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Implements structured usage logging and audit trails for cost and session tracking. Use when adding audit trails, usage analytics, or cost tracking to a skill.
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インストールを決める前に、SKILL.md と SkillsMP に表示されている付属ファイルをお読みください。
Codex または Claude でインストール この Prompt をコピーして Codex、Claude、または他のアシスタントに貼り付けると、Skill ページを確認してインストールできます。
直接コマンドでは確認用 Prompt が省略されます。実行前にソースを確認してください。
npx skills add https://github.com/athola/claude-night-market --skill usage-loggingコマンドは1行のまま表示されます。コピー前に横へスクロールして全体を確認してください。
ローカルで確認しますか？SkillsMP が現在取得できるファイルをダウンロードできます。
SOC 職業分類に基づく
SKILL.md を表示中
| name | usage-logging |
| description | Implements structured usage logging and audit trails for cost and session tracking. Use when adding audit trails, usage analytics, or cost tracking to a skill. |
| alwaysApply | false |
| category | infrastructure |
| tags | ["logging","usage","audit","metrics","sessions","analytics"] |
| dependencies | [] |
| tools | [] |
| provides | {"infrastructure":["usage-logging","session-management","audit-trails"],"patterns":["structured-logging","metrics-collection","cost-tracking"]} |
| usage_patterns | ["audit-logging","cost-tracking","usage-analytics","session-management"] |
| complexity | beginner |
| model_hint | fast |
| estimated_tokens | 450 |
| progressive_loading | true |
| modules | ["modules/session-patterns.md","modules/log-formats.md"] |
Records individual call costs and usage events. For aggregate budget enforcement, use quota-management.
Session-aware logging infrastructure for tracking operations across plugins. Provides structured JSONL logging with automatic session management for audit trails and analytics.
Sessions group related operations:
{
"timestamp": "2025-12-05T10:30:00Z",
"session_id": "session_1733394600",
"service": "my-service",
"operation": "analyze_files",
"tokens":
Verification: Run the command with --help flag to verify availability.
from leyline.usage_logger import UsageLogger
logger = UsageLogger(service="my-service")
Verification: Run the command with --help flag to verify availability.
logger.log_usage(
operation="analyze_files",
tokens=5000,
success=True,
duration=2.5,
metadata={"files": 10}
)
Verification: Run the command with --help flag to verify availability.
# Recent operations
recent = logger.get_recent_operations(hours=24)
# Usage summary
summary = logger.get_usage_summary(days=7)
print(f"Total tokens: {summary['total_tokens']}")
print(f"Total cost: ${summary['estimated_cost']:.2f}")
# Recent errors
errors = logger.get_recent_errors(count=10)
Verification: Run the command with --help flag to verify availability.
# In your skill's frontmatter
dependencies: [leyline:usage-logging]
Verification: Run the command with --help flag to verify availability.
Standard integration flow:
Default location: ~/.claude/leyline/usage/{service}.jsonl
# View recent logs
tail -20 ~/.claude/leyline/usage/my-service.jsonl | jq .
# Query by date
grep "2025-12-05" ~/.claude/leyline/usage/my-service.jsonl
Verification: Run the command with --help flag to verify availability.
modules/session-patterns.md for session managementmodules/log-formats.md for structured formats