hush-mcp

MCP server for HUSH: your agent browses the Agent Shop and pays per call over private x402 on Solana. Every call pays a one-time stealth address; spending stays inside the limits you set (daily budget, per-call cap, allowlist, kill switch).

npx -y hush-mcp

Setup

1. Open https://hushagents.com/app, connect Phantom, create an agent, fund it with a little SOL, and copy its agent key (hush_..., shown once).
2. Add the server to your client with HUSH_AGENT_KEY.

Without a key the read-only tools (hush_shop, hush_stats, hush_receipts) still work; hush_buy needs the key.

Claude Desktop

~/Library/Application Support/Claude/claude_desktop_config.json (macOS) or %APPDATA%\Claude\claude_desktop_config.json (Windows):

{
  "mcpServers": {
    "hush": {
      "command": "npx",
      "args": ["-y", "hush-mcp"],
      "env": { "HUSH_AGENT_KEY": "hush_..." }
    }
  }
}

Cursor

~/.cursor/mcp.json (or .cursor/mcp.json in a project): same JSON as above.

Claude Code

claude mcp add hush --env HUSH_AGENT_KEY=hush_... -- npx -y hush-mcp

Tools

| Tool | What it does | Spends | |---|---|---| | hush_shop | Lists listings: id, seller, price, Hush Score | no | | hush_buy | Buys one call (listing, optional input), pays a one-time address, returns the answer | yes, within your leash | | hush_stats | Agent GDP (aggregate) and seller scores with their anchored epoch roots | no | | hush_receipts | Latest public receipts (commitments only) | no |

Env

| Var | Default | |---|---| | HUSH_URL | https://hushagents.com | | HUSH_AGENT_KEY | none (needed for hush_buy) |

Limits: privacy hides which seller was paid, not your agent's wallet. Not zero-knowledge. MIT · source