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-numberboxgit 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-numberbox)<a href="https://agentmods.dev/skills/devexpress/agent-skills/devextreme-numberbox"><img src="https://agentmods.dev/badge/skills/devexpress/agent-skills/devextreme-numberbox/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-numberbox"><img src="https://agentmods.dev/badge/skills/devexpress/agent-skills/devextreme-numberbox.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 | $0.00110 | $0.02440 |
| Opus 5 | $0.00055 | $0.01220 |
| Sonnet 5 | $0.00022 | $0.00488 |
| Haiku 4.5 | $0.00011 | $0.00244 |
Grade A, and why
devextreme-numberbox 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 11d 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 — 228 lines — stays where its author put it; the contents beside it link to each section on GitHub.
DevExtreme NumberBox Skill
A skill for building and configuring the DevExtreme NumberBox UI component (dxNumberBox) across Angular, React, Vue, and jQuery.
When to Use This Skill
- Creating a numeric input field
- Setting min/max value boundaries
- Formatting the displayed number
- Enabling spin buttons
- Handling value change events
- Using number masks
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 NumberBox (
dxNumberBox/DxNumberBox). Never use react-number-format, numeral.js, or a plain HTML<input type="number">.
Before writing any code, ask: Which framework are you using? Angular, React, Vue, or jQuery?
Key API
| Option | Type | Default | Description |
|---|---|---|---|
value |
Number |
0 |
The current numeric value |
min |
Number |
-Infinity |
Minimum allowed value |
max |
Number |
Infinity |
Maximum allowed value |
format |
Format | String |
'' |
Display format (e.g., '$ #,##0.##', '#0.00') |
step |
Number |
1 |
Increment step for spin buttons and arrow keys |
showSpinButtons |
Boolean |
false |
Shows increment/decrement buttons |
showClearButton |
Boolean |
false |
Shows an × button to clear the field |
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 |
invalidValueMessage |
String |
'Value must be a number' |
Message shown when input is not a valid number |
inputAttr |
Object |
{} |
HTML attributes applied to the inner <input> element |
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.
- 11d ago First seen · 228 lines · 110 tokens per session scan A 11b6e5678005
devextreme-numberbox is a skill published in the GitHub repository DevExpress/agent-skills (52 stars, last pushed 23d ago), licensed MIT. It adds 110 tokens to every session and 2,440 once invoked, about $0.0006 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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