mcp-v8: V8 JavaScript MCP Server

A Rust-based Model Context Protocol (MCP) server that exposes a V8 JavaScript runtime as a tool for AI agents like Claude and Cursor. Supports persistent heap snapshots via S3 or local filesystem, and is ready for integration with modern AI development environments.

→ r33drichards/mcp-js · listed on mcp_so

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mcp.so

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// key findings

✅

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 1 credential: GITHUB_PERSONAL_ACCESS_TOKEN

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

// required environment variables

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

configWIDDERSHINS

🔐 secretGITHUB_PERSONAL_ACCESS_TOKEN

configMCPJS_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 3 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/r33drichards-mcp-js-1ub0x2)](https://m8ven.ai/mcp/r33drichards-mcp-js-1ub0x2)

commit: bddb1feebe679fc15d57ce8ccb463ff527dc247f

code hash: e38ced7e66b1dad14d6956c8846218b132c5101cc97bb51c0dbc5c4ba90bad9d

verified: 6/26/2026, 9:54:02 AM

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