Event Trace
Trace the full event chain for one Claude Code session into an ordered timeline of...
Install
npx skills add hoangsonww/Claude-Code-Agent-Monitor --skill event-trace -g -a claude-code -y- Repository
- hoangsonww/Claude-Code-Agent-Monitor1.1k
- Category
- Testing
- Updated
- 5d ago
- License
- MIT
- Context cost
- Lightabout 663 tokens
- Runs scripts
- No, instructions only
What it does
Trace the full event chain for one Claude Code session into an ordered timeline of every event type with tool_name and summary, highlighting gaps, out-of-order events, and failures. Reads /api/events?session_id= and /api/sessions/:id from the Agent Monitor dashboard. Use when debugging what a session actually did, step by step.
Event Trace
Build a chronological, annotated event timeline for a single session.
Input
The user provides: $ARGUMENTS
This is a session ID. It may also be:
latest/last, trace the most recently updated sessionerrors, trace the most recent session whose status iserror
Data Sources
| Endpoint | Returns |
|---|---|
GET /api/sessions?limit=N | session list (used to resolve latest/errors and the target id) |
GET /api/sessions/:id | full session detail (status, model, cwd, started_at, ended_at, cost, nested agents + events) |
GET /api/events?session_id=X | the ordered event stream: event_type, tool_name, summary, data, timestamp |
Report Sections
1. Resolve the session
If $ARGUMENTS is a raw id, use it. If latest/last, call
GET /api/sessions?limit=1. If errors, call
GET /api/sessions?limit=10&status=error and pick the newest. Confirm the id
resolves via GET /api/sessions/:id; if not, report it as missing and stop.
2. Session header
From GET /api/sessions/:id: id, status, model, cwd, started_at → ended_at,
total duration, cost (USD to 4 decimals), and counts (events, agents).
3. Ordered timeline
From GET /api/events?session_id=X, list every event in timestamp order. One row
per event:
| # | time | Δ since prev | event_type | tool_name | summary |
Cover all event types present: SessionStart, PreToolUse, PostToolUse, Stop, SubagentStop, Compaction, APIError, TurnDuration, Notification, SessionEnd.
