custom_github_copilot_agent_builder: Skill for Claude Code

.github/skills/make-skill-template/SKILL.md

make-skill-template is a skill for Claude Code, Codex from dhar174/custom_github_copilot_agent_builder. It costs 75 tokens per session (1,227 once invoked), scanned A, a copy of make-skill-template, MIT.

A template for creating Agent Skills, which are reusable instruction packages that give a coding agent specialised behaviour.

In plain words
What is it for?
Scaffolding a new skill, duplicating the template, and adding optional resources such as scripts, references, or assets.
Why use it?
It provides the required folder structure and SKILL.md format, so new skills start with the expected files and metadata.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

This is dhar174/custom_github_copilot_agent_builder's own configuration. It tells Claude Code and Codex how to work on custom_github_copilot_agent_builder itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything custom_github_copilot_agent_builder configures →

Reuse

Borrowing it

Nothing to install: this file belongs to dhar174/custom_github_copilot_agent_builder. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/dhar174/custom_github_copilot_agent_builder/main/.github/skills/make-skill-template/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/dhar174/custom_github_copilot_agent_builder

Made for: Claude Code, Codex.

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 make-skill-template

README.md
[![agentmods](https://agentmods.dev/badge/skills/dhar174/custom_github_copilot_agent_builder/make-skill-template/github.svg)](https://agentmods.dev/skills/dhar174/custom_github_copilot_agent_builder/make-skill-template)
Your own site
<a href="https://agentmods.dev/skills/dhar174/custom_github_copilot_agent_builder/make-skill-template"><img src="https://agentmods.dev/badge/skills/dhar174/custom_github_copilot_agent_builder/make-skill-template/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 make-skill-template

Your own site · 80×15
<a href="https://agentmods.dev/skills/dhar174/custom_github_copilot_agent_builder/make-skill-template"><img src="https://agentmods.dev/badge/skills/dhar174/custom_github_copilot_agent_builder/make-skill-template.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 75 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,227 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.
Origin 100% copy Near-identical to another mod 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 $0.00075 $0.01227
Opus 5.5 $0.00030 $0.00491
Sonnet 5.5 $0.00015 $0.00245
Haiku 4.5 $0.00007 $0.00123

Measured 1mo ago against content hash 8f2d681b7cda, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

make-skill-template 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.

Origin

This is a copy

100% identical to make-skill-template — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

.github/skills/make-skill-template/SKILL.md · 148 lines

How it starts

The opening of the file, as written. The whole thing — 148 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Make Skill Template

A meta-skill for creating new Agent Skills. Use this skill when you need to scaffold a new skill folder, generate a SKILL.md file, or help users understand the Agent Skills specification.

When to Use This Skill

  • User asks to "create a skill", "make a new skill", or "scaffold a skill"
  • User wants to add a specialized capability to their GitHub Copilot setup
  • User needs help structuring a skill with bundled resources
  • User wants to duplicate this template as a starting point

Prerequisites

  • Understanding of what the skill should accomplish
  • A clear, keyword-rich description of capabilities and triggers
  • Knowledge of any bundled resources needed (scripts, references, assets, templates)

Creating a New Skill

Step 1: Create the Skill Directory

Create a new folder with a lowercase, hyphenated name:

skills/<skill-name>/
└── SKILL.md          # Required

Step 2: Generate SKILL.md with Frontmatter

Every skill requires YAML frontmatter with name and description:

---
name: <skill-name>
description: '<What it does>. Use when <specific triggers, scenarios, keywords users might say>.'
---
Frontmatter Field Requirements
Field Required Constraints
name Yes 1-64 chars, lowercase letters/numbers/hyphens only, must match folder name
description Yes 1-1024 chars, must describe WHAT it does AND WHEN to use it
license No License name or reference to bundled LICENSE.txt
compatibility No 1-500 chars, environment requirements if needed
metadata No Key-value pairs for additional properties
allowed-tools No Space-delimited list of pre-approved tools (experimental)
Description Best Practices

CRITICAL: The description is the PRIMARY mechanism for automatic skill discovery. Include:

  1. WHAT the skill does (capabilities)
  2. WHEN to use it (triggers, scenarios, file types)
  3. Keywords users might mention in prompts

Read the full file on GitHub · 148 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. 1mo ago First seen · 148 lines · 75 tokens per session scan A 8f2d681b7cda

Subscribe to this mod's changes

make-skill-template is a skill published in the GitHub repository dhar174/custom_github_copilot_agent_builder (7 stars, last pushed 8mo ago), licensed MIT. It adds 75 tokens to every session and 1,227 once invoked, about $0.0003 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 100% identical to make-skill-template, differing in 0 lines, and is treated as a copy.

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