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 devexpress-xaf-business-logic-xpogit 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/devexpress-xaf-business-logic-xpo)<a href="https://agentmods.dev/skills/devexpress/agent-skills/devexpress-xaf-business-logic-xpo"><img src="https://agentmods.dev/badge/skills/devexpress/agent-skills/devexpress-xaf-business-logic-xpo/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/devexpress-xaf-business-logic-xpo"><img src="https://agentmods.dev/badge/skills/devexpress/agent-skills/devexpress-xaf-business-logic-xpo.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 | $0.00161 | $0.02010 |
| Opus 5.5 | $0.00064 | $0.00804 |
| Sonnet 5.5 | $0.00032 | $0.00402 |
| Haiku 4.5 | $0.00016 | $0.00201 |
Grade A, and why
devexpress-xaf-business-logic-xpo 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 10d 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 — 155 lines — stays where its author put it; the contents beside it link to each section on GitHub.
DevExpress XAF — Business Logic (XPO Sub-Skill)
This sub-skill extends devexpress-xaf-business-logic with XPO-specific patterns. It does not duplicate IObjectSpace API — refer to the base skill for ORM-independent CRUD operations. This skill covers the XPO classes and patterns that are used underneath or alongside the IObjectSpace abstraction.
When to Use This Skill
Use this skill (in addition to the base skill) when:
- The XAF project uses XPO as its ORM
- You need to access the underlying
Session/UnitOfWorkfromXPObjectSpace - You need XPO-specific collections (
XPCollection<T>,XPQuery<T>,XPView) - You need
NestedUnitOfWorkfor nested transactions - You need to override
AfterConstruction,OnSaving,OnDeleting,OnLoadedin a business class - You need server-mode data sources (
XPInstantFeedbackSource,XPServerCollectionSource) - You need to use
SetPropertyValuepattern for change tracking
Prerequisites & Installation
NuGet Packages
| Package | Purpose |
|---|---|
DevExpress.ExpressApp.Xpo |
XPO Object Space provider (XPObjectSpace) |
DevExpress.Persistent.BaseImpl.Xpo |
XPO base classes (BaseObject, PermissionPolicyUser, etc.) |
DevExpress.Xpo |
Core XPO library (Session, UnitOfWork, XPCollection, XPQuery) |
XPO Object Space Provider Registration
Blazor — MySolution.Blazor.Server\Startup.cs:
services.AddXaf(Configuration, builder => {
builder.ObjectSpaceProviders
.AddXpo((serviceProvider, options) => {
string connectionString = Configuration.GetConnectionString("ConnectionString");
options.ConnectionString = connectionString;
})
.AddNonPersistent();
});
WinForms — MySolution.Win\Startup.cs:
var builder = WinApplication.CreateBuilder();
builder.ObjectSpaceProviders
.AddXpo((application, options) => {
options.ConnectionString = connectionString;
})
.AddNonPersistent();
What ships with it
4 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.
- 10d ago First seen · 155 lines · 161 tokens per session scan A 3cf9eacab749
devexpress-xaf-business-logic-xpo is a skill published in the GitHub repository DevExpress/agent-skills (66 stars, last pushed 11d ago), licensed MIT. It adds 161 tokens to every session and 2,010 once invoked, about $0.0006 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 2026-10-20.
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