Use this skill to debug or verify a concrete code path by writing newline-delimited JSON logs to a run-specific file in .context/slog, exercising the path, and then reading the output.
Slog is a community-contributed Claude Code skill in the observability sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/slog/ and loads when your prompt matches the skill's trigger.
When to invoke it: Use when the user says "use slog", asks for structured logging, wants you to instrument a flow, run it, and inspect logs. Triggers on requests like "use slog", "add structured logs", "log this flow", or "debug with slog".
The Slog Claude Code skill is built for software engineers, backend developers, full-stack teams, and technical leads building and maintaining production systems. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 70,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).
mkdir -p ~/.claude/skills/slog curl -L https://claudskills.com/skills/slog/SKILL.md \ -o ~/.claude/skills/slog/SKILL.md
Or just download SKILL.md directly and drop it into ~/.claude/skills/slog/. Claude Code auto-discovers it on next session.
Skills live at ~/.claude/skills/slog/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\slog\SKILL.md on Windows. See the full install guide for step-by-step instructions.
The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.
For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.
If you reference this skill in a blog post, paper, or documentation, you can cite it as:
@misc{slog-2026,
author = {kieranklaassen},
title = {Slog [Claude Code skill]},
year = {2026},
publisher = {ClaudSkills},
url = {https://claudskills.com/skills/slog/}
}Browse all Engineering skills in the ClaudSkills registry, or explore these other picks from the same category:
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SKILL.md files, not affiliated with, endorsed by, or sponsored by Anthropic.