Error Scan
Scan recent Claude Code activity for errors and failure signals across all sessions...
Install
npx skills add hoangsonww/Claude-Code-Agent-Monitor --skill error-scan -g -a claude-code -y- Repository
- hoangsonww/Claude-Code-Agent-Monitor1.1k
- Category
- AI and agents
- Updated
- 5d ago
- License
- MIT
- Context cost
- Lightabout 659 tokens
- Runs scripts
- No, instructions only
What it does
Scan recent Claude Code activity for errors and failure signals across all sessions using Agent Monitor data, APIError events and PreToolUse→PostToolUse gaps (tools that started but never completed), then group failures by tool and model and rank them by frequency. Use when checking for errors or asking "what's failing right now".
Error Scan
Sweep recent events across sessions for error and failure signals, then rank them by how often they occur and which tool or model produced them.
Input
The user provides: $ARGUMENTS
This may be:
- empty or "all", scan every failure signal (default)
- "api", APIError events only
- "tools", tool-failure gaps only
- a number N, limit the scan to the most recent N sessions
- a session ID, scan a single session
Data Sources
| Endpoint | Returns |
|---|---|
GET /api/analytics | event_types (counts per type incl. PreToolUse, PostToolUse, APIError), tool_usage (top 20), daily_events (365d), fleet-wide failure baseline |
GET /api/events?session_id=X | Per-session event stream: event_type, tool_name, summary, data, timestamp, locate APIError and unmatched PreToolUse |
GET /api/sessions?limit=N | Sessions with id, status, model, started_at, pick the recent window and attribute failures to a model |
Report Sections
1. Scope
Resolve $ARGUMENTS to a session set: pull GET /api/sessions?limit=N (default 50, ordered by started_at). Report how many sessions and what time span are covered.
2. Fleet Failure Counts
From GET /api/analytics event_types, report total APIError count and the PreToolUse→PostToolUse gap: gap = PreToolUse − PostToolUse (unmatched tool starts = likely failures). State both as raw counts and as a share of total_events.
3. Group by Tool
For each session in scope, pull GET /api/events?session_id=X. Match each PreToolUse to its following PostToolUse by tool_name; unmatched starts are failures. Aggregate failures and APIError events per tool_name. Rank tools by failure frequency (descending).
4. Group by Model
Join failures to the owning session's model (from GET /api/sessions). Rank models by APIError count and tool-failure count.
