captcha.cc Human Verification

cc.captcha/captchaccVersion 1.0.0

Human verification CAPTCHA with visual and selective-listening audio challenges.

Status

Responds266 msNov 14, 2026, 13:41 UTCAnswered our handshake without sign-in.

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Data from the official MCP Registry, checked by run.zero. How we check

Streamable HTTP

https://captcha.cc/mcpResponds266 msNov 14, 2026, 13:41 UTC

No sign-in

claude mcp add --transport http captchacc https://captcha.cc/mcp

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Settings > Connectors > Add custom connector
Name: captchacc
Remote MCP server URL: https://captcha.cc/mcp

{
  "mcpServers": {
    "captchacc": {
      "url": "https://captcha.cc/mcp"
    }
  }
}

code --add-mcp '{"name":"captchacc","type":"http","url":"https://captcha.cc/mcp"}'

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3 tools

Tools of captcha.cc Human Verification
	Description		Read-only	Idempotent	Open world
`create_challenge`Create a live captcha.cc challenge for a site key and allowed hostname. Useful for smoke tests and integration checks.	Create a live captcha.cc challenge for a site key and allowed hostname. Useful for smoke tests and integration checks.	No	No	No	No
`make_siteverify_request`Return a server-side fetch example for redeeming a captcha.cc proof token exactly once.	Return a server-side fetch example for redeeming a captcha.cc proof token exactly once.	No	Yes	Yes	No
`make_widget_snippet`Return a minimal browser SDK snippet for mounting captcha.cc and submitting the proof token to an application endpoint.	Return a minimal browser SDK snippet for mounting captcha.cc and submitting the proof token to an application endpoint.	No	Yes	Yes	No

Registry status: Active
Published: Apr 13, 2026
Updated: Apr 13, 2026
Website: https://captcha.cc/docs/mcp⁠ (opens in a new tab)
Repository: https://github.com/earonesty/captcha⁠ (opens in a new tab)
Categories (suggested): Security Design and mediaSuggested categories are assigned automatically from the registry text and may be wrong. Verified operators can correct them.
GDPR: Not declared