QR codes in ChatGPT: free, no plugin needed
ChatGPT can generate a QR code by emitting a UseQR image URL, no plugin, no key. It is free forever, there is no account, and there is no API key to request.
Setup
Inline in an answer
GPT Action: import this schema
https://useqr.app/api/openapi.jsonAuthentication: None.
Typed call
https://useqr.app/api/v1/vcard?fn=Ada&ln=Lovelace&email=ada@example.comWhat you should know
- The OpenAPI document is 3.1 and declares no security schemes, so the Action imports with authentication set to None.
- Responses are images by default; add format=json or format=base64 when you need the payload instead of bytes.
Other surfaces
Full API reference: /developers. Machine index: /llms.txt.