text or URLs and returns a base64 image ready for embedding or download.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T13:26:36.218Z","isFirstParty":false}