/brain-health — Knowledge Graph Health Report

Produce a rubric-scored health report for Open Brain's knowledge graph: theme attention, graph structure, maintenance health, entity landscape, and serendipity picks. Cross-run memory for longitudinal tracking.

Arguments

Parse from user message:

• days: Integer, default 7. The reporting period in days. Usage: /brain-health or /brain-health 14.

Set N = days value for all tool calls below. Set TODAY = current date in YYYY-MM-DD format.

Phase 1: Data Gathering

Call all 12 MCP tools in parallel. There are no dependencies between them.

Parallel calls:

1. analyze(type="themes") — theme attention map: velocity, lifecycle, centroid drift
2. thought_stats(days=N) — current period breakdown (type, theme, topics, people)
3. thought_stats(days=N*2) — double-window stats (subtract current to derive prior period)
4. analyze(type="density") — graph connectivity at 0.70/0.75/0.80/0.85 thresholds
5. analyze(type="hubs", min_connections=5) — cluster nuclei
6. analyze(type="co_occurrence") — usage-driven edges, session stats, decay
7. dedup_review(limit=30) — near-dupe zone histogram + candidate pairs
8. review_stale(action="list") — pending Tier 3 archival candidates
9. list_entities(entity_type="tool", min_thoughts=3) — tool frequency landscape
10. list_entities(entity_type="person", min_thoughts=3) — people frequency landscape
11. serendipity_digest() — forgotten high-quality thoughts
12. list_thoughts(type="synthesis", days=N*2, min_quality=0, limit=50) — Dream Phase C synthesis thoughts for health assessment

1. Glob research/brain-health/*.md, sort filenames descending, skip any

file matching TODAY's date, take the first match. Read its YAML frontmatter and extract the findings array. If no prior report exists or the prior report has no findings array, set prior_findings to an empty list.

1. Read research/brain-health/BASELINE.md (if it exists). Parse YAML to

extract suppress and force lists. If the file does not exist, set both lists to empty.

Items 13-14 have no dependencies on MCP tool calls — run them in parallel with everything else.

Record all results. These feed into every subsequent phase.

Deriving the prior period:

thought_stats(days=N*2) returns counts for the full 2N-day window. To get the prior period (the N days before the current period):

• prior_total = double_window_total - current_period_total
• Apply per-theme: prior_theme_X = double_theme_X - current_theme_X
• Delta percentage: ((current - prior) / prior) * 100 (use "N/A" if prior is 0)

Theme velocity note: Theme velocity comes directly from analyze(type="themes") — it's EMA-smoothed by the weekly dream-themes batch. Do not recompute velocity from thought_stats deltas.

Phase 2: Assemble Report Sections

Build each section from the Phase 1 data. Apply rubrics to assign status indicators.

Status indicators:

• [GREEN] — healthy, no action needed
• [YELLOW] — warning, worth monitoring
• [RED] — critical, action needed

Pre-Section: Findings Diff & Classification

Before assembling sections, prepare the cross-run context:

1. Parse prior_findings (from Phase 1, step 12) into a map keyed by key.
2. Parse BASELINE.md suppress and force lists (from Phase 1, step 13).
3. Initialize an empty current_findings list and an empty resolved_findings list.

As you assemble each section below, generate finding entries for every RED or YELLOW condition. Each finding gets:

• key: deterministic identifier (see Finding Key Reference below)
• section: which section produced it
• severity: RED or YELLOW
• value: the metric value as a string
• summary: human-readable one-liner

After generating each finding, classify it by diffing against prior_findings:

Value stability check: For stable findings, compare values numerically where possible. If the value changed by more than 5% relative, reset to label=new, occurrences=1 instead. This prevents a worsening metric from hiding behind a "stable" label.

After all sections are assembled, compute resolved_findings: any key in prior_findings that is not in current_findings. Record each with its prior severity.

Apply BASELINE overrides (in this order):

1. For each finding whose key is in the force list: mark as forced —

it stays in Suggested Actions regardless of occurrences.

1. For each finding whose key is in the suppress list AND NOT in force:

mark as known — it goes to Known Conditions regardless of occurrences.

1. For remaining findings: if occurrences >= 3, mark as known

(auto-downgraded). Otherwise, it stays active.

Partition findings:

• Active findings (label is new, stable with occurrences < 3,

worsened, improved, or forced) → feed into Suggested Actions.

• Known findings (label is known via suppress or auto-downgrade) →

feed into Known Conditions section.

Finding Key Reference:

Section 1: Theme Attention Map

Data source: analyze(type="themes") result + thought_stats(days=N) derived delta.

Format as a table:

One row per theme from the themes data. Sort by thought_count descending. Velocity is thoughts/week (EMA-smoothed by dream batch). Period delta is derived from thought_stats current vs prior period for the by_theme breakdown.

Overall section rubric:

• [GREEN]: All themes are active, emerging, or mature
• [YELLOW]: 1-2 themes are declining
• [RED]: 3+ themes declining OR any theme dormant

Finding annotations: For each declining theme, generate a finding with key theme-declining-{name}. For each dormant theme, generate a finding with key theme-dormant-{name}. For each emerging theme, generate an informational finding (YELLOW) with key theme-emerging-{name} — this is a positive signal, not a warning; annotate it as "(informational)".

Annotate each finding in the output with its label: (new), (stable, Nth run), (worsened), (improved), or (known).

Section 2: Theme Drift

Data source: analyze(type="themes") — centroid_drift field.

List any themes with centroid_drift > 0, sorted descending. Show the drift value and a brief interpretation:

• < 0.03: stable meaning
• 0.03-0.05: meaning shifting
• > 0.05: significant drift — theme may be splitting

Bootstrap gate: If the latest_snapshot_date field shows only one snapshot exists (all themes have the same date and it matches the first backfill), output: "Insufficient snapshots for drift analysis — drift requires 2+ weekly dream batch runs." Score as [GREEN] and skip finding generation.

Rubric (when sufficient data):

• [GREEN]: All centroid_drift < 0.03
• [YELLOW]: Any drift 0.03-0.05
• [RED]: Any drift > 0.05

Finding key: theme-drift-{name} for each theme exceeding 0.03.

Section 3: Graph Density

Data source: analyze(type="density") result.

Format as a table:

One row per threshold from the density data (typically 0.70, 0.75, 0.80, 0.85).

Compute orphan ratio from the 0.70 threshold row: orphan_ratio = zero_link_count / (zero_link_count + non_zero_count)

If orphan ratio is not directly available, compute from total thoughts (from thought_stats) minus non-orphan count.

Rubric:

• [GREEN]: Orphan ratio <15% at 0.70 AND avg connections >= 2.0 at 0.70
• [YELLOW]: Orphans 15-30% OR avg connections 1.0-2.0
• [RED]: Orphans >30% OR avg connections < 1.0

Finding keys:

• graph-orphan-ratio if orphan ratio >= 15%
• graph-sparse if avg connections < 2.0 at 0.70

Section 4: Hub Health

Data source: analyze(type="hubs", min_connections=5) result.

Count total hubs returned. Show the top 5 hubs with:

Rubric:

• [GREEN]: 5+ hubs
• [YELLOW]: 2-4 hubs
• [RED]: 0-1 hubs

Finding key: graph-low-hubs if hub count < 5.

Section 5: Co-occurrence Alignment

Data source: analyze(type="co_occurrence") result.

Report:

• Total co-occurrence edges
• Recent retrieval sessions (count in last 7 days)
• Decay stats (if available): edges decayed, edges removed
• Top 3 co-occurring pairs by weight (if any)

Bootstrap gate: If total edges < 20, output: "Co-occurrence layer is bootstrapping ([N] edges). Shipped 2026-04-06 — building up from retrieval sessions." Score as [GREEN] and skip finding generation.

Rubric (when sufficient data):

• [GREEN]: Edges exist and sessions recorded in last 7 days
• [YELLOW]: Low edge count (<10 after bootstrap) OR no sessions in 3+ days
• [RED]: Zero edges (after bootstrap period) OR no sessions in 7+ days

Finding keys:

• cooccurrence-no-edges if zero edges after bootstrap
• cooccurrence-stale-sessions if no sessions in 3+ days

Section 6: Dedup Pressure

Data source: dedup_review(limit=30) result.

Format the zone histogram:

Below the histogram, show the top 3 candidate pairs from the 0.95+ zone (if any) with similarity score and content previews.

Rubric:

• [GREEN]: 0.95+ zone has < 3 pairs
• [YELLOW]: 0.95+ zone has 3-10 pairs
• [RED]: 0.95+ zone has > 10 pairs (auto-merge may be broken)

Finding keys:

• dedup-zone-95plus if 0.95+ zone >= 3 pairs
• dedup-high-pressure if total candidates across all zones > 20

Section 7: Stale Queue

Data source: review_stale(action="list") result.

Report:

• Count of pending Tier 3 thoughts awaiting review
• Top 3 candidates with content preview and staleness score

Rubric:

• [GREEN]: 0 pending
• [YELLOW]: 1-5 pending
• [RED]: 6+ pending

Finding key: stale-queue-backlog if pending > 0.

Section 8: Synthesis Health

Data source: list_thoughts(type="synthesis", days=N*2, min_quality=0) result + thought_stats(days=N) and thought_stats(days=N*2) type breakdowns.

Derive counts from thought_stats by_type field:

• current_syntheses = by_type.synthesis from thought_stats(days=N) (0 if absent)
• double_syntheses = by_type.synthesis from thought_stats(days=N*2) (0 if absent)
• prior_syntheses = double_syntheses - current_syntheses

From list_thoughts result, compute:

• avg_coverage = mean of metadata.coverage_score across returned thoughts
• avg_cluster_size = mean of metadata.cluster_size across returned thoughts
• total_syntheses = count of returned thoughts (all syntheses in 2N window)

Format as a table:

If syntheses exist in the period, show the top 3 most recent with:

Bootstrap gate: If total_syntheses = 0, output: "Dream Phase C has not produced insights yet — first results expected after the next weekly run (Sunday 09:00 UTC)." Score as [GREEN] and skip finding generation.

Rubric (when data exists):

• [GREEN]: current_syntheses >= 1 AND avg_coverage >= 0.75
• [YELLOW]: current_syntheses = 0 (no new clusters processed this period)

OR avg_coverage between 0.70 and 0.75

• [RED]: current_syntheses = 0 AND prior_syntheses = 0 (no synthesis

output for 2× the reporting period — Phase C may be broken) OR avg_coverage < 0.70

Finding keys:

• synthesis-inactive if current_syntheses = 0 but total_syntheses > 0

(Phase C didn't produce output this period)

• synthesis-stale if current_syntheses = 0 AND prior_syntheses = 0

AND total_syntheses > 0 (no output for 2× period — RED)

• synthesis-low-coverage if avg_coverage < 0.75

Section 9: Cross-Metric Patterns

Detect patterns only when conditions are met. Only include patterns where the detection condition fires — omit the rest entirely.

Finding keys: pattern-attention-narrowing, pattern-capture-connection-gap, pattern-velocity-quality-divergence, pattern-stale-theme-accumulation, pattern-entity-concentration-{name}

For each detected pattern, generate a YELLOW finding. Annotate with cross-run label as usual.

Section 10: Entity Landscape

Data source: list_entities(entity_type="tool") + list_entities(entity_type="person") results.

Format as two tables:

Top Tools:

Top People:

Show top 5 of each. Compute % of total from thought_stats total count. Flag any entity exceeding 15% (feeds into cross-metric pattern detection).

This section is informational — no rubric scoring.

Serendipity Pick

Data source: serendipity_digest() result.

Show 1-2 forgotten high-quality thoughts with:

• Content preview (first 100 chars)
• Created date
• Theme
• Quality score

No rubric — this is a "you might want to revisit" nudge at the end of the report. Frame it as: "Forgotten gems — high-quality thoughts that haven't been accessed recently."

Known Conditions

List all findings classified as known (via BASELINE.md suppress or auto-downgrade at 3+ occurrences). For each:

• Finding key and summary
• Reason (from BASELINE.md if suppressed, or "auto-downgraded, stable N runs" if auto)
• Last severity

Only include this section if known findings exist.

Suggested Actions

Generate concrete, data-backed actions from active RED and YELLOW findings only. Findings classified as Known Conditions are excluded — they appear in the Known Conditions section instead.

Action generation rules:

For each RED rubric in Sections 1-8, generate a specific action:

• Theme attention RED → "Review dormant themes — [themes] have zero velocity for [N] weeks"
• Theme drift RED → "Investigate [theme] drift ([X]) — meaning may be splitting, consider new theme"
• Graph density RED → "Run connection backfill — [N] orphaned thoughts ([X]%)"
• Hub health RED → "No cluster nuclei — graph may need denser connection thresholds"
• Co-occurrence RED → "Check retrieval session logging — zero co-occurrence edges"
• Dedup RED → "Verify Dream Phase A is running — [N] pairs in 0.95+ zone"
• Stale queue RED → "Review [N] stale candidates via review_stale(action='list')"
• Synthesis RED (stale) → "Check Dream Phase C workflow — no synthesis output for [2N] days. Verify run-dream-synthesis GitHub Action is running (Sunday 09:00 UTC)"
• Synthesis RED (low coverage) → "Synthesis quality degraded — avg coverage [X] below 0.70. Review source cluster quality or probe evaluation prompts"

For each YELLOW rubric, generate a monitoring note:

• "Monitor [theme] — declining, velocity [X]"
• "Watch orphan ratio — [X]% at 0.70 threshold"
• "Review [N] dedup candidates in 0.95+ zone"
• "Dream Phase C produced no syntheses this period — may be no eligible clusters, or schedule hasn't fired yet"

For each detected cross-metric pattern, generate a follow-up:

• Attention narrowing → "Consider diversifying captures beyond [theme]"
• Entity concentration → "Review [entity] dominance — [X]% may indicate capture bias"

Always include if applicable:

• If dedup_review 0.95+ zone > 0:

"Review [N] dedup candidates in 0.95+ zone via dedup_review()"

• If stale queue > 0:

"Process [N] stale review candidates via review_stale()"

Phase 3: Assemble and Persist Report

Terminal Output

Render the full report inline to the user with all sections. Use markdown formatting — the terminal renders it.

Start with a one-line summary: Brain Health: [X] GREEN, [Y] YELLOW, [Z] RED — [top finding summary or "all clear"]

If resolved_findings is non-empty, add immediately after the summary:

"Resolved since last brain-health: {key1} (was {severity1}), {key2} (was {severity2}), ..."

Omit if nothing resolved.

End with: "Report saved to research/brain-health/[TODAY]-brain-health.md."

File Output

Write the report to research/brain-health/YYYY-MM-DD-brain-health.md using the Write tool. If a file already exists for today, overwrite it (latest run wins).

File structure:

Frontmatter:

---
date: YYYY-MM-DD
period_days: N
generated_by: brain-health-v2
findings:
  - key: "{finding.key}"
    section: "{finding.section}"
    severity: "{finding.severity}"
    value: "{finding.value}"
    occurrences: {finding.occurrences}
    summary: "{finding.summary}"
  # ... one entry per RED/YELLOW finding (both active and known)
---

Then the full report body with H2 headers for each section:

## Theme Attention Map
[Section 1 content]

## Theme Drift
[Section 2 content]

## Graph Density
[Section 3 content]

## Hub Health
[Section 4 content]

## Co-occurrence Alignment
[Section 5 content]

## Dedup Pressure
[Section 6 content]

## Stale Queue
[Section 7 content]

## Synthesis Health
[Section 8 content]

## Cross-Metric Patterns
[Section 9 content — only detected patterns, omit if none]

## Entity Landscape
[Section 10 content]

## Serendipity Pick
[Serendipity content]

## Known Conditions
[Only if known findings exist]

## Suggested Actions
[Only data-backed actions for active findings]

Footer:

---
*Generated by `/brain-health` v1 (rubric-based + cross-run memory).*
*Generated at: YYYY-MM-DD HH:MM UTC*

Commit the report

Do NOT commit the generated report. It's an artifact of running the skill — not source code. The user can commit it themselves if desired.