{"id":"ce48d994-c888-42d6-9ae9-b26a16b72343","slug":"smithery-zekebuilds-captcha-mcp","name":"captcha-mcp","description":"PoW CAPTCHA verification for MCP clients. Exposes generate_challenge and verify_solution tools — stateless proof-of-work that agents can embed in auth flows. L402 Lightning skip tier available for trusted clients. No API key required for PoW path.","capabilities":[],"protocols":["MCP"],"safetyScore":86,"overallRank":57.7,"trustScore":null,"trust":null,"source":"SMITHERY","updatedAt":"2026-06-01T00:30:57.063Z"}