Vizro is an open-source Python toolkit for assembling data visualization applications from low-code configuration. It helps developers create dashboards and multi-page apps from charts, tables, controls, layouts, navigation, and interactions, with optional high-code customization. Catalogue add-ons support working with Vizro projects.
Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add mckinsey/vizro --skill designing-vizro-layoutsgit clone --depth 1 https://github.com/mckinsey/vizroWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/mckinsey/vizro/designing-vizro-layouts)<a href="https://agentmods.dev/skills/mckinsey/vizro/designing-vizro-layouts"><img src="https://agentmods.dev/badge/skills/mckinsey/vizro/designing-vizro-layouts/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/mckinsey/vizro/designing-vizro-layouts"><img src="https://agentmods.dev/badge/skills/mckinsey/vizro/designing-vizro-layouts.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00058 | $0.00675 |
| Opus 5 | $0.00029 | $0.00338 |
| Sonnet 5 | $0.00012 | $0.00135 |
| Haiku 4.5 | $0.00006 | $0.00068 |
Grade A, and why
designing-vizro-layouts scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 12d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 48 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Vizro Layout Guidelines
Core Rules
- Use
type: grid(notvm.Layout). Recommended: 12 columns,row_min_height: "140px". - Use
-1for empty cells. Every component must form a perfect rectangle in the grid. - Place 2–3 charts per row. Full-width only for time-series line charts.
- Modifying existing layouts: Replicate the original structure and apply only the technical constraints below. See layout-guidelines.md for details.
Component Sizing (12-col grid, 140px rows)
| Component | Columns | Rows | Height |
|---|---|---|---|
| KPI Card | 2–3 | 1 | 140px |
| Small Chart | 4 | 3 | 420px |
| Large Chart | 6 | 4–5 | 560–700px |
| Table | 12 | 4–6 | 560–840px |
KPI cards: Place in the page Grid with equal columns and equal rows per card (e.g. 4 cards = 3 cols each). Use -1 for remaining empty cells. See layout-guidelines.md for the full KPI count lookup table and YAML examples. Charts need at least 2–3 rows to avoid looking squeezed.
Filter Placement
- Page-level (left sidebar): filters shared across multiple components
- Container-level (above container): filters scoped only to the components inside that container
- Prefer Filters over Parameters. Do not set
targets:by default — all components containing the specified column are automatically affected. Only settargets:when you want to limit which components are affected.
Selectors
Default: Just provide the column name to Filter or Parameter — Vizro auto-selects the appropriate selector based on the data type. Only override when the auto-selected selector doesn't fit:
| Data type | Selector | Example |
|---|---|---|
| 2–4 options | RadioItems | Region (N/S/E/W) |
| 5+ options | Dropdown | Category (many) |
| Numeric range | RangeSlider | Price ($0–$1000) |
| Single number | Slider | Year (2020–2025) |
| Date | DatePicker | Order date |
| Multi-select | Checklist | Status (Active, etc.) |
What ships with it
1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 12d ago First seen · 48 lines · 58 tokens per session scan A c6c873d6f5fb
designing-vizro-layouts is a skill published in the GitHub repository mckinsey/vizro (3,789 stars, last pushed today), licensed Apache-2.0. It adds 58 tokens to every session and 675 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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