Liveauth Mcp Server

@dulzuradev

About Liveauth Mcp Server

LiveAuth MCP Server gives AI agents cryptographic proof-of-work + Lightning

#auth #captcha #lightning #l402 #mcp #pow #proof-of-work #x402

Config

Add this server to your MCP-compatible client using the configuration below.

{
  "mcpServers": {
    "liveauth": {
      "command": "npx",
      "args": [
        "-y",
        "@liveauth-labs/mcp-server"
      ],
      "env": {
        "LIVEAUTH_API_KEY": "la_pk_xxx"
      }
    }
  }
}

Tools

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Overview

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

FAQ from Liveauth Mcp Server

What is the difference between demo and production mode?

Demo mode returns a real Lightning invoice but simulates payment confirmation, so you can test the flow without an account. Production mode requires a LiveAuth API key and confirms payments against the LiveAuth backend.

What authentication methods does it support?

It supports proof-of-work (PoW) challenges, Lightning Network invoices (BOLT11), and L402 bundle macaroons.

How do signed receipts work?

Each paid tool invocation returns an HMAC-SHA256 signed receipt with a revenue event ID, sats amounts, and metadata. Receipts can be stored with tool results for later auditing or reconciliation.

What are the runtime dependencies?

Liveauth Mcp Server requires Node.js and runs via npx or as an installed npm package. It communicates with api.liveauth.app over HTTPS and assumes your MCP client supports stdio (JSON‑RPC 2.0).

Can it be used with other MCP clients besides Claude Desktop?

Yes, it works with any MCP-compatible client (Cursor, VS Code, ChatGPT, Windsurf, Continue, Cline) that supports stdio transport.

Frequently asked questions

What is the difference between demo and production mode?

What authentication methods does it support?

It supports proof-of-work (PoW) challenges, Lightning Network invoices (BOLT11), and L402 bundle macaroons.

How do signed receipts work?

Each paid tool invocation returns an HMAC-SHA256 signed receipt with a revenue event ID, sats amounts, and metadata. Receipts can be stored with tool results for later auditing or reconciliation.

What are the runtime dependencies?

Liveauth Mcp Server requires Node.js and runs via `npx` or as an installed npm package. It communicates with `api.liveauth.app` over HTTPS and assumes your MCP client supports stdio (JSON‑RPC 2.0).

Can it be used with other MCP clients besides Claude Desktop?

Yes, it works with any MCP-compatible client (Cursor, VS Code, ChatGPT, Windsurf, Continue, Cline) that supports stdio transport.

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