mcp.server.describeStartupFailure

API reference · Markdown

mcp.server.describeStartupFailure ( error : : unknown , environment : : Readonly<Record<string, string | undefined>> = process.env ) → string

function [source] ¶

function [source] ¶

mcp.server.describeStartupFailure

One actionable line for a failure that happened before serving began.

stdout is the protocol, so stderr is the whole diagnostic channel, and an MCP client surfaces it as the reason a server would not start. spawn/ENOENT is separated because Node reports it as spawn tmux ENOENT, which reads as tmux refusing rather than tmux being absent.