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-openaigit 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-openai)<a href="https://agentmods.dev/skills/crestapps/crestapps.agentskills/crestapps-core-openai"><img src="https://agentmods.dev/badge/skills/crestapps/crestapps.agentskills/crestapps-core-openai/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-openai"><img src="https://agentmods.dev/badge/skills/crestapps/crestapps.agentskills/crestapps-core-openai.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 | $0.00184 | $0.03450 |
| Opus 5.5 | $0.00074 | $0.01380 |
| Sonnet 5.5 | $0.00037 | $0.00690 |
| Haiku 4.5 | $0.00018 | $0.00345 |
Grade A, and why
crestapps-core-openai 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 — 248 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CrestApps.Core OpenAI
The CrestApps.Core.AI.OpenAI package connects CrestApps.Core to api.openai.com and to any server that speaks the OpenAI API. The connection holds credentials and the endpoint; each deployment names a model and declares what that model can do.
Guidelines
- Register only the providers the host uses. OpenAI is the simplest first provider because it needs only an API key.
- Put the API key, endpoint and
ChatApion the connection. Put the model name and its capabilities on the deployment. - Every configured deployment must declare its model capabilities (
Features). A deployment entry with no features and no legacyPurpose/Typeis skipped at startup with the warning "declares no model capabilities". - Pick deployments through slots (
AIDeploymentSlotNames) andIAIDeploymentManager.ResolveSlotAsync(...). Never hard-code a provider client in business code. - Use
crestapps-core-ai-runtimefor the provider-agnostic runtime,crestapps-core-chatfor completion loops, andcrestapps-core-realtime-voicefor voice sessions.
Registration
using CrestApps.Core.AI.OpenAI;
builder.Services.AddCrestAppsCore(crestApps => crestApps
.AddAISuite(ai => ai
.AddOpenAI()
)
);
AddAISuite(...) already calls AddCoreServices(), AddCoreAIServices() and AddCoreAIOrchestration(). Without the builder, register them yourself:
builder.Services
.AddCoreAIServices()
.AddCoreAIOrchestration()
.AddCoreAIOpenAI();
AddCoreAIOpenAI() registers:
| Service | Implementation |
|---|---|
IAIClientProvider |
OpenAIClientProvider (chat, embeddings, images, speech-to-text, text-to-speech, realtime) |
IAICompletionClient for "OpenAI" |
ProviderAICompletionClient<OpenAIClientMarker> |
IAIProviderConnectionHandler |
OpenAIConnectionHandler (unprotects a stored OpenAIConnectionMetadata.ApiKey) |
| Connection source and deployment provider | Client name OpenAIConstants.ClientName ("OpenAI") |
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 · +185 lines · +161 tokens per session 6cd2a432e09b
- 1mo ago First seen · 63 lines · 23 tokens per session scan A af461ce24cf9
crestapps-core-openai is a skill published in the GitHub repository CrestApps/CrestApps.AgentSkills (13 stars, last pushed yesterday), licensed MIT. It adds 184 tokens to every session and 3,450 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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