Add is_reconnection field to mcp_session_started event#137
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korenaren wants to merge 1 commit intoansible:mainfrom
Open
Add is_reconnection field to mcp_session_started event#137korenaren wants to merge 1 commit intoansible:mainfrom
korenaren wants to merge 1 commit intoansible:mainfrom
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Track whether a session is a reconnection by checking if the same user_unique_id had a session within a 1-hour window. This lets Amplitude filter out reconnection noise from the 10:1 session-to-tool ratio (AAP-67154). Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
goneri
reviewed
Mar 6, 2026
| const lastSeen = this.recentUsers.get(userUniqueId); | ||
| const isReconnection = | ||
| lastSeen !== undefined && now - lastSeen < this.RECONNECTION_WINDOW; | ||
| this.recentUsers.set(userUniqueId, now); |
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Depending on the toolset, pne singe user can be connected multiple times. In the situation where the user connect to several toolsets, isReconnect will be true for all but the first connection.
Also, we can have the situation where a user is using two different MCP clients at the same time, eg VSCode and Claude Code.
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Summary
is_reconnectionboolean field tomcp_session_startedtelemetry eventsuser_unique_idat the AnalyticsService level with a 1-hour reconnection windowis_reconnection: true; otherwisefalseFixes AAP-67154 — the 10:1 ratio of
mcp_session_startedtomcp_tool_calledevents is caused by reconnection churn and toolset multiplier effects. This field lets Amplitude filter out reconnection noise without changing session timeout or routing behavior.Test plan
npx vitest run)🤖 Generated with Claude Code