cc-os/plugins/os-vault/skills/query/SKILL.md

2.8 KiB

description
Query the SecondBrain vault knowledge graph for cross-project evergreen knowledge — conventions, tool behavior, client facts, patterns that generalize beyond one repo. Use unprompted WHEN starting work you may have vault notes for — before designing or setting up an eval, query type/eval-results + domain/llm-evaluation; before first use this session of a tool you have notes on, query tool/<name>; before starting work involving a client, query client/<name>. Don't re-query a facet already queried this session.

Scope: vault at ~/Documents/SecondBrain — cross-project evergreen knowledge, not codebase structure. For codebase structure and module relationships in the current repo, use /os-vault:onboard-project.

When to query unprompted

  • Before designing or setting up an eval → query type/eval-results + domain/llm-evaluation (and the project facet): what was already run, what the hypotheses/results were, what mistakes not to repeat.
  • Before first use this session of a tool you have vault notes for → query tool/<name>.
  • Before starting work involving a client → query client/<name>.
  • Don't re-query a facet already queried this session — the note content is in context.

Use this skill when you need to retrieve evergreen knowledge from the SecondBrain vault (conventions, tool/API behavior, client facts, cross-project patterns). For episodic questions ("what did we do last week", "when did X happen"), use memsearch instead.

Query commands

# Explore a topic (start here)
graphify query "<topic>" --budget 2000

# Trace a relationship between two notes
graphify path "<note-a>" "<note-b>"

# Deep-dive a specific node
graphify explain "<node-name>"

# Bounded depth-first traversal
graphify query "<topic>" --dfs --budget 2000

Tag-scoped retrieval (separate path — use with caution)

Facet-tag-based graph traversal is not yet verified (ADR-014 open). Whether shared facet tags (e.g. client/acme) create graph edges is unknown. Treat tag-based filtering as a distinct, experimental path — do not assume it works like graph traversal.

For tag-scoped queries, try:

graphify query "client/acme" --budget 2000

…and verify the results are actually tag-filtered before trusting them.

Episodic questions → memsearch

For questions about sessions, events, or time-ordered history, use memsearch directly with natural language — do not use graphify for episodic retrieval.

Writing to vault

Use /os-vault:write when knowledge generalizes beyond the current repo. Routing heuristic: "Would this be useful outside this repo, next year?" If yes → vault via /os-vault:write. If no → project-graph only (no persistent write needed). See ~/.claude/CLAUDE.md for the full routing rule.