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Side-by-side comparison of two Model Context Protocol servers. Pick the right one for Claude Desktop, Claude Code, or Cursor.
PoW CAPTCHA verification for MCP clients. Exposes generate_challenge and verify_solution tools — stateless proof-of-work that agents can embed in auth flows. L4
| Feature | captcha-mcp | GitHub |
|---|---|---|
| Pricing | Free | Free |
| Installs | — | 42 108 |
| Rating | — | 4.9 (821) |
| Verified | — | |
| Hosted | Hosted | Hosted |
| Tools | — | 5 |
| Category | development | development |
| Author | zekebuilds | GitHub |
| Repo | smithery-ai/cli | modelcontextprotocol/servers |
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.
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