poster

poster is a skill for Claude Code, Codex from alecs5am/ralphy. It costs 290 tokens per session (2,541 once invoked), scanned A, original, Apache-2.0.

A design guide for making a single still-image poster that also works as a landing page. It describes a layout with a banner, large wordmark, hero photo, sticker collage, text block, and footer strip.

In plain words
What is it for?
Use it for poster, flyer, album-cover-style, key-art, or merchandise-drop graphics. It is for still images, not moving video or reproducing one specific existing poster.
Why use it?
It gives an image-making workflow a repeatable structure for promotional poster artwork without defining one particular brand or subject.

Skill for Claude CodeCodex

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.

agentmods
npx agentmods add skills/alecs5am/ralphy/poster
Any agent
npx skills add alecs5am/ralphy --skill poster
Clone the repo
git clone --depth 1 https://github.com/alecs5am/ralphy

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 poster

README.md
[![agentmods](https://agentmods.dev/badge/skills/alecs5am/ralphy/poster.svg)](https://agentmods.dev/skills/alecs5am/ralphy/poster)
Your own site
<a href="https://agentmods.dev/skills/alecs5am/ralphy/poster"><img src="https://agentmods.dev/badge/skills/alecs5am/ralphy/poster.svg" alt="Measured on agentmods" height="20"></a>
Per session 290 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,541 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found 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 $0.00290 $0.02541
Opus 5 $0.00145 $0.01270
Sonnet 5 $0.00058 $0.00508
Haiku 4.5 $0.00029 $0.00254

Measured 4d ago against content hash d8c556fe875e, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

poster 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 4d 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.

.agents/skills/poster/SKILL.md · 97 lines

How it starts

The opening of the file, as written. The whole thing — 97 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Trigger

FIRES on a generic still-poster brief: "make a poster for ", "drop poster", "poster-as-landing-page", "flyer", "key art", "hype graphic", "album-cover style still", "merch drop announcement image". Any subject, any aesthetic — the skill is subject- and style-agnostic.

DO NOT FIRE when:

  • The user points at one specific poster to reproduce (@template:<slug>, "remix this one", names a slug) → that is the remix path. See docs/skills-vs-templates.md.
  • The user wants a moving video (the wordmark animates, the hero talks) → match the video format / template, load the matching video craft-overlay skill (ugc-*), and use the editor playbook, not this skill.
  • The user pasted @guideline:<slug> for a register this poster sits in (photoreal humans, anti-AI-slop) → run ralphy guideline show <slug> first and fold its rules into the hero-photo slot.

What this skill is

A generalized layout overlay, not a finished poster. It does not name a brand, a hero, or a palette — it tells the art-director HOW this class of poster is built so a strong one comes out for whatever the user is promoting. It runs through ralphy generate image; it does not bypass the reference-required gate or the quality gate.

Hard invariants

  • All generation routes through ralphy generate image (no raw API). Read MODELS.md before naming any model id — the stack below is a default, not a hardcode.
  • The reference-required gate still fires for a named real entity in the hero or product slot (a real person, a recognizable branded product, an IP). A fictional brand + an original glyph + a generic product proceeds without a ref. Make the brand glyph explicitly ORIGINAL in the prompt ("NOT any existing brand") so the model does not drift toward a trademarked mark.
  • The quality gate refuses, not warns — two failed scoreImage in a row → stop and report options.
  • Real-brand pre-flight: site-grounding before any prompt. If the poster targets a real brand (user's own startup, a customer's site, any URL given), dispatch a Playwright sub-agent to crawl home + /docs + /pricing + /features + /examples BEFORE drafting the brand-DNA or prompt. Read artifacts/refs/research.md (the sub-agent's digest), not just a WebFetch of the home page. Every {{palette}} hex must trace to artifacts/refs/tokens.json; every named API symbol in body copy or code-creative slots must trace to "Documented API surfaces" in research.md. Full discipline + sub-agent prompt template: .agents/skills/researcher/references/site-grounding.md. Skipping this cost sotaocr-fb-001 $1.20 + 5/32 hallucinated-SDK creatives.

Read the full file on GitHub · 97 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. 4d ago First seen · 97 lines · 290 tokens per session scan A d8c556fe875e

Subscribe to this mod's changes

poster is a skill published in the GitHub repository alecs5am/ralphy (129 stars, last pushed 9d ago), licensed Apache-2.0. It adds 290 tokens to every session and 2,541 once invoked, about $0.0014 per session on Opus 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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