An image-background removal tool that uses rembg, an artificial-intelligence image-processing program, to isolate a subject and create a transparent PNG.

Use it to remove a background, isolate a person or object, or prepare an image with transparency.

It removes the need to cut out subjects by hand and can keep the subject separate from the original background.

remove-bg — Skill for Claude Code and Codex by hmaurus: An image-background removal tool that uses rembg, an artificial-intelligence…

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/hmaurus/masterclaude/remove-bg

Any agent

npx skills add hmaurus/masterclaude --skill remove-bg

Clone the repo

git clone --depth 1 https://github.com/hmaurus/masterclaude

Made for: Claude Code, Codex.

Or install image-tools, the plugin that ships this one along with the rest of its 4 skills.

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/hmaurus/masterclaude/remove-bg.svg)](https://agentmods.dev/skills/hmaurus/masterclaude/remove-bg)

Your own site

<a href="https://agentmods.dev/skills/hmaurus/masterclaude/remove-bg"><img src="https://agentmods.dev/badge/skills/hmaurus/masterclaude/remove-bg.svg" alt="Measured on agentmods" height="20"></a>

Per session 80 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 920 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.

Model	Per session	Once invoked
Fable 5	$0.00080	$0.00920
Opus 5	$0.00040	$0.00460
Sonnet 5	$0.00016	$0.00184
Haiku 4.5	$0.00008	$0.00092

Measured 3d ago against content hash 8431abaab3b9, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

remove-bg 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 3d ago.

The scan reads SKILL.md. This mod also ships 2 executable files (scripts/remove_bg.py, scripts/setup.sh), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

plugins/image-tools/skills/remove-bg/SKILL.md · 102 lines

How it starts

The opening of the file, as written. The whole thing — 102 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Remove Background de Imagem

Remove o fundo de imagens usando rembg (modelo U²-Net), instalado em virtualenv isolado em ~/venvs/rembg/.

Setup

O rembg fica em ~/venvs/rembg/ para não poluir o sistema. Na primeira vez, o setup precisa ser executado.

Verificar se já está instalado

test -f ~/venvs/rembg/bin/rembg && ~/venvs/rembg/bin/rembg --version || echo "PRECISA_INSTALAR"

Instalar (se necessário)

bash ${CLAUDE_PLUGIN_ROOT}/skills/remove-bg/scripts/setup.sh

Na primeira execução do rembg, o modelo U²-Net (~170MB) é baixado automaticamente para ~/.u2net/. Avisar o usuário sobre esse download.

Uso

O script wrapper fica em ${CLAUDE_PLUGIN_ROOT}/skills/remove-bg/scripts/remove_bg.py.

Imagem única (saída automática — padrão)

Sem argumento de saída, renomeia a original para _original e salva a imagem sem fundo com o nome original:

# foto.png → foto_original.png (com fundo) + foto.png (sem fundo)
~/venvs/rembg/bin/python ${CLAUDE_PLUGIN_ROOT}/skills/remove-bg/scripts/remove_bg.py foto.png

Com saída explícita

~/venvs/rembg/bin/python ${CLAUDE_PLUGIN_ROOT}/skills/remove-bg/scripts/remove_bg.py entrada.png saida.png

Com modelo para pessoas

~/venvs/rembg/bin/python ${CLAUDE_PLUGIN_ROOT}/skills/remove-bg/scripts/remove_bg.py retrato.jpg -m u2net_human_seg

Com alpha matting (bordas mais suaves)

~/venvs/rembg/bin/python ${CLAUDE_PLUGIN_ROOT}/skills/remove-bg/scripts/remove_bg.py foto.png -a -ae 10 -ab 10

Batch (pasta inteira)

# Com pasta de saída separada
~/venvs/rembg/bin/python ${CLAUDE_PLUGIN_ROOT}/skills/remove-bg/scripts/remove_bg.py pasta_entrada/ pasta_saida/

# In-place (renomeia originais para _original, salva limpas no nome original)
~/venvs/rembg/bin/python ${CLAUDE_PLUGIN_ROOT}/skills/remove-bg/scripts/remove_bg.py pasta/

Opções

Flag	Descrição
`-m <modelo>`	Escolher modelo (ver tabela abaixo)
`-a`	Ativar alpha matting (bordas mais suaves)
`-ae <N>`	Erosão do alpha matting (padrão: 10)
`-ab <N>`	Blur do alpha matting (padrão: 10)

Read the full file on GitHub · 102 lines

Files

What ships with it

2 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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.

3d ago First seen · 102 lines · 80 tokens per session scan A 8431abaab3b9

Subscribe to this mod's changes

remove-bg is a skill published in the GitHub repository hmaurus/masterclaude (2 stars, last pushed 1mo ago), licensed MIT. It adds 80 tokens to every session and 920 once invoked, about $0.0004 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 2026-08-31.

Creative and media

general-video

Author or edit a custom HyperFrames composition when no specialized workflow fits, or when BRIEF.md sets flow: companion. Use for longer or multi-scene pieces, brand and sizzle reels, montages, static loops, static title cards, footage remixes, and freeform builds. Use motion-graphics instead for a short unnarrated…

heygen-com/hyperframes · 92 tokens

remove-bg