APIs.guru vs QR code

APIs.guru maintains the largest searchable directory of OpenAPI/Swagger definitions for public APIs, normalizing specs pulled from thousands of providers into one browsable catalogue. Its own machine-readable endpoint (api.apis.guru/v2) needs no key or account and returns the full listing plus individual OpenAPI documents as JSON or YAML. The project is open-source and entirely free, run as a community effort rather than a paid product.

goQR.me's QR code API, served from api.qrserver.com rather than the marketing domain, offers two commands: create-qr-code renders a PNG, SVG, or EPS QR image from a data string, while read-qr-code decodes an existing QR image (by URL or upload) and returns the result as JSON. Run by Foundata GmbH, it imposes no request limit beyond reserving the right to reject abusive traffic, and it logs only the requesting referrer/IP, never the QR content itself.