# markets/invisible_captcha

🍯 Unobtrusive and flexible spam protection for Rails apps

Repository: https://github.com/markets/invisible_captcha
Canonical: https://ross.abutalabs.com/products/invisible_captcha
Homepage: https://rubygems.org/gems/invisible_captcha
Language: Ruby
License: MIT
License Family: permissive
Topics: honeypot, rails, anti-spam, captcha, security, honeypot-field, spam-detection
Last push: 2026-07-15T07:55:01+00:00

## Health v2 (maintenance only)
Score: 74/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 92, release rhythm 35, longevity 100
- inputs: {"age_days": 5201, "days_push": 49, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1250, forks 67 (observed 2026-08-28T04:04:08.056957+00:00)

## What it is
A Ruby gem providing unobtrusive spam protection for Rails applications using honeypot techniques. It adds hidden form fields that bots fill in, plus time-sensitive submission checks and IP-based rate validation, without extra steps for real users.

## Use cases
- stop spam bots submitting Rails forms
- add honeypot protection to contact forms
- block bot signups without CAPTCHA challenges
- protect comment forms from spambots
- rate-limit form submissions by IP
- replace reCAPTCHA with invisible spam filtering

## When to choose
- you run a Rails app and want frictionless spam protection
- you want to avoid annoying users with visible CAPTCHAs
- you need simple, configurable bot detection for forms

## When to avoid
- you need protection against sophisticated targeted attacks rather than generic bots
- your app is not built on Rails
- you require image/audio CAPTCHA challenges for compliance

## Facets
- artifact type: library
- maturity: active
- function: security, middleware, web-framework
- domain: security, web-development, backend
- platform: ruby
- tags: honeypot, anti-spam, captcha, rails-gem, form-protection, spam-detection, web-server

## Member repositories
- markets/invisible_captcha (main) score 74

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:04:08.056957+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T05:07:44.924845+00:00, confidence not recorded.
  - readme: https://github.com/markets/invisible_captcha (fetched 2026-08-28T04:04:08.056957+00:00, sha 860d12867c7c)
  - homepage: https://rubygems.org/gems/invisible_captcha (fetched 2026-08-29T12:18:39.448195+00:00, sha cdbf108da170)
  - site_page: https://guides.rubygems.org/command-reference (fetched 2026-08-29T12:18:39.457364+00:00, sha ef62154d6253)
  - site_page: https://rubygems.org/pages/about (fetched 2026-08-29T12:18:39.461201+00:00, sha e4248571fa5d)
- Data as of 2026-08-30T08:39:29.467469+00:00.