Loop MCP DualRail

Enables AI agents to pay for MCP tool calls using either Bitcoin/Lightning (L402) or USDC (x402) rails, with unified settlement and a 21% discount for Bitcoin payments.

→ Loop-XXI/loop-mcp-dualrail · listed on glama

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// key findings

🚨

Known vulnerabilities in dependencies: 1 critical, 3 high

Affects packages this MCP installs at runtime. Upgrade or remove the affected dependency.

🔐

You'll be asked for 1 credential: PRIVATE_KEY

These are read from process.env at runtime. Make sure you trust where they’ll be sent.

// known CVEs in dependencies1 critical3 high

Disclosed vulnerabilities in this server's declared npm dependencies (via OSV). Whether each is reachable depends on the installed versions.

criticalvitest@3.2.4GHSA-5xrq-8626-4rwp

When Vitest UI server is listening, arbitrary file can be read and executed

high@modelcontextprotocol/sdk@1.17.1GHSA-345p-7cg4-v4c7

@modelcontextprotocol/sdk has cross-client data leak via shared server/transport instance reuse

high@modelcontextprotocol/sdk@1.17.1GHSA-8r9q-7v3j-jr4g

Anthropic's MCP TypeScript SDK has a ReDoS vulnerability

high@modelcontextprotocol/sdk@1.17.1GHSA-w48q-cv73-mx4w

Model Context Protocol (MCP) TypeScript SDK does not enable DNS rebinding protection by default

Depend on this server? Get alerted when its CVEs change.Watch this server free →

// required environment variables

This server reads these from process.env. You'll be asked to provide them before it can run.

configMODE

configNETWORK

configPORT

🔐 secretPRIVATE_KEY— TARGET_URL=https://server/mcp =0x... RAIL=l402 npx loop-mcp client-proxy

configRAIL— TARGET_URL=https://server/mcp PRIVATE_KEY=0x... =l402 npx loop-mcp client-proxy

configTARGET_URL

// full audit trail

The full breakdown of what we checked, the deductions that landed, the network hosts, the dependency advisories, and concrete fix guidance is available to verified publishers.

// improvement guidance — verified publishers only

We have 1 concrete improvement we can share with the publisher of this MCP. Each comes with specific guidance to raise the trust score.

// embed badge in your README

[![M8ven Score](https://m8ven.ai/badge/mcp/loop-xxi-loop-mcp-dualrail-cva8je)](https://m8ven.ai/mcp/loop-xxi-loop-mcp-dualrail-cva8je)

commit: 3e29cfed993b09427eb6ef86281c43a91ee0c055

code hash: 0b6fc4e11093a84f5727d75db23187e1adae54339770ba485001ceb609a26f72

verified: 6/29/2026, 11:23:30 AM

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