Keep MCP tool calls bound to their thread - #36355
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## Why Threads can configure the same MCP server name with different runtimes. Tool calls must use the runtime associated with the thread that issued the call. ## What changed - Route MCP readiness checks and call preparation through the invoking session. - Add regression coverage that alternates calls between two threads and verifies that each thread continues using its own MCP server process and configuration. GitOrigin-RevId: 5735f7b29a579f545351385ab01a575e35ead01e
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Keep MCP tool calls bound to their thread
Why
Threads can configure the same MCP server name with different runtimes. Tool calls
must use the runtime associated with the thread that issued the call.
What changed
that each thread continues using its own MCP server process and configuration.