What is Liveauth Mcp Server?
Liveauth Mcp Server is an MCP server that provides authentication, pay-per-call metering, and signed receipts for AI agents and MCP tools. It uses proof-of-work (free, no account) or Lightning Network micropayments (sats) to gate API access, then meters and monetizes subsequent tool calls with per-call pricing and HMAC-signed receipts. It is designed for API providers and agent builders who want to stop bots, charge per call, and issue a tamper-evident audit trail.
How to use Liveauth Mcp Server?
You can run Liveauth Mcp Server in demo mode (no account) with npx @liveauth-labs/mcp-server. For production, set the LIVEAUTH_API_KEY environment variable and add it to your MCP client configuration (e.g., Claude Desktop’s claude_desktop_config.json). It also provides a TypeScript SDK for programmatic use, with helper functions like createMcpClient and createMcpGate.
Key features of Liveauth Mcp Server
- Proof-of-work and Lightning Network authentication (no accounts required)
- Per-call metering with configurable pricing in sats
- HMAC-SHA256 signed receipts (
mcp-call-receipt-v1) for every paid invocation
- idempotent revenue events with retry-safe keys
- L402 bundle support for prepaid MCP sessions
Use cases of Liveauth Mcp Server
- Stop bot scraping at the protocol layer using cost-of-attack economics
- Allow AI agents to access paid APIs without signup or OAuth
- Issue a verifiable audit trail for every paid tool call
- Offer Lightning-backed L402 bundles for prepaid MCP access
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