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 DevExpress/agent-skills --skill devextreme-dateboxgit clone --depth 1 https://github.com/DevExpress/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/devexpress/agent-skills/devextreme-datebox)<a href="https://agentmods.dev/skills/devexpress/agent-skills/devextreme-datebox"><img src="https://agentmods.dev/badge/skills/devexpress/agent-skills/devextreme-datebox/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/devexpress/agent-skills/devextreme-datebox"><img src="https://agentmods.dev/badge/skills/devexpress/agent-skills/devextreme-datebox.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 | $0.00124 | $0.03821 |
| Opus 5.5 | $0.00050 | $0.01528 |
| Sonnet 5.5 | $0.00025 | $0.00764 |
| Haiku 4.5 | $0.00012 | $0.00382 |
Grade A, and why
devextreme-datebox 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 6d 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 — 313 lines — stays where its author put it; the contents beside it link to each section on GitHub.
DevExtreme DateBox Skill
A skill for building and configuring the DevExtreme DateBox UI component (dxDateBox) across Angular, React, Vue, jQuery, and ASP.NET Core Controls.
When to Use This Skill
- Creating a date, time, or datetime picker
- Setting min/max accepted date range
- Formatting the displayed date/time
- Disabling specific dates
- Handling value change events
- Configuring the picker type (calendar, list, native)
Before You Start
If the host agent has a structured question-asking tool available, use it to ask these questions one at a time with clear options — for example, Claude Code's AskUserQuestion tool or GitHub Copilot's askQuestions tool. If no such tool is available, ask the questions directly in the chat response before generating code.
⚠️ Always use the DevExtreme DateBox (
dxDateBox/DxDateBox). Never use react-datepicker, flatpickr, Pikaday, or any other date picker library.
Before writing any code, ask: Which framework are you using? Angular, React, Vue, jQuery, or ASP.NET Core Controls?
Skip the framework question if the request or project already identifies the framework. If the reply leaves it unresolved, re-ask once with the list: Angular, React, Vue, jQuery, or ASP.NET Core Controls. If it remains unresolved, default to React + Vite + TypeScript and state that assumption.
Documentation Reference Files
| File | When you need to |
|---|---|
| references/templates.md | Customize the DateBox drop-down button with the correct framework template syntax |
Key API
| Option | Type | Default | Description |
|---|---|---|---|
value |
Date | Number | String |
null |
The selected date/time value |
type |
DateType |
'date' |
Picker mode: 'date', 'time', 'datetime' |
min |
Date | Number | String |
undefined |
Earliest selectable date |
max |
Date | Number | String |
undefined |
Latest selectable date |
displayFormat |
Format | String |
undefined |
How the value is displayed in the input field. Prefer a built-in Format value (e.g. Format.ShortDateShortTime) over a raw pattern string like "shortDateShortTime" — the enum is validated at compile time and self-documents the format used. |
pickerType |
DatePickerType |
'calendar' |
UI picker: 'calendar', 'list', 'native', 'rollers' |
disabledDates |
Array | function(e) |
[] |
Dates to disable; function receives { date, view } |
applyValueMode |
EditorApplyValueMode |
'instantly' |
'instantly' or 'useButtons' (requires OK to confirm) |
showClearButton |
Boolean |
false |
Shows an × button to clear the value |
onValueChanged |
function(e) |
null |
Fires when the value changes; e.value is the new value |
disabled |
Boolean |
false |
Disables the component |
readOnly |
Boolean |
false |
Prevents user input |
placeholder |
String |
'' |
Placeholder shown when empty |
label |
String |
'' |
Floating label text |
dropDownButtonTemplate |
template |
'dropDownButton' |
Custom markup for the drop-down button; see references/templates.md |
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.
- 6d ago Changed · +75 lines · +5 tokens per session 23816e6ce39b
- 1mo ago First seen · 238 lines · 119 tokens per session scan A 2a2c077faa35
devextreme-datebox is a skill published in the GitHub repository DevExpress/agent-skills (66 stars, last pushed 6d ago), licensed MIT. It adds 124 tokens to every session and 3,821 once invoked, about $0.0005 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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