captcha-mcp

Middleware that gates MCP tool calls behind a Hashcash proof-of-work challenge or an L402 Lightning payment via self-hosted LNbits.

#3231 by GitHub starsBusiness workChecked 2026-11-02

What it connects

Middleware that gates MCP tool calls behind a Hashcash proof-of-work challenge or an L402 Lightning payment via self-hosted LNbits.

Registry listing — description sourced from the publisher's entry in an awesome-list. Setup, compatibility and requirements are not verified; see the repository.

Source: https://github.com/zekebuilds-lab/captcha-mcp · ★ 1 on the source repo

Setup instructions and compatibility are compiled from publisher docs and community reports, not hands-on testing, unless a step is marked Tested. Check the source before relying on a setup.