x402 MCP Proxy

A local MCP proxy that connects to remote MCP servers and automatically handles x402 payments, signing USDC on-chain when a tool returns HTTP 402.

→ openCMC/x402-mcp-proxy · listed on glama

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// key findings

⚠️

Known vulnerabilities in dependencies: 1 high

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

✅

No credential exfiltration, no sensitive file access, no obfuscation

Static analysis found nothing flowing your secrets to unexpected places.

✅

Open source with a license and README

Anyone can audit the code, the license is declared, and the publisher documents what it does.

🔐

You'll be asked for 2 credentials: EVM_PRIVATE_KEY, SVM_PRIVATE_KEY

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

// known CVEs in dependencies1 high

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

high@x402/svm@2.5.0GHSA-qr2g-p6q7-w82m

x402 SDK Security Advisory

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.

🔐 secretEVM_PRIVATE_KEY— 0xYOUR_PRIVATE_KEY_HERE

🔐 secretSVM_PRIVATE_KEY— Solana private key (base58-encoded). Used for USDC payments on Solana.

configX402_ALLOWED_ASSETS— Base USDC, Solana USDC Comma-separated allowlist of asset contract addresses

configX402_ALLOWED_NETWORKS— eip155:8453,solana:5eykt… Comma-separated allowlist of CAIP-2 network IDs

configX402_CONFIG— "": "/path/to/x402-mcps.json"

configX402_MAX_PAYMENT— 100000 (0.10 USDC) Maximum amount per single request (in asset smallest unit)

configX402_MAX_SPEND_PER_SESSION— 1000000 (1.00 USDC) Maximum cumulative spend per proxy session

configX402_REMOTE_MCPS— export ="cmc,https://pro.coinmarketcap.com/x402/mcp"

// 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 2 concrete improvements 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/opencmc-x402-mcp-proxy-17ddoc)](https://m8ven.ai/mcp/opencmc-x402-mcp-proxy-17ddoc)

commit: 63370b30ba250b7e9f8f79479b204d8cd7bb33b9

code hash: 31531fa1f85e3063a531bb348cfa465df1fa239b5aedb3557085ed2c78784317

verified: 6/24/2026, 10:11:08 AM

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