---
title: "FCaptcha"
pageType: "tool-profile"
schemaVersion: "1.0"
snapshotId: "tv-20260915-f4c107995a2e"
generatedAt: "2026-09-15T07:02:20.000Z"
canonicalUrl: "https://toolvitals.com/tools/fcaptcha/"
jsonUrl: "https://toolvitals.com/api/agent/tools/fcaptcha"
indexable: false
---

# 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.

## Decision context

- Status: data pending
- ToolVitals score: Not collected
- Health score: Not collected
- Shipping score: Not collected
- Score mode: evidence watch
- Data confidence: 90/100
- Source coverage: 100/100
- Last evidence check: 2026-09-15

## Classification

- Use case: Uncategorized (uncategorized)
- Category: Security & Compliance (security)
- Tool mode: Source-visible project
- Openness: OSI-approved OSS
- License: MIT
- Tags: open-source, anti-bot, behavioral-analysis, bot-detection, captcha, fingerprinting, go, headless-browser-detection, nodejs, playwright-detection, privacy, proof-of-work, puppeteer-detection, python, scraping, scraping-protection

## Public repository signals

- Repository: [WebDecoy/FCaptcha](https://github.com/WebDecoy/FCaptcha)
- Stars: 211 (adoption context only)
- Forks: 19
- Open issues: 0
- Last commit date: 2026-09-15
- Releases in 90 days: 30

## Source receipts

- [Official website](https://webdecoy.com/) — checked 2026-09-15
- [Source repository](https://github.com/WebDecoy/FCaptcha) — checked 2026-09-15

## Discovery status

- Search indexable: no
- Reason: thin or data-pending tool evidence

## Interpretation limits

- ToolVitals scores summarize bounded public maintenance, shipping, openness, and evidence signals. They are not user-review ratings.
- GitHub stars and related popularity metrics are adoption context, not quality evidence.
- Missing values mean not collected or not confidently established; they do not mean zero.
- Public signals do not prove security, uptime, support quality, customer satisfaction, or production suitability.
- Verify material decisions against the linked first-party sources and your own requirements.