FCaptcha

Detect bots, vision AI agents, and headless browsers through 40+ behavioral signals and SHA-256 proof of work. Self-hosted, privacy-first, and fully open source.

Data confidence93/100
Source coverage86/100
Publish confidence90/100
Evidence checkedJul 31, 2026

Evidence Watch

ToolVitals has useful public signals for FCaptcha, but not enough evidence to publish a strong verdict score yet.

GitHub source93/100 data confidence
About this tool

What ToolVitals knows about FCaptcha

Detect bots, vision AI agents, and headless browsers through 40+ behavioral signals and SHA-256 proof of work. Self-hosted, privacy-first, and fully open source.

This tool has an OSI-approved open-source license signal.

Useful public signals are available, but not enough for a strong ToolVitals verdict yet.

Source-visible projectUncategorizedOSI-approved OSSEvidence Watch
Repository

GitHub Activity

JS
WebDecoy/FCaptcha
Primary Language
JavaScript
Commits 30d
47
Commits 90d
74
Default Branch
main
License
MIT
Repository Status
Active repository
Evidence

Signal Quality

Data Confidence93/100Strong
Source Coverage86/100Strong
Publish Confidence90/100Strong

ConfidenceHigh-confidence score from multiple public signals.

Zombie RiskNo meaningful zombie signal right now.

How ToolVitals scores work
Openness

License Evidence

Class
OSI-approved OSS
License
MIT

This tool has an OSI-approved open-source license signal.

Sources

Tracked Sources

Profile

Classification

Category
Security
Use Case
Uncategorized
Openness
OSI-approved OSS
License
MIT
Tool Mode
Source-visible project
Score Model
Public Signal Watch
Score Visibility
Evidence Watch
Status
Data Pending
Maintainers

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Tags
open-sourceanti-botbehavioral-analysisbot-detectioncaptchafingerprintinggoheadless-browser-detectionnodejsplaywright-detectionprivacyproof-of-workpuppeteer-detectionpythonscrapingscraping-protectionsecurityselenium-detectorself-hostedweb-securityapi-firstanti-aianti-ai-detectionai-bot-detectioninvisible-captchatls-fingerprinting