crestapps-core-openai

crestapps-core-openai is a skill for Claude Code from CrestApps/CrestApps.AgentSkills. It costs 184 tokens per session (3,450 once invoked), scanned A, original, MIT.

Guidance for connecting OpenAI models to CrestApps.Core, a .NET framework for AI-enabled applications. It covers provider registration, API-key connections, and model deployments.

In plain words
What is it for?
Use it to register OpenAI, store an API key on a connection, configure named model deployments, and support chat, embeddings, image generation, or speech.
Why use it?
It separates access credentials from the selected model and shows the configuration needed for different AI tasks. This reduces guesswork when adding OpenAI support.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the crestapps-core plugin — 47 skills shipped together

Good fit Use it to register OpenAI, store an API key on a connection, configure named model deployments, and support chat, embeddings, image generation, or speech.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/crestapps/crestapps.agentskills/crestapps-core-openai
Install

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.

Any agent
npx skills add CrestApps/CrestApps.AgentSkills --skill crestapps-core-openai
Clone the repo
git clone --depth 1 https://github.com/CrestApps/CrestApps.AgentSkills

Made for: Claude Code.

Or install crestapps-core, the plugin that ships this one along with the rest of its 47 skills.

Wrote 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.

agentmods badge for crestapps-core-openai

README.md
[![agentmods](https://agentmods.dev/badge/skills/crestapps/crestapps.agentskills/crestapps-core-openai/github.svg)](https://agentmods.dev/skills/crestapps/crestapps.agentskills/crestapps-core-openai)
Your own site
<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.

agentmods 80×15 button for crestapps-core-openai

Your own site · 80×15
<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>
Per session 184 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,450 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce 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

Measured yesterday against content hash 6cd2a432e09b, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

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.

plugins/crestapps-core/skills/crestapps-core-openai/SKILL.md · 248 lines

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 ChatApi on 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 legacy Purpose/Type is skipped at startup with the warning "declares no model capabilities".
  • Pick deployments through slots (AIDeploymentSlotNames) and IAIDeploymentManager.ResolveSlotAsync(...). Never hard-code a provider client in business code.
  • Use crestapps-core-ai-runtime for the provider-agnostic runtime, crestapps-core-chat for completion loops, and crestapps-core-realtime-voice for 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")

Read the full file on GitHub · 248 lines

Changes

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.

  1. yesterday Changed · +185 lines · +161 tokens per session 6cd2a432e09b
  2. 1mo ago First seen · 63 lines · 23 tokens per session scan A af461ce24cf9

Subscribe to this mod's changes

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.

Related

Other skills, from other repositories

microsoft-extensions-ai

Build provider-agnostic .NET AI integrations with Microsoft.Extensions.AI, IChatClient, embeddings, middleware, structured output, vector search, and evaluation. USE FOR: building or reviewing .NET code that uses Microsoft.Extensions.AI, Microsoft.Extensions.AI.Abstractions, IChatClient, IEmbeddingGenerator…

managedcode/dotnet-skills · 128 tokens

gdal-api

Use when programming against GDAL/OGR in C, C++, Python, Java, or .NET — raster/vector I/O, gdal.UseExceptions, OGRSpatialReference transforms, gdal.Translate / gdal.Warp, VRT/COG, or fixing "no driver registered" and UnsatisfiedLinkError; C++ gdal-config, Maven org.gdal:gdal 3.13.0, NuGet MaxRev.Gdal.Core.

znlgis/opengis-skills · 96 tokens

publish-release

Releases a new McpOrchestrator version end to end — version bump PR, tag, and the automated deploy to GitHub Releases, NuGet, and the MCP Registry. Use when asked to release, publish, deploy, ship, or bump the version of McpOrchestrator.

Byggarepop/dotnet-mcp-orchestrator · 63 tokens

release-notes

Writes user-facing release notes from a git commit range. Use when asked to draft release notes, a changelog entry, or "what's new" text for a release.

Byggarepop/dotnet-mcp-orchestrator · 39 tokens

opik-verify

Decide ship or hold for a candidate from the compare skill's numbers, against an explicit release policy — regressions, pass rate, safety-tagged cases, subgroup consistency, latency and cost budgets, flakiness, evidence size, and whether the judge is validated. Reads two experiments on an Opik test suite via the SDK…

comet-ml/opik-claude-code-plugin · 145 tokens

add-prompt

Scaffold a new MCP prompt template. Use when the user asks to add a prompt, create a reusable message template, or define a prompt for LLM interactions.

cyanheads/workflows-mcp-server · 37 tokens