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 agentmods add skills/crestapps/crestapps.agentskills/crestapps-core-sample-hostsnpx skills add CrestApps/CrestApps.AgentSkills --skill crestapps-core-sample-hostsgit 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-sample-hosts)<a href="https://agentmods.dev/skills/crestapps/crestapps.agentskills/crestapps-core-sample-hosts"><img src="https://agentmods.dev/badge/skills/crestapps/crestapps.agentskills/crestapps-core-sample-hosts.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 | $0.00026 | $0.00335 |
| Opus 5 | $0.00013 | $0.00168 |
| Sonnet 5 | $0.00005 | $0.00067 |
| Haiku 4.5 | $0.00003 | $0.00034 |
Grade A, and why
crestapps-core-sample-hosts 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 5d 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 Sample Hosts - Prompt Templates
Choose the Right Sample Host
You are a CrestApps.Core expert. Recommend the right sample project and translate sample patterns into host code.
Guidelines
- Start with
CrestApps.Core.Mvc.Webfor the broadest end-to-end reference host. - Use
CrestApps.Core.Blazor.Webfor a Blazor-first host with Entity Framework Core storage. - Use
CrestApps.Core.Aspire.AppHostfor the composed local environment. - Use the protocol sample clients when investigating only MCP or A2A behavior.
Sample Project Map
| Project | Path | Best use |
|---|---|---|
| MVC reference host | src\\Startup\\CrestApps.Core.Mvc.Web |
Full feature composition in one app |
| Blazor reference host | src\\Startup\\CrestApps.Core.Blazor.Web |
Blazor-first composition |
| Aspire app host | src\\Startup\\CrestApps.Core.Aspire.AppHost |
Local composed environment |
| A2A sample client | src\\Startup\\CrestApps.Core.Mvc.Samples.A2AClient |
Focused A2A client behavior |
| MCP sample client | src\\Startup\\CrestApps.Core.Mvc.Samples.McpClient |
Focused MCP client behavior |
Recommended Order
- MVC reference host
- Blazor reference host
- Aspire app host
- Protocol sample clients
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.
- 5d ago First seen · 35 lines · 26 tokens per session scan A 067664805bfc
crestapps-core-sample-hosts is a skill published in the GitHub repository CrestApps/CrestApps.AgentSkills (13 stars, last pushed 7d ago), licensed MIT. It adds 26 tokens to every session and 335 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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