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 YPares/agent-skills --skill textual-buildergit clone --depth 1 https://github.com/YPares/agent-skillsWrote 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/ypares/agent-skills/textual-builder)<a href="https://agentmods.dev/skills/ypares/agent-skills/textual-builder"><img src="https://agentmods.dev/badge/skills/ypares/agent-skills/textual-builder/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/ypares/agent-skills/textual-builder"><img src="https://agentmods.dev/badge/skills/ypares/agent-skills/textual-builder.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 | $0.00073 | $0.01245 |
| Opus 5.5 | $0.00029 | $0.00498 |
| Sonnet 5.5 | $0.00015 | $0.00249 |
| Haiku 4.5 | $0.00007 | $0.00125 |
Grade A, and why
textual-builder 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 2mo 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 — 176 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Textual Builder
Overview
This skill helps you build sophisticated Text User Interfaces (TUIs) using Textual, a Python framework for creating terminal and browser-based applications with a modern web-inspired API. It includes reference documentation, a card game template, and best practices for Textual development.
Quick Start
Basic Textual App
from textual.app import App, ComposeResult
from textual.widgets import Header, Footer, Label
class MyApp(App):
def compose(self) -> ComposeResult:
yield Header()
yield Label("Hello, Textual!")
yield Footer()
if __name__ == "__main__":
app = MyApp()
app.run()
Card Game Template
For card game prototyping, copy the template:
cp -r assets/card-game-template/* ./my-game/
cd my-game
python app.py
The template includes:
- Interactive Card widget with face-up/down states
- Hand containers for player cards
- Play area with turn management
- Key bindings for card selection and playing
- Customizable styling
See assets/card-game-template/README.md for customization guide.
When to Read Reference Documentation
This skill includes comprehensive reference files. Load them based on your task:
references/basics.md
Read when: Setting up app structure, using reactive attributes, handling mounting, querying widgets, or working with messages/events.
Covers:
- App structure and compose method
- Reactive attributes and watchers
- Mounting and dynamic widget creation
- Widget querying
- Messages, events, and custom messages
references/widgets.md
Read when: Adding UI elements like buttons, inputs, labels, data tables, or creating custom widgets.
Covers:
- Display widgets (Label, Static, Placeholder)
- Input widgets (Button, Input, TextArea, Switch)
- DataTable for tabular data
- Layout containers (Container, Grid, Horizontal, Vertical)
- Custom widget creation
- Header/Footer
references/layout.md
Read when: Designing layouts, positioning widgets, using grid systems, or handling responsive sizing.
What ships with it
8 files 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.
- 2mo ago First seen · 176 lines · 73 tokens per session scan A 9a25ed7a211c
textual-builder is a skill published in the GitHub repository YPares/agent-skills (30 stars, last pushed yesterday), licensed MIT. It adds 73 tokens to every session and 1,245 once invoked, about $0.0003 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 2026-08-30.
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