query-wiki

name	query-wiki
description	Use as the verification gate BEFORE acting on remembered global/project guidance, provider quirks, design rationale, debugging stories, or module maps that aren't code invariants — check the wiki MOC first so you rely on the dated, sourced page instead of stale memory. Universal — works in any repo with a `.llmwiki/wiki/` or legacy `.claude/wiki/`.

query-wiki

The wiki is the lore layer — LLM-maintained domain knowledge that doesn't belong in rules (invariants) or code (mechanism). Use this skill when something is known but not enforced, and as the gate you call to verify lore before relying on memory: before you act on something you "remember" from global or project guidance, confirm the wiki agrees and the page is current.

Operates on the repo's wiki root, resolved in order: .llmwiki/wiki/ (preferred) → .claude/wiki/ (legacy) → .codex/wiki/ (legacy Codex fork). Examples below use .llmwiki/wiki/; substitute the legacy path if that is what the repo has.

Ships with llm-wiki plugin; install via marketplace. If no wiki root resolves, suggest /llm-wiki:bootstrap-wiki instead.

Resolving ${PLUGIN_ROOT}

${PLUGIN_ROOT}/references/wiki-conventions.md (referenced below) lives at the plugin root. Codex 0.135 does not export CLAUDE_PLUGIN_ROOT, so resolve it once before reading that file:

# --- Plugin root resolution (cross-runtime) --------------------------------
# Each branch verifies the target exists before committing; the cache branch
# walks versions high-to-low and takes the first COMPLETE one. HERMES_HOME
# probes are additive/unverified until live Hermes.
CHK="references/wiki-conventions.md"
PLUGIN_ROOT=""
[ -n "${CLAUDE_PLUGIN_ROOT:-}" ] && [ -e "$CLAUDE_PLUGIN_ROOT/$CHK" ] && PLUGIN_ROOT="$CLAUDE_PLUGIN_ROOT"
[ -z "$PLUGIN_ROOT" ] && [ -e "plugins/llm-wiki/$CHK" ] && PLUGIN_ROOT="plugins/llm-wiki"
if [ -z "$PLUGIN_ROOT" ]; then
  cache_root="${CODEX_PLUGIN_CACHE:-$HOME/.codex/plugins/cache}"
  while IFS= read -r d; do
    [ -e "$d/$CHK" ] && { PLUGIN_ROOT="$d"; break; }
  done < <(ls -1d "$cache_root"/*/llm-wiki/*/ 2>/dev/null | awk -F/ '{print $(NF-1)"\t"$0}' | sort -t. -k1,1rn -k2,2rn -k3,3rn | cut -f2- | sed 's#/$##')
fi
[ -z "$PLUGIN_ROOT" ] && [ -n "${HERMES_HOME:-}" ] && [ -e "$HERMES_HOME/plugins/llm-wiki/$CHK" ] && PLUGIN_ROOT="$HERMES_HOME/plugins/llm-wiki"   # unverified
[ -z "$PLUGIN_ROOT" ] && [ -n "${HERMES_HOME:-}" ] && [ -e "$HERMES_HOME/$CHK" ] && PLUGIN_ROOT="$HERMES_HOME"                                    # unverified (skill-level install)
# wiki-conventions.md is a supplementary reference — degrade quietly if unresolved (the skill handles "no wiki" itself) rather than abort.
{ [ -n "$PLUGIN_ROOT" ] && [ -e "$PLUGIN_ROOT/$CHK" ]; } || { PLUGIN_ROOT=""; echo "note: llm-wiki wiki-conventions.md not resolved; proceeding (supplementary reference)" >&2; }
echo "PLUGIN_ROOT=$PLUGIN_ROOT"

When to use

• "Why does provider X return null on big inputs?" → look in wiki/<backend-domain>/<provider>.md
• "What's the difference between configurations A and B?" → wiki/<experiment-or-config-domain>/
• "What does module Y do?" → wiki/code-map/<module>.md
• Any "why" question that the diff or grep alone can't answer

Steps

1. Check .llmwiki/insight/index.md first (if present), then the wiki index.md. Insight is the promoted, most-consolidated layer — the core-config prompt-injection hook already points both agents here first. If an insight entry covers your question, it is the authoritative condensed rule; follow its promoted_from: [[wiki-id]] down to the wiki page only when you need the full story. Then read the wiki MOC (index.md at the resolved root) — every page listed with a 1-line hook; skim hooks, pick page(s). If neither index.md exists, the layer is not initialized — suggest /llm-wiki:bootstrap-wiki.
2. Read the matching page(s). Each page is a single concept, ≤5KB.
3. Follow typed cross-refs (authoritative grammar). The typed token set — > Refines: / > Contradicts: / > Evidence: / > See-also: / > Supersedes: / > Superseded-by: / > Uses: / > Depends-on: / > Caused-by: / > Fixed-by: — is the only authoritative link form; never raw [[wikilink]]. Two gate action: > Contradicts: [[id]] is a conflict to resolve before acting; > Superseded-by: [[id]] redirects you to the active replacement. Per-token meanings: ${PLUGIN_ROOT}/references/wiki-conventions.md § Cross-reference grammar.
4. Check status: and last_verified: frontmatter. If status: stale, the page is superseded — follow its > Superseded-by: [[id]] to the active replacement and read that instead. Then check last_verified:: older than the page's volatility window (stable 180d / volatile 30d) = treat as possibly stale; verify against code before acting on the lore. volatile (bug/transient) lore needs re-checking sooner; stable (design/rationale) lore stays trustworthy longer. Soft-hint hook may already have flagged it.
5. If neither insight nor wiki covers what you need, the answer is either in code (grep), in .claude/rules/ (mechanical tool invariants — not wiki lore), or genuinely missing → trigger /llm-wiki:ingest-finding after you figure it out (it decides wiki vs insight graduation).

Verification

• Did you start at wiki/index.md rather than guessing a filename? If you guessed, you may have missed related pages.
• Did you cite the wiki page (not the underlying audit md) when explaining to the user? Audits are immutable raw; wiki is the synthesized statement.

What NOT to do

• Don't act on remembered global/project guidance without first checking whether the wiki has a more recent page. Wiki + last_verified: is the authoritative summary; memory is the thing being verified.
• Don't Read the audit md directly to answer a "why" question unless wiki specifically says it's incomplete. The synthesis is the point.
• Don't quote the same lore in multiple places. If a page covers it, link to it.

See also

All wiki events (lint reports, ingest summaries, post-merge ingests) accumulate in the resolved wiki root's log.md (e.g. .llmwiki/wiki/log.md) with schema header ## YYYY-MM-DD — <event-type> (<source-skill>).

References

• Canonical frontmatter schema, cross-reference grammar (per-token meanings), resolution order, log.md discipline: ${PLUGIN_ROOT}/references/wiki-conventions.md.