Lambcha

Fully serverless CAPTCHA API

Usage

Send a GET request to the endpoint

{
    "id": "20EcBHVy66sV6FV4KGbCWGnZjz3",
    "imageUrl": "endpoint/20EcBHVy66sV6FV4KGbCWGnZjz3"
}

Application shows the image hosted at the imageUrl and the user enters the code they see.

Example image:

The application sends a POST request with the details

{
    "id": "20EcBHVy66sV6FV4KGbCWGnZjz3",
    "code": "RJBGB6"
}

API returns an HTTP code with a message for the response.

HTTP 200
{
    "message": "OK"
}

HTTP 400
{
    "message": "INCORRECT"
}

TODO

• improve api gateway error response formatting
• secure behind api keys
• make image length scale to code length automagically
• return 404 for expired items that still exist in dynamodb
• generate TTS files on demand using Amazon Polly