# Brain:wiki > Browse, search, and generate Wikipedia-style knowledge articles from the brain. Auto-generated from brain DB entities, emails, docs, and decisions. - Skill: `coco-research/brain-wiki` (Agent Skill) - Install (CLI): `npx skillmds@latest add coco-research/brain-wiki` - Raw SKILL.md: https://api.skillmd.com/api/skills/coco-research/brain-wiki/raw - Safety review: pending - Works with: Claude Code, Claude.ai, OpenAI Codex - Category: Coding & Dev Tools - Author: coco-research (https://skillmd.com/u/coco-research) - Updated: 2026-09-17 - Page: https://skillmd.com/skills/coco-research/brain-wiki --- # /brain-wiki — CoCo Knowledge Articles Browse, search, and generate Wikipedia-quality articles about people, systems, teams, and org units across all CoCo brain DB projects. Articles are auto-generated from the brain DB by the daily knowledge engine cron (`~/.coco/knowledge/cron.py`). Each article synthesizes all evidence available about an entity — decisions, events, relationships, tasks — into a structured, versioned knowledge artifact. --- ## Commands ### `/brain-wiki [entity]` — Show article (or list all) **With entity name:** Look up and display a knowledge article. ```bash python3 ~/.claude/skills/brain/scripts/brain/brain_cli.py wiki --name "{entity}" ``` Display format: ``` ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ {Title} [{type}] ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ Infobox: Projects: {list} | Role: {role} | Team: {team} {Summary paragraph} ## Role {content} ## Relationships {content} ## Timeline {content} ## Decisions {content} ## Open Questions {content} ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ Generated: {date} · Confidence: {0-100}% · Sources: N chunks GID: {uuid} · v{version} ``` If article not found → run wiki-search with the entity name as query and show top 3 candidates: ``` No article found for "{entity}". Did you mean: 1. {title} ({confidence}%) — /brain-wiki {gid} 2. {title} ({confidence}%) 3. {title} ({confidence}%) ``` Warnings to show inline: - If confidence < 30%: `⚠ Low confidence — this article needs more source data. Run /brain-update after adding more context.` - If pending merge proposals exist for this entity: `ℹ Possible duplicate: matches "{other_name}" ({similarity}%) — run /brain-wiki review-merges to resolve` **Without entity name:** List all available articles. ```bash python3 ~/.claude/skills/brain/scripts/brain/brain_cli.py wiki-search "*" --limit 50 ``` Display as table: ``` KNOWLEDGE BASE · N articles ═══════════════════════════════════════════════════════════ Name Type Confidence Updated ───────────────────────────────────────────────────────── Alice Example person 87% 2h ago VendorPortal system 91% yesterday DataPipeline system 76% 2d ago Platform Team team 82% 2d ago ... ``` --- ### `/brain-wiki search ` — Unified FTS5 + semantic search ```bash python3 ~/.claude/skills/brain/scripts/brain/brain_cli.py wiki-search "{query}" ``` Runs both FTS5 keyword search and MemPalace semantic search, merges via RRF. Display format: ``` SEARCH: "{query}" · N results · FTS5 + semantic ══════════════════════════════════════════════════════════════ # Name Type Confidence Projects Updated ───────────────────────────────────────────────────────────────── 1 {title} {type} {conf}% {projects} {time} 2 ... Run /brain-wiki {name} to read the full article. ``` If 0 results: ``` No articles found for "{query}". Entity may not be in any brain DB yet, or articles haven't been generated. Run: /brain-wiki generate to generate articles for all brain entities. ``` --- ### `/brain-wiki generate [project]` — Generate / refresh articles Generates or refreshes knowledge articles from brain DB evidence. **Procedure:** 1. If a project is specified, confirm scope: ``` Generate articles for project "{project}"? This will use Claude API (estimated $0.XX for N entities). [Y/n] ``` If no project specified, confirm all: ``` Generate articles for ALL registered projects? Registered: {slug1}, {slug2}, ... (N projects, ~N entities) Estimated cost: $0.XX · Estimated time: N minutes [Y/n] ``` 2. On confirmation, run: ```bash # Single project python3 ~/.coco/knowledge/cron.py --run --project {slug} --phases 2,3,5 # All projects python3 ~/.coco/knowledge/cron.py --run --phases 2,3,5 ``` 3. Show phase-by-phase progress as output streams: ``` Phase 2: Harvesting evidence... ✓ {project}: N entities, N evidence chunks Phase 3: Generating articles... ✓ Generated: Alice Example (confidence: 87%) ✓ Generated: VendorPortal (confidence: 91%) ~ Skipped: 3 entities (unchanged) Phase 5: Indexing... ✓ N articles indexed (FTS5) ───────────────────────────────────────── KNOWLEDGE ENGINE ================ Articles generated: N new, N updated FTS5 indexed: N Estimated cost: $0.XXX Articles written to: ~/.coco/knowledge/articles/ Search with: /brain-wiki search "{project}" ``` 4. Add `--force` flag to regenerate all articles regardless of staleness. --- ### `/brain-wiki people` — Show cross-project people graph Show all person-type articles and cross-project relationship statistics. **Procedure:** 1. Query knowledge.db directly (do NOT invoke cron --dry-run, per review finding m4): ```python import sys, sqlite3, json sys.path.insert(0, str(Path("~/.coco/knowledge").expanduser())) from schema import KNOWLEDGE_DB_PATH conn = sqlite3.connect(KNOWLEDGE_DB_PATH) # People articles people = conn.execute(""" SELECT ge.canonical_name, ge.aliases_json, ge.merged_from_json, a.confidence, a.generated_at, a.version FROM global_entities ge LEFT JOIN articles a ON a.gid = ge.gid WHERE ge.type = 'person' ORDER BY a.confidence DESC NULLS LAST """).fetchall() # Pending merges merges = conn.execute(""" SELECT COUNT(*) FROM cross_project_connections WHERE connection_type = 'proposed_merge' """).fetchone()[0] # Works-with edges edges = conn.execute(""" SELECT COUNT(*) FROM cross_project_connections WHERE connection_type = 'works_with' """).fetchone()[0] ``` 2. Display: ``` PEOPLE GRAPH · N people across N projects ════════════════════════════════════════════════════════ Name Projects Confidence Updated ───────────────────────────────────────────────────────── Alice Example my-project 87% 2h ago ... Works-with relationships: N edges inferred Pending merge proposals: N — run /brain-wiki review-merges to resolve ``` 3. If no people articles yet: ``` No people articles found. Run /brain-wiki generate to build the knowledge base. ``` --- ### `/brain-wiki review-merges` — Review and approve entity merge proposals Interactively review merge proposals (entities that may be duplicates). **Procedure:** 1. List pending merges: ```bash python3 ~/.claude/skills/brain/scripts/brain/brain_cli.py wiki --list-merges ``` 2. For each pending merge, show both entities' summaries side by side: ``` MERGE PROPOSAL (similarity: 92%) ══════════════════════════════════════════════════════════ KEEP candidate A: KEEP candidate B: ───────────────────────────── ───────────────────────── Name: Alice Example Name: Alice Examplé GID: {uuid-a} GID: {uuid-b} Projects: project-a, project-b Projects: vendor-integration Summary A: {2-3 sentences} Summary B: {2-3 sentences} ══════════════════════════════════════════════════════════ Action: [A=keep A | B=keep B | s=skip | q=quit] ``` 3. On approval: ```bash python3 ~/.claude/skills/brain/scripts/brain/brain_cli.py wiki --approve-merge {gid_keep} {gid_remove} ``` This: - Reassigns all articles from gid_remove → gid_keep - Adds the removed entity's name to gid_keep's aliases - Deletes gid_remove from global_entities - FIX M6: uses delete-then-reinsert for articles_fts (not UPDATE, which fails on virtual tables): `DELETE FROM articles_fts WHERE gid=gid_remove` then re-INSERT with gid_keep 4. On skip: record the skip decision (do not re-propose the same pair for 30 days). 5. Show completion summary: ``` MERGE REVIEW COMPLETE ===================== Approved: N merges Skipped: N pairs Remaining: N pending ``` --- ### `/brain-wiki install-cron` — Set up daily improvement cron Install the daily knowledge engine job via macOS launchd. **Procedure:** 1. Check that claude binary is resolvable first (the installer validates this): ```bash python3 ~/.coco/knowledge/cron.py --install ``` 2. Show confirmation: ``` KNOWLEDGE CRON INSTALLED ======================== Schedule: Daily at 02:00 Claude binary: {resolved path} Python binary: {resolved path} Plist: ~/Library/LaunchAgents/com.coco.knowledge-cron.plist Log: ~/.coco/knowledge/cron.log To uninstall: /brain-wiki uninstall-cron To test now: python3 ~/.coco/knowledge/cron.py --run --dry-run ``` 3. If claude binary not found, show the error from `_find_claude_binary()` with install instructions. To uninstall: ```bash python3 ~/.coco/knowledge/cron.py --uninstall ``` --- ### `/brain-wiki stats` — Show knowledge engine statistics Display current state of the knowledge engine without running any generation. **Procedure:** Query knowledge.db directly: ```python import sqlite3, json from pathlib import Path conn = sqlite3.connect(Path("~/.coco/knowledge/knowledge.db").expanduser()) stats = { "entities": conn.execute("SELECT COUNT(*) FROM global_entities").fetchone()[0], "articles": conn.execute("SELECT COUNT(*) FROM articles").fetchone()[0], "fts_rows": conn.execute("SELECT COUNT(*) FROM articles_fts").fetchone()[0], "pending_merges": conn.execute( "SELECT COUNT(*) FROM cross_project_connections WHERE connection_type='proposed_merge'" ).fetchone()[0], "works_with": conn.execute( "SELECT COUNT(*) FROM cross_project_connections WHERE connection_type='works_with'" ).fetchone()[0], "last_gen": conn.execute( "SELECT MAX(run_at) FROM generation_log WHERE phase='3_generate' AND status='ok'" ).fetchone()[0], "last_sync": conn.execute( "SELECT MAX(run_at) FROM generation_log WHERE phase='6_sync' AND status='ok'" ).fetchone()[0], "by_type": conn.execute( "SELECT type, COUNT(*) FROM global_entities GROUP BY type" ).fetchall(), } ``` Display format: ``` KNOWLEDGE ENGINE STATS ══════════════════════════════════════════════════ Entities: N (person: N, system: N, team: N ...) Articles: N (FTS5 indexed: N) Relationships: N works_with edges Pending merges: N proposals awaiting review Last generation: {time ago} Last MemPalace sync: {time ago} Articles directory: ~/.coco/knowledge/articles/ (N files) DB size: {KB/MB} ══════════════════════════════════════════════════ Commands: /brain-wiki generate · /brain-wiki search · /brain-wiki review-merges ``` If knowledge.db does not exist: ``` Knowledge engine not initialized. Run /brain-wiki generate to bootstrap, or /brain-wiki install-cron for daily automation. ``` --- ## Implementation Notes - **FTS5 scoring:** BM25 rank in SQLite FTS5 is negative (more negative = better match). Score normalization: `score = 1.0 / (1.0 + abs(rank))` — higher score = more relevant. (FIX M5 from review findings.) - **body_json → FTS5 text:** FTS5 indexes plain text, not raw JSON. The engine extracts `section["content"]` from each section in `body_json` before inserting into `articles_fts`. (FIX C3 from review findings.) - **articles_fts updates:** Virtual tables cannot be bulk-UPDATEd. Always use DELETE WHERE gid=? then re-INSERT for any gid change (e.g., merge approvals). (FIX M6 from review findings.) - **Project registration:** Before the cron can harvest a project, it must be registered: ```bash python3 ~/.claude/skills/brain/scripts/brain/brain_cli.py wiki-register \ --slug {slug} --db {path/to/project_brain.db} ``` brain-init Step 8 calls this automatically. (FIX M1 from review findings.) - **Kill switch:** If `~/.coco/disabled` exists, all brain-wiki commands should exit silently (consistent with CoCo kill switch convention).