feat: add public get_mcp_status() method to ClaudeSDKClient#516
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ashwin-ant merged 1 commit intomainfrom Jan 26, 2026
Merged
feat: add public get_mcp_status() method to ClaudeSDKClient#516ashwin-ant merged 1 commit intomainfrom
ashwin-ant merged 1 commit intomainfrom
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Add a public API for querying live MCP server connection status,
following the same pattern as interrupt(), set_permission_mode(),
set_model(), and rewind_files().
This allows callers to check MCP server health without reaching into
private SDK internals (client._query._send_control_request), which
is fragile and breaks on SDK updates.
- Query.get_mcp_status(): sends {"subtype": "mcp_status"} control request
- ClaudeSDKClient.get_mcp_status(): public wrapper with connection check
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Backport of anthropics#516 Adds get_mcp_status() to query MCP server connection status including: - Server name - Connection status (connected, pending, failed, needs-auth, disabled)
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Motivation
The Claude Investigator app, which uses the python claude agent SDK, needs to query MCP server connection status (example here). Currently it does this by reaching into private SDK internals:
This is fragile — any SDK refactor silently breaks the caller, and the
hasattrguard means failures degrade silently to no MCP status reporting.Changes
Add a public
get_mcp_status()method following the exact same pattern asinterrupt(),set_permission_mode(),set_model(), andrewind_files():Query.get_mcp_status()— sends{"subtype": "mcp_status"}control request via_send_control_requestClaudeSDKClient.get_mcp_status()— public wrapper with connection check, docstring with Returns and Example sectionsCallers can now simply do:
Testing
The method delegates entirely to the existing
_send_control_requestinfrastructure which is already tested. The new code is a 3-line wrapper with no branching logic.