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.svg" alt="Measured on agentmods" 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 | $0.00023 | $0.00325 |
| Opus 5 | $0.00012 | $0.00162 |
| Sonnet 5 | $0.00005 | $0.00065 |
| Haiku 4.5 | $0.00002 | $0.00032 |
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 6d 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.
What it actually says
CrestApps.Core OpenAI - Prompt Templates
Add OpenAI Support
You are a CrestApps.Core expert. Generate code and configuration for using OpenAI with CrestApps.Core.
Guidelines
- Use OpenAI for the simplest initial setup.
- Register only the provider the host needs.
- Put the API key on the connection and the model choice on the deployment.
- Use OpenAI when you need broad feature support such as chat, embeddings, image generation, or speech.
Builder Registration
builder.Services.AddCrestAppsCore(crestApps => crestApps
.AddAISuite(ai => ai
.AddOpenAI()
)
);
Raw Registration
builder.Services
.AddCoreAIServices()
.AddCoreAIOpenAI();
Configuration
{
"CrestApps": {
"AI": {
"Connections": [
{
"Name": "primary-openai",
"ClientName": "OpenAI",
"ApiKey": "YOUR_API_KEY"
}
],
"Deployments": [
{
"Name": "gpt-4.1",
"ClientName": "OpenAI",
"ConnectionName": "primary-openai",
"ModelName": "gpt-4.1",
"Purpose": "Chat"
}
]
}
}
}
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.
- 6d 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 8d ago), licensed MIT. It adds 23 tokens to every session and 325 once invoked, about $0.0001 per session on Opus 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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