poster-maker: Instructions file for Claude Code

CLAUDE.md

poster-maker CLAUDE.md is an instructions file for Claude Code from dabodamjan/poster-maker. It costs 1,198 tokens per session, scanned A, original, MIT.

Project instructions for Poster Maker, a tool that creates posters as HTML and CSS files and exports them as PNG or PDF images.

In plain words
What is it for?
Use them for event flyers, product announcements, conference posters, DJ or meetup graphics, sales notices, and other single-page poster designs.
Why use it?
They explain the project layout and working rules, so an agent can generate, preview, export, and manage poster assets consistently.

Instructions file for Claude Code

Written for Claude Code: the file is CLAUDE.md. Also seen: reads .claude/ paths; mentions Claude Code.

This is dabodamjan/poster-maker's own configuration. It tells Claude Code how to work on poster-maker 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 poster-maker configures →

Reuse

Borrowing it

Nothing to install: this file belongs to dabodamjan/poster-maker. 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/dabodamjan/poster-maker/main/CLAUDE.md
Clone the repo
git clone --depth 1 https://github.com/dabodamjan/poster-maker

Made for: Claude Code.

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README.md
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Per session 1,198 This file is loaded in full into every session.
When invoked 1,198 The same file — it is already loaded in full.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
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 5.1 $0.01198 $0.01198
Opus 5.5 $0.00479 $0.00479
Sonnet 5.5 $0.00240 $0.00240
Haiku 4.5 $0.00120 $0.00120

Measured 2mo ago against content hash 5645f600e65b, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

poster-maker CLAUDE.md 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 2mo 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.

CLAUDE.md · 82 lines

How it starts

The opening of the file, as written. The whole thing — 82 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Poster Maker

Project Purpose

A marketing poster generator powered by Claude Code. Creates visually striking posters as single HTML/CSS files, exportable to PNG/PDF. Works for any type of poster — event flyers, product launches, conference talks, DJ gigs, meetups, sale announcements, or anything else.

Project Structure

posters/           HTML poster files (the output)
exports/           Exported PNG/PDF files (gitignored)
assets/            Images, logos, photos for use in posters
scripts/
  export.js        Playwright PNG/PDF export (auto-detects dimensions)
  screenshot.js    Playwright preview screenshots (auto-detects dimensions)
  dimensions.js    Shared body-CSS dimension parsing (px, mm, in)
  screenshot-url.js  Capture a LIVE URL at device viewports into assets/<slug>/ (GPU forced on for WebGL sites)
  frame-screenshot.js  Frame a screenshot on a social-ready canvas (screenshot-frame.html is its template)
  remove-bg.py     Background removal (requires rembg)
.claude/commands/
  setup.md         /setup — install dependencies and verify setup
  new-poster.md    /new-poster — generate a poster
  export-poster.md /export-poster — export to PNG/PDF
  remove-bg.md     /remove-bg — remove image background

Commands

  • /new-poster — main command. Generates a poster from a description. See the command file for full design principles, font pairings, and image handling.
  • /export-poster — export a poster to PNG or PDF using Playwright.
  • /remove-bg — remove background from an image using rembg (Python). Installs on first use.

Key Rules

  • Posters are single HTML files with all CSS inline — the only external references are Google Fonts and images from assets/.
  • Body dimensions are the poster size (default 1080x1920) with no scroll/margin.
  • Images go in assets/, organized in subfolders per project (e.g., assets/deep-frequencies/, assets/nexus-launch/). Referenced via relative paths from poster files (../assets/project-name/photo.jpg).
  • Always include @media print with -webkit-print-color-adjust: exact.
  • After creating/editing a poster, open it with open posters/<filename>.html.
  • Always take a Playwright screenshot after creating/editing a poster: node scripts/screenshot.js posters/<filename>.html — then read the PNG to visually verify the result before presenting to user.
  • Iterate with the user until they're happy, then offer export.

Read the full file on GitHub · 82 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. 2mo ago First seen · 82 lines · 1,198 tokens per session scan A 5645f600e65b

Subscribe to this mod's changes

poster-maker CLAUDE.md is an instructions file published in the GitHub repository dabodamjan/poster-maker (11 stars, last pushed 2mo ago), licensed MIT. It adds 1,198 tokens to every session, about $0.0048 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 2026-08-31.

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