// vendor intelligence
what friendly captcha detects
friendly captcha is a captcha vendor. it declares strong challenge (2/3), partial server coherence (1/3) capability. below: the layers it enforces and the cookie, endpoint, and header tells it leaves.
enforced detection layers
| detection layer | capability | what it covers |
|---|---|---|
| tls / network fingerprint | unaddressed | the ja3/ja4 clienthello and http/2 settings signature the edge reads before any javascript runs. |
| ip reputation | unaddressed | asn, proxy-class, and abuse-history scoring of the connecting address. |
| js fingerprint | unaddressed | canvas, webgl, navigator, font, and audio signals collected in-page. |
| behavioral | unaddressed | mouse, keyboard, and timing biometrics read from interaction cadence. |
| challenge | 2/3 strong | interactive or invisible captcha and proof-of-work gates. |
| attestation | unaddressed | hardware or os-backed integrity checks (webauthn, play integrity, device attestation). |
| server coherence | 1/3 partial | cross-checking headers, tls, ip, and js for internal consistency. |
unaddressed means this tool type does not operate at that layer, so it is not a failing score. a red 0/3 is a real, declared score of zero. both are declared capability, not live pass-rates.
tells
- endpoints
- api.friendlycaptcha.com, eu.frcapi.com
- header tells
- friendlycaptcha.com, frc-captcha, frc-captcha-solution
- gate token
- frc-captcha-solution (frc-captcha-response)
privacy-first proof-of-work captcha (no puzzle, no tracking cookie, gdpr-friendly); the browser solves an escalating hashcash-style pow, server verifies the solution token. cost, not behavioural scoring.
questions
- what does friendly captcha detect?
- it declares strong challenge (2/3), partial server coherence (1/3) capability. layers not listed are not enforced by friendly captcha.
- what are friendly captcha's tells?
- header/script tells: friendlycaptcha.com, frc-captcha, frc-captcha-solution. endpoints: api.friendlycaptcha.com, eu.frcapi.com.
other vendors
where to go from here
layer intensities are catalog-declared (0..3), speculative, and the catalog carries no capture date for this record. layer definitions in the glossary.