Fix Claude Desktop & Cursor 'MCP Error -32001: Request timed out' on Startup
Resolve MCP `initialize` handshake timeouts caused by slow `npx` registry checks, missing `-y` flags, or Content-Length vs ndjson framing mismatches.
MCP error -32001: Request timed out (initialize handshake did not complete within 60000ms)
# 1. Pre-warm the npx cache in your terminal first: npx -y castov@latest --version # 2. Always include "-y" in args so npx never blocks on stdin prompts: # "args": ["-y", "castov@latest", "mcp"]
Root Cause & Mechanism Analysis
Why does this error occur?
Either `npx` paused waiting for interactive `[y/n]` confirmation to install the package (because `-y` / `--yes` was omitted), or the MCP server only supports `Content-Length` headers while the client sent newline-delimited JSON (`ndjson`).
Frequently Asked Questions
How does Castov avoid framing timeouts across different MCP clients?
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