FDKEY verification middleware for MCP servers — gate AI-agent access behind LLM-only puzzles. Runs on Node 18+, Cloudflare Workers, Bun, and Deno.
{
"mcpServers": {
"fdkeymcp": {
"command": "npx",
"args": [
"-y",
"@fdkey/mcp"
]
}
}
}