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 ikcode-dev/copilot-kit --skill kit-copilot-create-agentgit clone --depth 1 https://github.com/ikcode-dev/copilot-kitWrote 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/ikcode-dev/copilot-kit/kit-copilot-create-agent)<a href="https://agentmods.dev/skills/ikcode-dev/copilot-kit/kit-copilot-create-agent"><img src="https://agentmods.dev/badge/skills/ikcode-dev/copilot-kit/kit-copilot-create-agent/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/ikcode-dev/copilot-kit/kit-copilot-create-agent"><img src="https://agentmods.dev/badge/skills/ikcode-dev/copilot-kit/kit-copilot-create-agent.svg" alt="Reviewed on agentmods" width="80" 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 | $0.00078 | $0.05861 |
| Opus 5.5 | $0.00031 | $0.02344 |
| Sonnet 5.5 | $0.00016 | $0.01172 |
| Haiku 4.5 | $0.00008 | $0.00586 |
Grade A, and why
kit-copilot-create-agent 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 1mo 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.
How it starts
The opening of the file, as written. The whole thing — 363 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Create a Custom Agent
What This Skill Does
Creates a properly structured custom agent file (.agent.md) for GitHub Copilot in VS Code following the custom agents documentation. The generated agent defines a persona — a specialized AI identity with its own philosophy, problem-solving approach, tool access, skill composition, and optionally subagent orchestration capabilities.
A custom agent is NOT a task template or a project configuration. It is the WHO and HOW of the AI — the role it plays, the way it thinks, and how it composes with other agents and skills.
Key Concepts: Agent vs Skill vs Prompt vs Instructions
Understanding the separation of concerns is critical for creating effective agents. Each customization mechanism has a distinct purpose:
| Component | Defines | Analogy | File Type |
|---|---|---|---|
| Custom Agent | WHO the AI is and HOW it behaves | The employee's role, personality, and work style | .agent.md |
| Agent Skill | Reusable CAPABILITY or multi-step workflow | A specialized training module the employee can use | SKILL.md in a skill directory |
| Prompt File | WHAT specific task to perform | A work order or task assignment | .prompt.md |
| Custom Instructions | WHERE — project context and standards | The company handbook | .instructions.md |
What ships with it
5 files beside SKILL.md 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.
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.
- 1mo ago First seen · 363 lines · 78 tokens per session scan A 1580a42e0b58
kit-copilot-create-agent is a skill published in the GitHub repository ikcode-dev/copilot-kit (29 stars, last pushed 7mo ago), licensed MIT. It adds 78 tokens to every session and 5,861 once invoked, about $0.0003 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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