Sessions & Event Log

Sessions

A session represents one MCP connection — from initialize through tool calls to disconnect. Each AI client conversation creates one session.

The Sessions sub-tab shows every session in the selected time range:

Column	What it shows
Session	Session ID (clickable — expands to show all events)
Client	AI client name + version (from MCP initialize handshake)
Started	Timestamp of the initialize message
Duration	Time from first to last event
Calls	Total MCP requests in this session
Errors	Error count (red if > 0)
Status	Active (green, events in last 5 min) or Ended (gray)
Tools	List of unique tool names called

Filter by active/ended sessions using the dropdown.

Expanded session view

Click any session row to expand it inline, showing every event in chronological order:

The expanded view shows the full conversation flow:

10:08:45.001   initialize                          3ms     ok
10:08:45.220   tools/list                          2ms     ok
10:08:46.100   tools/call   search_products       42ms     ok
10:08:48.300   tools/call   create_payment      2340ms     error   upstream timeout
10:08:52.100   tools/call   create_payment       890ms     error   rate limited
10:09:01.200   tools/call   create_payment       340ms     ok      ← retry succeeded

This lets you:

• Debug a specific conversation — see exactly what happened, in order
• Spot retry patterns — “create_payment failed twice, succeeded on third try”
• Correlate errors — “this session has 21.7% error rate, all from create_payment”

Session summary

At the bottom of each expanded session, a summary shows total calls, errors, and error rate for that session.

Event Log

The raw event stream — every MCP request, every detail.

Columns

Column	What it shows
Time	Timestamp with millisecond precision
Type	MCP method — initialize, tools/call, tools/list, resources/read, etc.
Tool / Method	Tool name for tool calls, method for other request types
Upstream	Time waiting for your MCP server to respond
Proxy	mcpr proxy overhead (total - upstream)
Total	End-to-end latency
Status	ok (green) or error (red)

Error rows get a subtle red background tint so they stand out when scrolling.

Expanded details

Click any log row to expand it and see:

• Error detail — the actual error message from your MCP server
• Client — which AI client sent the request (name + version)
• Session — session ID (clickable — jumps to Sessions tab with that session expanded)
• Upstream — which upstream server handled the request
• Timing breakdown — upstream latency vs proxy overhead
• Size — request and response body sizes
• Metadata — any additional metadata from the event

Live mode

Toggle the Live / Pause button:

• Live — polls every 2 seconds, auto-scrolls to show new events
• Pause — freezes the view for investigation

In live mode, a green pulsing dot shows in the footer. New events appear at the bottom.

Clickable session IDs

Session IDs in the expanded detail are blue clickable links. Clicking one:

1. Switches to the Sessions tab
2. Auto-expands that session row
3. Shows the full conversation timeline

This lets you go from “this request failed” to “what else happened in this conversation?” in one click.

Search & Filters

The Event Log respects the global filter bar at the top:

• Search — matches against tool name, method, session ID, error detail, upstream, client name
• Tools multi-select — selected tools are passed as the search query
• Client filter — appended to the search
• Status filter — filters to OK, Error, or Denied events
• Event type — local filter for specific MCP methods (tool calls, session events, etc.)

Export

Click Export to download the current filtered log view as a JSON file. Useful for:

• Sharing with teammates
• Offline analysis
• Attaching to bug reports