CAPTCHA Bypass Hunter

CAPTCHA Bypass Hunter is a Quality skill for Claude Code, published by elementalsouls in Claude-BugHunter.

3.6K stars559 forkson elementalsouls/Claude-BugHunterAdded 2026/08/16+3% in starsRepository updated 2026/08/16

ai-securityanthropicapplication-securitybug-bountybugbountybugcrowdclaudeclaude-codeclaude-skillsethical-hackinghackeroneoffensive-securitypentestingred-teamsecurity-toolsweb-security

Install in seconds

Install CAPTCHA Bypass Hunter

Copy CAPTCHA Bypass Hunter into your Claude Code skills folder. Run the command in your terminal, or review the source on GitHub before installing.

terminal

npx degit https://github.com/elementalsouls/Claude-BugHunter/tree/main/skills/hunt-captcha-bypass ~/.claude/skills/hunt-captcha-bypass

Requires Node.js. Downloads this skill only — not the rest of the repository — into your Claude Code skills folder.

Without Node.js

git clone https://github.com/elementalsouls/Claude-BugHunter.git

Clones the whole repository, then copy the skill’s own directory into your skills folder yourself.

In this catalog

Source file: skills/hunt-captcha-bypass/SKILL.md in elementalsouls/Claude-BugHunter
Installs to: ~/.claude/skills/hunt-captcha-bypass
Collection: One of 25 skills cataloged from this repository
Category: Quality — 1354 skills

What CAPTCHA Bypass Hunter does

CAPTCHA Bypass Hunter identifies CAPTCHA validation weaknesses such as omitted fields, replayable tokens, and missing server-side checks. Use it during security testing to find bypasses that enable brute force, account farming, or automated abuse.

CAPTCHA Bypass Hunter is cataloged under Quality on DirSkills. CAPTCHA Bypass Hunter comes from a repository tagged ai-security, anthropic, application-security, bug-bounty and bugbounty.

Documentation

README

Excerpt

Autonomous Testing Priority

The fastest test: just omit the CAPTCHA field entirely. Most CAPTCHA bypass bugs are client-side-only validation.

Pattern 1 — Omit the CAPTCHA field (most common, most automatable):

GET the form/endpoint that shows a CAPTCHA to understand its field name (usually g-recaptcha-response, captcha, captcha_token, captcha_answer, h-captcha-response)
POST the form with ALL fields EXCEPT the CAPTCHA field
If the action succeeds (200, redirect, or "success" message) → no server-side CAPTCHA validation
Proof: the state-changing action completes without a valid CAPTCHA field (compare against a baseline request that includes it)

This is the opening of the README. Read the full README on GitHub.

Commands CAPTCHA Bypass Hunter provides

Slash commands named in this skill’s SKILL.md, listed in the order they first appear.

/register

Frequently asked about CAPTCHA Bypass Hunter

What else does elementalsouls publish alongside CAPTCHA Bypass Hunter?
CAPTCHA Bypass Hunter is one of 25 skills that DirSkills catalogs from elementalsouls/Claude-BugHunter, the repository it ships in. Its siblings there include API Misconfig Hunter, APK Red Team Pipeline and Auth Bypass Hunting. Each one is a separate skill with its own page in this directory, installs the same way CAPTCHA Bypass Hunter does, and is maintained by elementalsouls in that same repository. The rest of the collection is listed on the elementalsouls/Claude-BugHunter page.
How does CAPTCHA Bypass Hunter compare to other Quality skills?
CAPTCHA Bypass Hunter ranks #372 by stars among the 1354 Quality skills in this catalog. The most-starred ones next to it are Benchmark, Benchmark Optimization Loop and API Design Patterns. DirSkills ranks by the star count of the repository each skill ships in, so that order reflects how popular those repositories are rather than any review of CAPTCHA Bypass Hunter against them. Open each page to compare what they document and how they install.