Agent skill

LLM Prompting Guide

by sammcj in sammcj/agentic-coding

Prompt format rules for generative video and music models. An agent skill from sammcj/agentic-coding.

Apache-2.0Auto-check passedAI & LLM Engineering

Install LLM Prompting Guide

skills CLI
$ npx skills add sammcj/agentic-coding --skill llm-prompting-guide -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install sammcj/agentic-coding llm-prompting-guide --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/sammcj/agentic-coding.git skills-src && mkdir -p .claude/skills && cp -r skills-src/Skills/llm-prompting-guide .claude/skills/llm-prompting-guide && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
llm-prompting-guide
GitHub stars
162
Token cost
~356 tokens
SKILL.md length
135 words
Files
7 (incl. references)
Skills in repo
64
Repo updated
First seen
Licence
Apache-2.0

At a glance

Prompt format rules for generative video and music models. An agent skill from sammcj/agentic-coding.

  • Reviewing a prompt for MiniMax H3 (text/image/reference-to-video with native audio)
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
  • MiniMax Music 3 (song generation from caption plus lyrics)
  • Chat-assistant prompts

What it does

LLM Prompting Guide is an agent skill from sammcj/agentic-coding. Prompt format rules for generative video and music models. Use when writing or reviewing a prompt for MiniMax H3 (text/image/reference-to-video with native audio) or MiniMax Music 3 (song generation from caption plus lyrics), in ComfyUI or elsewhere. Do NOT use for chat-assistant prompts, or for generative models not named here.

Its SKILL.md is about 360 tokens, which your agent loads only when the skill is triggered. The skill folder holds 7 other files, including reference files (for example `references/minimax-h3.md`, `references/minimax-music-3-corpus.md` and `references/minimax-music-3-genres.md`).

It sits in AI & LLM Engineering, covering Diffusion and image models. It works with MiniMax and ComfyUI. The repository describes itself as: Agentic Coding Rules, Templates etc... The licence is Apache-2.0.

When your agent uses it

  • Reviewing a prompt for MiniMax H3 (text/image/reference-to-video with native audio)
  • MiniMax Music 3 (song generation from caption plus lyrics)
  • Chat-assistant prompts
  • For generative models not named here

Example prompts

  • “/llm-prompting-guide”

What it can do on your machine

Read from SKILL.md and the folder at commit 2f25ced. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md.

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

LLM Prompting Guide loads about 356 tokens when it runs, and up to ~37k if it reads all its reference files. Until then it costs about 88 tokens; SKILL.md has 135 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~88
When it runs · the whole SKILL.md, loaded when a task matches
~356
With references · SKILL.md plus every file in references/, read only if the agent opens them
~37k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from sammcj/agentic-coding at commit 2f25ced, republished under its Apache-2.0 licence (© sammcj). 135 words, ~356 tokens.

Download SKILL.mdSave it as .claude/skills/llm-prompting-guide/SKILL.md (or your agent's skills folder). This skill also uses 6 other files; get the full folder from GitHub.
name
llm-prompting-guide
description
Prompt format rules for generative video and music models. Use when writing or reviewing a prompt for MiniMax H3 (text/image/reference-to-video with native audio) or MiniMax Music 3 (song generation from caption plus lyrics), in ComfyUI or elsewhere. Do NOT use for chat-assistant prompts, or for generative models not named here.

LLM Prompting Guide

The models below were trained on prompts written in a specific labelled structure, and guessing at that structure degrades output. Read the full guide for the model in play before writing any prompt text; the bullet here is a router, not enough to draft from.

Adding a model: one bullet above, plus the skills references/<model>.md opening with a table of contents and a mode-selection table.

By default, unless instructed otherwise save your generated outputs to a file in the current working directory named something related to the request.

© sammcj, Apache-2.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 6 other files (references) in Skills/llm-prompting-guide of sammcj/agentic-coding.

  • SKILL.md
  • references/.gitignore
  • references/minimax-h3.md
  • references/minimax-music-3-corpus.md
  • references/minimax-music-3-genres.md
  • references/minimax-music-3-negative-prompting.md
  • references/minimax-music-3.md

Open the folder on GitHubat commit 2f25ced

Compare with similar skills

LLM Prompting Guide next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

LLM Prompting Guide compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
LLM Prompting Guide this skillsammcj/agentic-coding162—~356Automated safety check: PassApache-2.0
Continuity Renderroadmaus/ComfyUI-Continuity133—~1.7kAutomated safety check: PassMIT
H3 Prompt Directordagthomas/comfyui_dagthomas290—~1.9kAutomated safety check: PassMIT
Comfyuicalesthio/OpenMontage66k—~2kAutomated safety check: PassAGPL-3.0
Minimax H3 Videoartokun/comfyui-mcp803—~3.4kAutomated safety check: PassMIT
H3 Videoagent-next/video-agent120—~2.9kAutomated safety check: PassApache-2.0

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Works with

Questions about LLM Prompting Guide

What does LLM Prompting Guide do?

Prompt format rules for generative video and music models. An agent skill from sammcj/agentic-coding. LLM Prompting Guide is an agent skill from sammcj/agentic-coding. Prompt format rules for generative video and music models.

When should I use LLM Prompting Guide?

LLM Prompting Guide fits situations like: reviewing a prompt for MiniMax H3 (text/image/reference-to-video with native audio); miniMax Music 3 (song generation from caption plus lyrics); chat-assistant prompts; for generative models not named here.

How do I install LLM Prompting Guide in Claude Code?

Run `npx skills add sammcj/agentic-coding --skill llm-prompting-guide -a claude-code`. Or copy the skill folder (Skills/llm-prompting-guide in sammcj/agentic-coding) into .claude/skills/llm-prompting-guide in your project. Claude Code loads it when a task matches its description.

How do I install LLM Prompting Guide in Codex?

Run `npx skills add sammcj/agentic-coding --skill llm-prompting-guide -a codex`. Or copy the skill folder (Skills/llm-prompting-guide in sammcj/agentic-coding) into .agents/skills/llm-prompting-guide in your project. Codex loads it when a task matches its description.

Can I use LLM Prompting Guide in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add sammcj/agentic-coding --skill llm-prompting-guide -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/llm-prompting-guide, .gemini/skills/llm-prompting-guide, .github/skills/llm-prompting-guide and .opencode/skills/llm-prompting-guide in your project.

What does LLM Prompting Guide need to run?

SKILL.md names no scripts, command-line tools or credentials: LLM Prompting Guide is instructions for the agent only.

Does LLM Prompting Guide access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is LLM Prompting Guide safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does LLM Prompting Guide use?

LLM Prompting Guide is published under the Apache-2.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does LLM Prompting Guide use?

About 356 tokens (SKILL.md is roughly 1.4k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 37k tokens, read only when the agent opens those files.

What are the alternatives to LLM Prompting Guide?

Skills that share tags, products or a category with LLM Prompting Guide: Continuity Render (roadmaus/ComfyUI-Continuity, 133 stars), H3 Prompt Director (dagthomas/comfyui_dagthomas, 290 stars), Comfyui (calesthio/OpenMontage, 66k stars) and Minimax H3 Video (artokun/comfyui-mcp, 803 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains LLM Prompting Guide?

sammcj (a GitHub user) maintains it in sammcj/agentic-coding, which has 162 GitHub stars. The repository holds 64 skills in this directory. The repository was last updated on October 9, 2026.

Source: sammcj/agentic-coding on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.