Agent skill

Image Poster

by sanqiufong in sanqiufong/slides-from-anything

Single-image generation skill for posters, key art, and editorial illustrations.

Apache-2.0Auto-check passedMedia & Creative

Install Image Poster

skills CLI
$ npx skills add sanqiufong/slides-from-anything --skill image-poster -a claude-code

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

GitHub CLI
$ gh skill install sanqiufong/slides-from-anything image-poster --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/sanqiufong/slides-from-anything.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/image-poster .claude/skills/image-poster && 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
image-poster
GitHub stars
132
Used in
1 other repo
Token cost
~857 tokens
SKILL.md length
327 words
Files
2
Skills in repo
48
Repo updated
First seen
Licence
Apache-2.0

At a glance

Single-image generation skill for posters, key art, and editorial illustrations.

  • Works in 4 steps: Read the project metadata → Compose the prompt → Dispatch via the media contract → …
  • Tasks that involve Image generation
  • SKILL.md covers Resource map, Workflow and Hard rules
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Image Poster is an agent skill from sanqiufong/slides-from-anything. Single-image generation skill for posters, key art, and editorial illustrations. Defaults to gpt-image-2 but is provider-agnostic — the same workflow drives Flux, Imagen, or Midjourney via the active upstream tooling. Output is one or more PNG/JPEG files saved to the project folder.

Its SKILL.md is about 860 tokens, which your agent loads only when the skill is triggered. The skill folder holds 1 other file.

It sits in Media & Creative, covering Image generation. It works with Midjourney. The repository describes itself as: Turn anything into slides. The licence is Apache-2.0.

When your agent uses it

  • Tasks that involve Image generation

Example prompts

  • “/image-poster”

Workflow steps

4 steps, taken from the step headings in SKILL.md.

  1. Read the project metadata
  2. Compose the prompt
  3. Dispatch via the media contract
  4. Hand off

What it can do on your machine

Read from SKILL.md and the folder at commit 65da4ac. 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 (its code samples are bash).

    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

Image Poster loads about 857 tokens when it runs. Until then it costs about 74 tokens; SKILL.md has 327 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~74
When it runs · the whole SKILL.md, loaded when a task matches
~857

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 sanqiufong/slides-from-anything at commit 65da4ac, republished under its Apache-2.0 licence (© sanqiufong). 327 words, ~857 tokens.

Download SKILL.mdSave it as .claude/skills/image-poster/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.
name
image-poster
description
Single-image generation skill for posters, key art, and editorial illustrations. Defaults to gpt-image-2 but is provider-agnostic — the same workflow drives Flux, Imagen, or Midjourney via the active upstream tooling. Output is one or more PNG/JPEG files saved to the project folder.
triggers
poster, key art, illustration, image, cover art, 海报, 插画
od.mode
image
od.surface
image
od.scenario
design
od.example_prompt
Editorial poster for an indie film festival — one bold abstract silhouette over a warm, slightly grainy paper background; hand-set sans serif title at the…

Image Poster Skill

Produce one finished image asset per turn unless the user asks for variations. Image generation rewards a tight, structured prompt — your job is to assemble that prompt from the user's brief, then dispatch.

Resource map

image-poster/
├── SKILL.md         ← you're reading this
└── example.html     ← what the resulting card looks like in Examples

Workflow

Step 0 — Read the project metadata

The active project carries imageModel, imageAspect, and (optional) imageStyle notes. Use them as the upstream model + canvas + style anchor; only ask the user to fill them in if they're marked (unknown — ask).

Step 1 — Compose the prompt

Plan in this exact order before calling any tool:

  1. Subject + composition — what is in the frame, where, at what scale; eye-line and crop.
  2. Lighting + mood — natural / studio / moody; warm / cool; key plus rim plus fill; time of day if outdoor.
  3. Palette + textures — hex anchors when the user gave a brand palette; otherwise a 3-word mood tag (e.g. "muted ochre + ink").
  4. Camera / lens — only if the user wants photographic realism ("85mm portrait, shallow DOF") or a specific film stock.
  5. What to avoid — common AI-slop patterns ("no extra fingers, no warped text, no logo placeholders").
Step 2 — Dispatch via the media contract

Use the unified dispatcher — do not call upstream provider APIs by hand. Run from your shell tool:

bash
"$OD_NODE_BIN" "$OD_BIN" media generate \
  --project "$OD_PROJECT_ID" \
  --surface image \
  --model "<imageModel from metadata>" \
  --aspect "<imageAspect from metadata>" \
  --output "<short-descriptive-name>.png" \
  --prompt "<the full assembled prompt from Step 1>"

The command prints one line of JSON: {"file": {"name": "...", ...}}. The daemon writes the bytes into the project folder; the FileViewer picks it up automatically.

Step 3 — Hand off

Reply with a one-paragraph summary of the prompt you used and the filename returned by the dispatcher (e.g. I generated hero-poster.png with gpt-image-2 at 1:1.). Do not emit an <artifact> tag.

Hard rules

  • One image per turn unless asked for variations.
  • Honor imageAspect exactly — the upstream cost is the same; matching the aspect avoids a re-render.
  • No filler typography in the image itself unless the user asked for in-frame text. Real copy beats lorem.
  • Save every render — never describe an image without producing the file. The user expects something to open in the file viewer.

© sanqiufong, 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 1 other file in skills/image-poster of sanqiufong/slides-from-anything.

  • SKILL.md
  • example.html

Open the folder on GitHubat commit 65da4ac

Used in 1 other repository

We found 1 copy of this SKILL.md (exact, near-identical or edited) in other folders, from 1 other GitHub owner. This page covers the copy in sanqiufong/slides-from-anything, which our catalogue first saw on October 7, 2026.

Compare with similar skills

Image Poster 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.

Image Poster compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Image Poster this skillsanqiufong/slides-from-anything1321 repos~857Automated safety check: PassApache-2.0
Design Masterminhnv0807/ai-business-skills610—~4.6kAutomated safety check: PassMIT
AI Image Creative Directiondylanfeltus/skills179—~2.6kAutomated safety check: PassMIT
Character Design Sheet PromptRylaispirit/cinematic-video-prompt-skill147—~941Automated safety check: PassMIT
Image PromptKiyoraka/Project-AI-MemoryCore374—~2.4kAutomated safety check: PassNone
Videoagent Image Studiopexoai/pexo-skills802—~1.7kAutomated safety check: PassMIT

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Works with

Questions about Image Poster

What does Image Poster do?

Single-image generation skill for posters, key art, and editorial illustrations. Image Poster is an agent skill from sanqiufong/slides-from-anything. Single-image generation skill for posters, key art, and editorial illustrations.

When should I use Image Poster?

Image Poster fits situations like: tasks that involve Image generation.

How do I install Image Poster in Claude Code?

Run `npx skills add sanqiufong/slides-from-anything --skill image-poster -a claude-code`. Or copy the skill folder (skills/image-poster in sanqiufong/slides-from-anything) into .claude/skills/image-poster in your project. Claude Code loads it when a task matches its description.

How do I install Image Poster in Codex?

Run `npx skills add sanqiufong/slides-from-anything --skill image-poster -a codex`. Or copy the skill folder (skills/image-poster in sanqiufong/slides-from-anything) into .agents/skills/image-poster in your project. Codex loads it when a task matches its description.

Can I use Image Poster 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 sanqiufong/slides-from-anything --skill image-poster -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/image-poster, .gemini/skills/image-poster, .github/skills/image-poster and .opencode/skills/image-poster in your project.

What does Image Poster need to run?

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

Does Image Poster 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 Image Poster 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 Image Poster use?

Image Poster 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 Image Poster use?

About 857 tokens (SKILL.md is roughly 3.4k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Image Poster?

Skills that share tags, products or a category with Image Poster: Design Master (minhnv0807/ai-business-skills, 610 stars), AI Image Creative Direction (dylanfeltus/skills, 179 stars), Character Design Sheet Prompt (Rylaispirit/cinematic-video-prompt-skill, 147 stars) and Image Prompt (Kiyoraka/Project-AI-MemoryCore, 374 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Image Poster?

sanqiufong (a GitHub user) maintains it in sanqiufong/slides-from-anything, which has 132 GitHub stars. The repository holds 48 skills in this directory. The repository was last updated on October 9, 2026.

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