MCP Registry
Captcha
Replace MCP 429 errors with PoW challenges or Lightning micropayments. Drop-in rate control for MCP servers — no accounts, free fallback, self-hosted. Three tools: challenge, verify, status. Stdio + HTTP transports, stdlib only.
Install
n8n
# expose as webhook: npx -y @powforge/captcha-mcpbash
npx -y @powforge/captcha-mcpclaude
npx -y @powforge/captcha-mcpcursor
npx -y @powforge/captcha-mcpchatgpt
npx -y @powforge/captcha-mcpPublisher
zekebuilds
License
MIT
Format
npx
Price
Free
Stacks
Tags
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