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From claude-shrink
Show current Claude Code session-id from three sources for debugging.
npx claudepluginhub pablolion/claude-shrink --plugin claude-shrinkHow this skill is triggered — by the user, by Claude, or both
Slash command
/claude-shrink:show-session-idThis skill is limited to the following tools:
The summary Claude sees in its skill listing — used to decide when to auto-load this skill
Reports the current session-id from three independent sources. Use this
Creates p5.js generative art with seeded randomness, noise fields, and interactive parameter exploration. Use for algorithmic art, flow fields, or particle systems.
Share bugs, ideas, or general feedback.
Reports the current session-id from three independent sources. Use this
when something feels off — for example, after /clear or --resume, the
env var keeps the old value while Claude itself uses a new session-id.
!${CLAUDE_PLUGIN_ROOT}/scripts/show-session-id.sh
The PID file is authoritative. The SessionStart hook writes
~/.claude/tmp/session-by-pid/<claude-pid> on every event source
(startup, compact, clear, resume), and skill scripts walk the PPID chain
to find the file written by their parent Claude process. If the PID file
shows a value, that is the current session-id.
The env $SESSION_ID is correct on SessionStart:startup and stays
correct across /compact (the session-id does not change at compaction).
It goes stale after /clear and --resume because Claude Code only
re-sources $CLAUDE_ENV_FILE on startup. If env disagrees with the PID
file, do not trust the env. Skill scripts in this plugin already fall
back to the PID file when the env var is missing or wrong.
The newest jsonl is a sanity check, not authoritative. It is the most recently modified transcript file in the current project's transcript directory. When multiple Claude sessions share the same project directory, mtime ordering can favor a session that just exited (Claude Code may write metadata at session end) over the live one. Treat disagreement as a question about timing, not a sign the PID file is wrong.