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 CrestApps/CrestApps.AgentSkills --skill crestapps-core-data-storagegit clone --depth 1 https://github.com/CrestApps/CrestApps.AgentSkillsWrote 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/crestapps/crestapps.agentskills/crestapps-core-data-storage)<a href="https://agentmods.dev/skills/crestapps/crestapps.agentskills/crestapps-core-data-storage"><img src="https://agentmods.dev/badge/skills/crestapps/crestapps.agentskills/crestapps-core-data-storage/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/crestapps/crestapps.agentskills/crestapps-core-data-storage"><img src="https://agentmods.dev/badge/skills/crestapps/crestapps.agentskills/crestapps-core-data-storage.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 | $0.00168 | $0.02178 |
| Opus 5.5 | $0.00067 | $0.00871 |
| Sonnet 5.5 | $0.00034 | $0.00436 |
| Haiku 4.5 | $0.00017 | $0.00218 |
Grade A, and why
crestapps-core-data-storage 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 yesterday.
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 — 131 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CrestApps.Core Data Storage
You are a CrestApps.Core expert. Help the host choose a backend and register exactly the stores each enabled feature needs.
Guidelines
- Choose Entity Framework Core when the host already uses EF Core or wants any EF relational provider. Choose YesSql when the host wants a document store with collections and map indexes (as Orchard Core does).
- Register the backing store once on the root builder:
.AddEntityCoreSqliteDataStore(...)/.AddEntityCoreDataStore(...), or.AddYesSqlDataStore(...). The per-featureAdd*Stores()calls only select stores; they never create theDbContextorIStore. - Call the store method on every feature builder you enable. One call does not cover other features.
- Without a store package, connections and deployments come only from configuration and
ISearchIndexProfileStorefalls back to a null store, but nothing registersIAIProfileStore, the chat session stores, or theChatInteractioncatalog. Register a store before resolvingIAIProfileManager, chat sessions, or Chat Interactions. - Every write path needs a commit boundary (
IStoreCommitter); seecrestapps-core-foundations. - Create the schema before serving requests:
InitializeEntityCoreSchemaAsync()for EF Core, or theCreate*IndexSchemaAsyncextensions for YesSql.
Entity Framework Core
using CrestApps.Core;
using CrestApps.Core.AI;
using CrestApps.Core.AI.A2A;
using CrestApps.Core.AI.Chat;
using CrestApps.Core.AI.Documents;
using CrestApps.Core.AI.Documents.OpenXml;
using CrestApps.Core.AI.Documents.Pdf;
using CrestApps.Core.AI.Mcp;
using CrestApps.Core.AI.OpenAI;
using CrestApps.Core.Data.EntityCore;
Directory.CreateDirectory(Path.Combine(builder.Environment.ContentRootPath, "App_Data"));
builder.Services.AddCrestAppsCore(crestApps => crestApps
.AddAISuite(ai => ai
.AddEntityCoreStores()
.AddOpenAI()
.AddChatInteractions(chat => chat.AddEntityCoreStores())
.AddDocumentProcessing(documents => documents
.AddEntityCoreStores()
.AddOpenXml()
.AddPdf())
.AddAIMemory(memory => memory.AddEntityCoreStores())
.AddPersonas(personas => personas.AddEntityCoreStores())
.AddToolInstances(tools => tools.AddEntityCoreStores())
.AddA2AClient(a2a => a2a.AddEntityCoreStores())
.AddMcpClient(mcp => mcp.AddEntityCoreStores())
.AddMcpServer(mcp => mcp.AddEntityCoreStores()))
.AddIndexingServices(indexing => indexing.AddEntityCoreStores())
.AddEntityCoreSqliteDataStore(
$"Data Source={Path.Combine(builder.Environment.ContentRootPath, "App_Data", "crestapps.db")}"));
// Features registered on IServiceCollection
builder.Services.AddCoreWebCrawlerStoresEntityCore();
builder.Services.AddCoreFileSourceStoresEntityCore();
var app = builder.Build();
await app.Services.InitializeEntityCoreSchemaAsync();
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.
- yesterday Changed · +71 lines · +142 tokens per session c1169644f9b7
- 1mo ago First seen · 60 lines · 26 tokens per session scan A 131704cdb3e4
crestapps-core-data-storage is a skill published in the GitHub repository CrestApps/CrestApps.AgentSkills (13 stars, last pushed yesterday), licensed MIT. It adds 168 tokens to every session and 2,178 once invoked, about $0.0007 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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