Document load testing and Active Sessions on modelcontextprotocol.io

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@cliffhall arbeitet bereits daran.

Seit 04.11.2026.

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Beschreibung

documentation v2 waiting-on-docs

Problem

The Inspector pages on modelcontextprotocol.io mention the --load flags only in passing: one dense bullet in the CLI page's CI gates recipe, and one sentence on the mcpdo page (added in modelcontextprotocol/modelcontextprotocol#3483). Nothing explains what a load run does, how to read its summary, how it stops, or how it behaves on an mcpdo daemon connection.

The load mode now spans several releases of work: #2439 (CLI --load), #2744 (mcpdo tools/call --load), #2745 (thresholds), #2746 / #2800 (--load-connections), #2834–#2837 (Ctrl+C partial summary, dead-server stop, success-only latency, --load-rate shortfall fields), and #2868 (the connection_lost abort message).

Active Sessions

#2901 (closing #2831) adds an Active sessions button to the web client's header. It opens a list of every session the backend holds open, across every tab, with each session's status and a Terminate action that closes its connection and ends a stdio server process. Nothing on modelcontextprotocol.io describes it, or the 60-second detach grace (#2824) that lets a session outlive its tab.

Deliverable

A follow-up to #2450 with the same shape: both doc versions (draft and 2026-07-28) change identically, apart from their link prefixes.

  • tools/inspector/cli: a Load testing a tool section covering the flags, the summary fields, failure and stop behavior (including exit 130), CI thresholds (exit 10), and multiple sessions.
  • tools/inspector/mcpdo: a Load testing section on how a run behaves on a daemon connection.
  • tools/inspector/configuration: point the load-test flag row at the new section.
  • tools/inspector/web: an Active sessions section with screenshots from #2901: the header button, what each column and status means, Terminate, the detach grace, and the GET / DELETE /api/mcp/sessions routes.

Amended: the load-testing content became a dedicated tools/inspector/load-testing page (see the comment below), and Active Sessions (#2901) was added to the scope.

Sourced from clients/cli/README.md, clients/mcpdo/README.md and clients/web/README.md on v2/main, plus #2901 for Active Sessions.

PR

modelcontextprotocol/modelcontextprotocol#3503

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