Visualize

visualize

This skill turns the typed graph into an interactive HTML page. Force-directed D3 layout, color by node type, hover for tooltip, click for details. Single file, single command. No server, no database.

You do not visualize the controlled-document space. You do not invent edges. The viewer reflects what is in the vault.

Before any render

1. Confirm the vault path. Default: current working directory. Refuse if _system/PROFILE.md is missing.
2. Run cb validate --path first. Broken edges show as missing nodes in the viewer — clean validate first so the layout reflects the real graph.
3. Confirm the active profile. The ifu-chain and predicate-tree view modes require the medical-device profile.

Capabilities

cb viewer (default mode: graph)

cb viewer --path                           # → /vault-graph.html
cb viewer --path  --out ~/some-graph.html  # custom output path

The default mode renders every node and every link in the vault. Nodes are colored by type with an inline legend. Edges follow the typed edge set (derived_from, supports, preceded_by, related_to, etc.). Hover any node for title + summary; click for full detail in the side panel; drag to reposition; scroll to zoom.

IFU history chain (medical-device)

cb viewer --path  --mode ifu-chain --out exports/ifu-chain.html

Only indication-for-use nodes appear, connected via preceded_by / followed_by edges. Use this for IFU evolution questions: "how did CardioTrace's IFU shift between their two 510(k)s?" The answer is the chain walk.

510(k) predicate tree (medical-device)

cb viewer --path  --mode predicate-tree --out exports/predicate-tree.html

Only regulatory-clearance nodes, connected via preceded_by (the predicate citation). Use this for substantial-equivalence questions: "which competitor clearances do our planned filings cite as predicates, and how deep does that chain go?"

Branding

The viewer reads /_branding/colors.yaml and uses the palette in the CSS variables of the rendered page. Override the entire HTML chrome by placing _branding/templates/viewer.html.j2 in the vault (same convention as the doc HTML wrapper).

Output

• One self-contained HTML file (~30–80 KB depending on vault size, mostly the embedded JSON node list).
• D3 v7 loaded from CDN. The file works offline once D3 has loaded once; for a fully offline-able file, override the template and inline the D3 bundle yourself.
• vault-graph.html is gitignored at the vault level by default — it's regenerated on demand, not part of the committed history. If you want to commit a snapshot for sharing, name the output something else (e.g. exports/landscape-2026-q2.html).

What this skill does NOT do

• Does not modify vault nodes.
• Does not visualize node bodies — only frontmatter (id, type, title, summary, confidence, verifiedat, sourcekind) is in the JSON island. Click-to-detail shows that subset; for body text, point the user at cb get-node or to opening the markdown file directly.
• Does not implement community detection (PRD §15 mentions it; deferred to a later milestone).
• Does not embed a search box (deferred — for now, the legend filter and node labels are the navigation).
• Does not visualize edges that point at unresolved targets. Run cb validate to find broken edges.

What to do when something goes wrong

• The viewer opens but no nodes appear. Likely a zero-node vault or all edges to missing targets. Check cb maintain audit.
• cb viewer --mode ifu-chain errors with profile mismatch. The vault isn't medical-device. Use --mode graph instead.
• Layout looks chaotic on a large vault. D3's force-directed layout settles over a few seconds; let it run. For dense subgraphs, click a node — neighbors stay highlighted and the rest dim, which makes the local structure readable.
• A node is missing from the graph but exists in the vault. It probably has no id, or it's in _system / _attachments / _branding (those folders are skipped). Run cb validate to surface parsing issues.

After rendering

• Report the output path, node count, and link count to the user.
• Offer to open it in the browser (the user can open /vault-graph.html themselves on macOS, or use whatever browser-launch helper their OS provides).
• For a presentation, suggest the IFU chain or predicate-tree views — they're tighter than the full graph and tell a specific story.

Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

• Author: nemock
• Source: nemock/company-brain
• License: MIT

Install and usage instructions live in the source repository linked above.