Why it exists
Captcha started as a locksmith's daydream: a small, honest gate that keeps bots out without interrogating humans. Style it with a POST call, hang it on your form, and let the hash do the remembering.
APISelf-hostable
What it does
Captcha is a traditional captcha providing and verification service. A POST endpoint takes JSON data to style the captcha and returns it as an image with a hash code. That hash code is then used to verify the answer.
- POST endpoint with JSON styling options
- Returns captcha image plus hash code
- Hash-based answer verification
Privacy note: designed to keep your data on your device where possible. No unnecessary accounts or tracking.
Behind the piece
Captcha, in three sittings.
What it listens to
It studies old ticket stubs and wax seals — artifacts that prove something without explaining everything. The distorted letters are a handshake, not a puzzle box.
How it is composed
Kept deliberately traditional: JSON in for styling, an image plus a hash code out, verification by hash rather than session. No maze, no surveillance — just a well-made lock with a satisfying click.
More from Developer
DeveloperPrivacy-first
Interview prep
An interview prep site with focused material on React and Python.