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-ai-memorygit 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-ai-memory)<a href="https://agentmods.dev/skills/crestapps/crestapps.agentskills/crestapps-core-ai-memory"><img src="https://agentmods.dev/badge/skills/crestapps/crestapps.agentskills/crestapps-core-ai-memory/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-ai-memory"><img src="https://agentmods.dev/badge/skills/crestapps/crestapps.agentskills/crestapps-core-ai-memory.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 | $0.00140 | $0.01155 |
| Opus 5.5 | $0.00056 | $0.00462 |
| Sonnet 5.5 | $0.00028 | $0.00231 |
| Haiku 4.5 | $0.00014 | $0.00115 |
Grade A, and why
crestapps-core-ai-memory 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 — 108 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CrestApps.Core AI Memory
Memory stores long-lived facts about the authenticated user (preferences, projects, roles) and recalls them in later conversations. It is not for transient chat state.
Registration
builder.Services.AddCrestAppsCore(crestApps => crestApps
.AddAISuite(ai => ai
.AddOpenAI()
.AddAIMemory(memory => memory
.AddEntityCoreStores())) // or .AddYesSqlStores()
.AddIndexingServices(indexing => indexing
.AddEntityCoreStores()
.AddElasticsearch(
builder.Configuration.GetSection("CrestApps:Elasticsearch"),
elasticsearch => elasticsearch.AddAIMemory()))
.AddEntityCoreSqliteDataStore("Data Source=app.db"));
builder.Services.Configure<AIMemoryOptions>(options =>
{
options.IndexProfileName = "user-memories"; // an index profile of type AIMemory
options.TopN = 5;
});
AddAIMemory(...)callsAddCoreAIMemory(), which registersIAIMemorySafetyService,IAIMemorySearchService,AIMemoryIndexingService,AIMemoryOrchestrationHandler,AIMemoryPreemptiveRagHandler, the options and the four memory tools.- The store builder call registers
IAIMemoryStore(andICatalog<AIMemoryEntry>). YesSql hosts also create the index table withCreateAIMemoryEntryIndexSchemaAsync(...). - A backend's
AddAIMemory()registers theAIMemoryindex-profile source, its profile handler and the keyedIMemoryVectorSearchService. Without it, memory is stored but never searched semantically. AIMemoryOptions.IndexProfileNamemust name an existing index profile of typeAIMemory; otherwise indexing logs a warning and skips.
Turning Memory On
| Surface | Switch |
|---|---|
| AI profile | MemoryMetadata.EnableUserMemory = true on the profile (profile.Put(new MemoryMetadata { EnableUserMemory = true })) |
| Chat interactions | ChatInteractionMemoryOptions.EnableUserMemory (default true) |
| Preemptive recall | GeneralAIOptions.EnablePreemptiveMemoryRetrieval (default true) |
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 · +57 lines · +115 tokens per session 1d1b5a97ee41
- 1mo ago First seen · 51 lines · 25 tokens per session scan A a468db923896
crestapps-core-ai-memory is a skill published in the GitHub repository CrestApps/CrestApps.AgentSkills (13 stars, last pushed yesterday), licensed MIT. It adds 140 tokens to every session and 1,155 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 2026-08-30.
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