# Arcanus > Arcanus is a decentralized dePIN privacy protocol on Arc Mainnet. Encrypted VPN by the gigabyte from independent cities, wallet-to-wallet voice, encrypted mail, live messenger, pay-per-token Infer, and a desktop browser that opens on the protocol. Keys stay on your device. Pay in $ARCANUS — native USDC on Arc covers gas, Infer, and is the secondary checkout. Arcanus is a dePIN privacy protocol on Arc Mainnet (chain 5042). MCP endpoint: https://arcanus.network/mcp Start with list_products, then wallet_challenge / wallet_login. Action tools return unsigned transactions and messages — sign them locally. Never send a private key, seed, or Shield note for unshield. Voice audio, WireGuard import, and XMTP send still happen on a device. Human app: https://arcanus.network/dashboard Docs: https://arcanus.network/docs Support: hello@arcanus.network ## MCP - Streamable HTTP: https://arcanus.network/mcp - Alias: https://arcanus.network/api/mcp - Docs: https://arcanus.network/docs#mcp Sign in with wallet_challenge then wallet_login. Action tools return unsigned transactions — sign them locally. Never send a private key. Cursor / Claude (Streamable HTTP): ```json { "mcpServers": { "arcanus": { "url": "https://arcanus.network/mcp" } } } ``` stdio-only clients: ```json { "mcpServers": { "arcanus": { "command": "npx", "args": ["-y", "mcp-remote", "https://arcanus.network/mcp"] } } } ``` ## Products - VPN (vpn): Encrypted internet by the gigabyte from independent cities. Built on Sentinel. https://arcanus.network/dashboard?tab=vpn - Voice (voice): Wallet-to-wallet encrypted calls. Minutes prepaid on Arc. Built on dTelecom. https://arcanus.network/dashboard?tab=voice - Mail (mail): Sealed letters, wallet to wallet. Built on XMTP. https://arcanus.network/dashboard?tab=mail - Messenger (messenger): Live encrypted chat on the same rail as Mail. Built on XMTP. https://arcanus.network/dashboard?tab=messenger - Infer (infer): Pay-per-token answers. OpenAI-shaped POST /v1/chat/completions. No API key — the wallet signs a USDC ceiling. https://arcanus.network/dashboard?tab=infer - Swap (swap): Token swap on Arc. Routed through Kairo. https://arcanus.network/swap - Bridge (bridge): Bring USDC onto Arc from another chain, then use the products. https://arcanus.network/bridge - Shield (shield): Private native USDC pool. Shield from one wallet, unshield to another with a note. https://arcanus.network/shield - Arcanus Browser (browser): Arcanus Browser 156.0.1 for Windows 64-bit. Privacy on by default, home at arcanus.network. https://arcanus.network/#browser - Pay per request (x402): x402 helper: verify and settle a tiny USDC bill for one HTTP call. We never hold the funds. https://arcanus.network/x402 ## Human app - Home: https://arcanus.network - Dashboard: https://arcanus.network/dashboard - Docs: https://arcanus.network/docs