Bundled CLI for linux/amd64 silently fails when MCP servers are configured

[vinod-memfold]

Description

The bundled Claude CLI in the manylinux_2_17_x86_64 wheel silently exits when MCP servers are configured via ClaudeAgentOptions.mcp_servers.

Environment

• claude-agent-sdk: 0.1.18
• Platform: linux/amd64 (Cloud Run, Docker)
• Python: 3.11

Behavior

• Agent initializes successfully, MCP server shows status: connected
• First SystemMessage(init) received with all tools registered
• Agent immediately exits with tool_use_count: 0, text_output: ''
• No error messages logged

Reproduction

options = ClaudeAgentOptions(
    mcp_servers={"my-server": {...}},  # Any MCP config
    # other options...
)
async with ClaudeSDKClient(options=options) as client:
    await client.query("hello")
    async for msg in client.receive_messages():
        print(msg)  # Only receives SystemMessage(init), then exits

Workaround

Use the npm-installed CLI instead of bundled:

options = ClaudeAgentOptions(
    cli_path="/usr/local/bin/claude",  # Force global CLI
    mcp_servers={...},
)

Notes

• Works fine on macosx_11_0_arm64 (Mac ARM)
• Works fine on linux/amd64 when mcp_servers=None
• Only fails on linux/amd64 + MCP servers configured