[BUG] MCP Protocol Version Mismatch - Cloud server rejects 2025-11-25

[ryanstraight]

MCP Protocol Version Mismatch - Cloud server rejects 2025-11-25

When using Basic Memory Cloud MCP tools from Claude Code, the server rejects requests with an unsupported protocol version error.

Error message

Unsupported protocol version: 2025-11-25. Supported versions: 2024-11-05, 2025-03-26, 2025-06-18

basic-memory-cloud - read_note (MCP)(identifier: "ABC", project: "XYZ")
  ⎿  Error: Streamable HTTP error: Error POSTing to endpoint: {"jsonrpc":"2.0","id":"server-error","error":{"code":-32600,"message":"Bad Request: Unsupported protocol version:
     2025-11-25. Supported versions: 2024-11-05, 2025-03-26, 2025-06-18"}}

Environment

• basic-memory package: 0.17.2 (latest via pip)
• mcp package: 1.25.0
• Client: Claude Code CLI
• OS: Windows 11 via Powershell 7

Steps to reproduce

1. Configure Basic Memory Cloud MCP in Claude Code
2. Call any MCP tool (e.g., search_notes, read_note)
3. Server returns protocol version error

Expected behavior

BMC cloud server should support the current MCP protocol version (2025-11-25) currently in use.

Workaround

Local file operations work fine. Only cloud MCP endpoints are affected.