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crestapps-core

crestapps-core is a plugin for Claude Code from CrestApps/CrestApps.AgentSkills. Its manifest loads nothing; the 47 skills it bundles cost 8,046 tokens per session together, scanned A, original, MIT.

A collection of coding-agent skills for CrestApps.Core, a .NET library or foundation used by CrestApps projects. It is intended for GitHub Copilot CLI.

In plain words
What is it for?
Use it when working on CrestApps.Core code with GitHub Copilot CLI. The supplied details do not identify the individual tasks covered.
Why use it?
It gives the coding agent project-specific guidance for this library instead of relying only on general .NET knowledge.

Plugin for Claude Code

Written for Claude Code: a Claude Code plugin manifest.

not rated 13repo changed yesterday A scan tokens not measured original MIT

Good fit Use it when working on CrestApps.Core code with GitHub Copilot CLI. The supplied details do not identify the individual tasks covered.

Compare 6 plugins from other repositories ↓
Install in Claude Code
/plugin marketplace add CrestApps/CrestApps.AgentSkills
/plugin install crestapps-core
View source ↗ CrestApps/CrestApps.AgentSkills crestapps.com
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.

Clone the repo
git clone --depth 1 https://github.com/CrestApps/CrestApps.AgentSkills

Made for: Claude Code.

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

README.md
[![agentmods](https://agentmods.dev/badge/plugins/crestapps/crestapps.agentskills/crestapps-core/github.svg)](https://agentmods.dev/plugins/crestapps/crestapps.agentskills/crestapps-core)
Your own site
<a href="https://agentmods.dev/plugins/crestapps/crestapps.agentskills/crestapps-core"><img src="https://agentmods.dev/badge/plugins/crestapps/crestapps.agentskills/crestapps-core/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

Your own site · 80×15
<a href="https://agentmods.dev/plugins/crestapps/crestapps.agentskills/crestapps-core"><img src="https://agentmods.dev/badge/plugins/crestapps/crestapps.agentskills/crestapps-core.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session not measured What this adds to a session before it is invoked.
When invoked not measured The manifest loads nothing itself; its 47 skills cost 8,046 tokens a session between them.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Security

Grade A, and why

crestapps-core 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.

.claude-plugin/marketplace.json#crestapps-core · 24 lines

What it actually says

{
  "name": "crestapps-core",
  "source": "./plugins/crestapps-core",
  "description": "CrestApps.Core skills for GitHub Copilot CLI backed by CrestApps.AgentSkills.",
  "version": "1.0.4",
  "homepage": "https://github.com/CrestApps/CrestApps.AgentSkills/tree/main/plugins/crestapps-core",
  "repository": "https://github.com/CrestApps/CrestApps.AgentSkills",
  "license": "MIT",
  "keywords": [
    "crestapps",
    "copilot-cli",
    "skills",
    "dotnet"
  ],
  "category": "library",
  "tags": [
    "crestapps",
    "core",
    "agentskills"
  ],
  "skills": [
    "./skills"
  ]
}
Contents

What it installs

The manifest is a name and a version. 47 skills travel with it, and installing the plugin installs all of them — 8,046 tokens a session between them. Each is measured on its own page, and each can be installed alone.

Files

What ships with it

1 file beside marketplace.json#crestapps-core in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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 fa914d10fce1
  2. 2d ago First seen · 24 lines scan A b868a450926a

Subscribe to this mod's changes

crestapps-core is a plugin published in the GitHub repository CrestApps/CrestApps.AgentSkills (13 stars, last pushed yesterday), licensed MIT. Its token cost is not measured: this kind of file is read by the harness, not the model. 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 2026-10-21.

Backend and APIsagent-skillsaiai-agents-frameworkdotnetmcpmcp-server
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