express-mcp-server@1.0.3
VERIFIED· install onlyPublisher claims: "A tool that creates an mcp server for your current express routes." Observed in sandbox: no network, touches nothing outside the project, writes no memory.
Coverage
Nothing executable in the bundle ran; the trace covers the install step only.- Tested
- every file read, file written and host contacted by what ran
- Not tested
- use of the skill by an agent
Is [email protected] safe to install?
KillerSkills ran it in the KillerSkills honeypot sandbox (1 scenario; nothing executable in the bundle ran; the trace covers the install step only) on 2026-11-13 and scored it 87/100 (Verified). In what ran, nothing we could detect went wrong: no undeclared network egress, no credential reads, no persistent instruction writes. What it does with a real credential was not observed; the static findings and the publisher carry the rest of the score. Summary: no network, touches nothing outside the project, writes no memory.
Behavior trace
Honeypot run · 0 s · 1 scenarios · 0 deviationsStatic findings
console.log(`Generated MCP server with ${routes.length} tools at: ${options.outputPath}`);Fix: Remove the call, or declare the host in frontmatter and explain in the README what is sent and why.…umber;\n message: string;\n data?: Record<string, any>;\n };\n}\n\nclass McpServer {\n private tools = new Map<string, McpTool>();\n private serverName: string;\n private serverVersion: string;\n\n constructor(name: string, version: string…Fix: Namespace tool names and keep tool descriptions literal; no instructions to the agent inside them.Cost to the agent
Tokens estimated at four characters each. Skills load their instruction text when triggered; the figure is what that costs.
Known vulnerabilities
No advisories in OSV for express-mcp-server@1.0.3 as of 16 h ago. This is the package itself, not its dependencies.