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 oborchers/fractional-cto --skill data-tablesgit clone --depth 1 https://github.com/oborchers/fractional-ctoWrote 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/oborchers/fractional-cto/data-tables)<a href="https://agentmods.dev/skills/oborchers/fractional-cto/data-tables"><img src="https://agentmods.dev/badge/skills/oborchers/fractional-cto/data-tables/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/oborchers/fractional-cto/data-tables"><img src="https://agentmods.dev/badge/skills/oborchers/fractional-cto/data-tables.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00061 | $0.00757 |
| Opus 5.5 | $0.00024 | $0.00303 |
| Sonnet 5.5 | $0.00012 | $0.00151 |
| Haiku 4.5 | $0.00006 | $0.00076 |
Grade A, and why
data-tables 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 5d 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 — 92 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Data Tables Are Where SaaS Products Are Won or Lost
Enterprise SaaS lives and dies by its data tables. The rules are non-negotiable.
Alignment Rules
| Content Type | Alignment |
|---|---|
| Text | Left-align |
| Numbers | Right-align |
| Headers | Match content alignment |
| Data columns | Never center-align |
Use monospace or tabular typography for numbers so "$1,111.11" doesn't visually outweigh "$999.99."
Pagination vs. Infinite Scroll
Pagination beats infinite scroll for SaaS data tables — always.
Nielsen Norman Group's research explains why: infinite scroll creates a "lack of landmarks." Users can't remember where items were. With pagination, users remember "it was on page 3, near the top."
Pogo-sticking — clicking into a record, then going back — is especially destructive with infinite scroll because users are often returned to the top of the list.
Pagination rules:
- Keep pages at 10–20 items
- Store pagination state in the URL
- Show total item count
- Preserve filters and sorting across pages
Two Table Types
Shopify Polaris makes a critical distinction:
DataTable (Static Comparison)
For showing values across categories with summary rows and fixed columns. Read-only comparison view.
IndexTable (Actionable Resource List)
For orders, customers, products — with row selection, bulk actions, and navigation to detail pages.
Build both patterns. The choice depends on whether users need to act on the data or compare it.
Column Defaults
Invest heavily in choosing which columns appear by default. Most users never customize.
Rules:
- Allow users to show, hide, reorder, and resize columns
- Always provide a prominent "Reset to defaults" button
- Good defaults mean most users never need to customize
Bulk Actions
Show a toolbar when one or more rows are selected.
Placement options:
- Replace the header row
- Float at the bottom of the viewport
Selection options:
- Support both "select all on this page" and "select all across all pages" as separate options
- On mobile screens below 490px, hide bulk actions unless essential — convert tables to card layouts instead
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.
- 5d ago First seen · 92 lines · 61 tokens per session scan A b67c67ba5f76
data-tables is a skill published in the GitHub repository oborchers/fractional-cto (32 stars, last pushed 5d ago), licensed MIT. It adds 61 tokens to every session and 757 once invoked, about $0.0002 per session on Opus 5.5. 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 2026-10-13.
Other skills, from other repositories
anti-slop-design
Autonomous Principal Design Technologist. Cures vibe-coded software from AI frontend slop using curated token archetypes and 7-axis quality gating.
chakra-ui-builder
Build responsive, accessible UI components and layouts using Chakra UI v3, install or configure Chakra UI in new and existing projects, and design scalable themes using tokens, semantic tokens, recipes, and slot recipes. Use this skill whenever a user asks to build, create, or generate any UI component, page, form…
visual-ralph
Visual Ralph orchestration for frontend UI from generated references, static references, or live URL targets, using $ultragoal with built-in visual verdict and pixel-diff evidence until the implementation matches and leaves a reproducible design system.
frontend-ui-dark-ts
Build dark-themed React applications using Tailwind CSS with custom theming, glassmorphism effects, and Framer Motion animations. Use when creating dashboards, admin panels, or data-rich interfaces with a refined dark aesthetic.
prototype-web
A clickable, high-fidelity web product prototype with navigation, a hero section, feature cards, steps, social proof, and optional pricing. It is designed to resemble a finished landing page while remaining a prototype.
frontend-visual-qa
Audits rendered UI and specific task/object-link handoffs; excludes ordinary source citations alone. Audits already-rendered UI and Markdown/Obsidian image layout — web app, deck/slide, dashboard, design-system, or Electron/native app — via real-browser/native-app journeys and a Playwright sweep. Use after UI…