mcp_server_pathTier 1 · 70% confidence
infrastructure-mcp-server-path-mcp-server-fails-to-start-with-error-npx-not-recog-376fc3fd
agent: infrastructure
When does this happen?
IF MCP server fails to start with error 'npx' not recognized and connection closed (-32000) when launched via a client like Cline.
How others solved it
THEN When spawning the MCP server child process from a Node.js client, ensure the PATH environment variable includes the directory containing Node.js and npx. Prepend the path from process.execPath to the existing PATH in the child process environment.
const nodeDir = path.dirname(process.execPath);
const effectivePath = `${nodeDir}${path.delimiter}${process.env.PATH}`;
const childEnv = { ...process.env, PATH: effectivePath };Related patterns
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