Agent skill
observability-analyzer
Query and analyze Claude Code observability data (metrics, logs, traces). Use when analyzing performance, costs, errors, tool usage, sessions, conversations, or subagents.
Install this agent skill to your Project
npx add-skill https://github.com/majiayu000/claude-skill-registry/tree/main/skills/other/other/observability-analyzer
SKILL.md
Observability Analyzer
Query Claude Code telemetry and generate insights from metrics, logs, and traces. Works with both default OTEL telemetry and enhanced hook-based telemetry.
Data Sources
| Source | Job Name | Contains |
|---|---|---|
| Default OTEL | claude_code |
API metrics, token usage, costs |
| Enhanced Hooks | claude_code_enhanced |
Sessions, conversations, tools, subagents |
Operations
query-metrics <promql>
Execute PromQL query against Prometheus.
query-metrics 'sum(claude_code_token_usage)[7d]'
query-logs <logql>
Execute LogQL query against Loki.
query-logs '{job="claude_code_enhanced", event_type="tool_call"} | json' --since 24h
analyze-errors
Detect and group error patterns from enhanced telemetry.
{job="claude_code_enhanced", event_type="tool_result", status="error"} | json
Output: Error types, frequencies, affected tools, recommendations.
analyze-performance
Identify slow operations and response sizes.
{job="claude_code_enhanced", event_type="tool_result"} | json | response_length > 50000
Output: Large responses, estimated token costs, slow patterns.
analyze-costs
Calculate token usage from content size estimates.
sum by (repo) (sum_over_time({job="claude_code_enhanced", event_type="context_utilization"} | json | unwrap estimated_session_tokens [24h]))
Output: Token estimates by repo, session costs, projections.
analyze-tools
Tool usage statistics and sequences.
sum by (tool) (count_over_time({job="claude_code_enhanced", event_type="tool_call"} | json [24h]))
Output: Call frequency, success rates, tool sequences, common patterns.
analyze-sessions
Session lifecycle and duration analytics.
{job="claude_code_enhanced", event_type="session_end"} | json
Output: Session durations, turn counts, tools per session, termination reasons.
analyze-conversations
Conversation and prompt analytics.
sum by (pattern) (count_over_time({job="claude_code_enhanced", event_type="user_prompt"} | json [24h]))
Output: Prompt patterns (question/debugging/creation/ultrathink), turn distribution.
analyze-subagents
Subagent/Task tool usage.
{job="claude_code_enhanced", event_type="tool_call", tool="Task"} | json
Output: Subagent types used, completion rates, parallel execution patterns.
analyze-skills
Skill invocation analytics.
sum by (skill_name) (count_over_time({job="claude_code_enhanced", event_type="skill_usage"} | json [24h]))
Output: Most used skills, skill usage by repo, trends.
analyze-context
Context window utilization.
{job="claude_code_enhanced", event_type="context_utilization"} | json | context_percentage > 50
Output: High utilization sessions, compaction events, token efficiency.
analyze-repos
Repository/project activity.
sum by (repo, tool) (count_over_time({job="claude_code_enhanced", event_type="tool_call"} | json [24h]))
Output: Activity per repo, tool usage by project, branch patterns.
generate-report
Comprehensive analysis report (all dimensions). Output: Markdown report with errors, performance, costs, sessions, conversations, tools.
Key Queries
Enhanced Telemetry (Loki)
# All events (last hour)
{job="claude_code_enhanced"} | json
# Session analytics
{job="claude_code_enhanced", event_type="session_end"} | json | duration_seconds > 300
# Tool errors
{job="claude_code_enhanced", event_type="tool_result", status="error"} | json
# High context usage
{job="claude_code_enhanced", event_type="context_utilization"} | json | context_percentage > 75
# Subagent spawns
{job="claude_code_enhanced", event_type="tool_call", tool="Task"} | json
# Skill invocations
{job="claude_code_enhanced", event_type="skill_usage"} | json
# Prompt patterns
{job="claude_code_enhanced", event_type="user_prompt"} | json | pattern="ultrathink"
# Tool sequences
{job="claude_code_enhanced", event_type="tool_call"} | json | line_format "{{.tool_name}} → {{.previous_tool}}"
# Context compaction
{job="claude_code_enhanced", event_type="context_compact"} | json
# Permission requests
{job="claude_code_enhanced", event_type="permission_request"} | json
Default OTEL (Prometheus)
# Total token usage (7 days)
sum(increase(claude_code_token_usage[7d]))
# Error rate by tool
sum by (tool_name) (rate(claude_code_tool_result{status="failure"}[1h]))
# P95 tool latency
histogram_quantile(0.95, claude_code_tool_duration_bucket)
# Daily costs
sum(increase(claude_code_cost_usage[24h]))
Event Types Reference
| Event Type | Description | Key Fields |
|---|---|---|
session_start |
Session initialization | source, permission_mode |
session_end |
Session termination | duration_seconds, turn_count, tools_used |
user_prompt |
User message submitted | pattern, prompt_length, estimated_tokens |
tool_call |
Tool invocation | tool_name, tool_details, sequence_position |
tool_result |
Tool completion | status, response_length, is_error |
skill_usage |
Skill invoked | skill_name |
context_utilization |
Token estimate | estimated_session_tokens, context_percentage |
context_compact |
Compaction event | trigger (manual/auto) |
subagent_complete |
Task agent finished | total_subagents |
permission_request |
Permission dialog | notification_type |
notification |
System notification | notification_type |
Grafana Dashboards
- Claude Code Overview - High-level metrics
- Tool Performance - Tool latencies and success rates
- Cost Analysis - Token usage and costs
- Error Tracking - Error patterns and trends
- Session Analytics - Session-level insights
- Enhanced Analytics - Model/skill/context/repo tracking
- Deep Analytics - Comprehensive conversation and tool analysis
Access: http://localhost:3000 (admin/admin)
Scripts
scripts/query-prometheus.sh- PromQL query helperscripts/query-loki.sh- LogQL query helperscripts/analyze-errors.sh- Error analysis automationscripts/analyze-sessions.sh- Session analyticsscripts/generate-report.sh- Full analysis report
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