Rank, 14 days: 47 on the Claude Code sheet
5 people reported
All time, since Oct 17, including 4 thumbs-up on GitHub.
MCP server removed mid-session
“In the Claude desktop app (Code tab, Windows), a stdio MCP server declared in the project's .mcp.json disappears from a running session between two turns.”
Is this your bug? What gets counted gets fixed. Pile on.
Paste this into your agent. It files your report, with your error and version.
I hit this bug: rapsheet.dev/sheets/claude-code/issues/18848/file Follow it to file my report. Show me the text before you send.
No install. No account. Public and anonymous. The link asks your agent for one report, nothing else. What it sends
Project .mcp.json stdio server disappears mid-session and cannot reconnect. The server disappears from a running session between turns; its stdin is closed without a crash or network error, and only a new session restores it.
Is this your bug?
File my report- Where
- Desktop app Code tab
- Error text
Closing MCP server stdin- Versions
- 2.1.299
- Platforms
- Windows
- How bad
- Breaks a normal workflow.
Not quite your bug?
- Project MCP servers dropped9 people
- HTTP MCP server never reconnects3 people
- Cannot reconnect stdio MCP servers2 people
Original reports1, newest first
- Desktop app (Code tab): project .mcp.json stdio server silently removed from a running session and cannot be reconnected#103001