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Modlens

Modlens is an agent skill (a SKILL.md file) from liustack/modlens. Plug-in vision for text-only models. Hard rule: when a file path or URL with an image extension (.png, .jpg, .jpeg, .webp, .gif, .heic, .heif) appears anywhere in the conversation (typed by the. It works with Claude Code, Codex and OpenCode and has 4,143 GitHub stars.

github.com/liustack/modlens/skills/modlens (opens in a new tab)

  • Needs API key
  • Coding
  • Actively maintained
View on GitHub (opens in a new tab)

Add this skill

Claude

Claude Code loads skills from ~/.claude/skills/ (all projects) or .claude/skills/ (one project):

git clone --depth 1 https://github.com/liustack/modlens.git
cp -r modlens/skills/modlens ~/.claude/skills/modlens   # personal, or .claude/skills in a project

In the Claude apps, zip the modlens folder and upload it under Customize > Skills > + > Upload a skill (code execution must be on).

ChatGPT / Codex

Codex reads skills from .agents/skills/ in a repo or ~/.agents/skills/ for every project:

git clone --depth 1 https://github.com/liustack/modlens.git
cp -r modlens/skills/modlens .agents/skills/modlens   # repo; ~/.agents/skills for all projects

Standalone skills also load in the ChatGPT desktop app.

Cursor

Cursor loads skills from .cursor/skills/ (or ~/.cursor/skills/) and also reads .claude/skills/:

git clone --depth 1 https://github.com/liustack/modlens.git
cp -r modlens/skills/modlens .cursor/skills/modlens   # project; ~/.cursor/skills for all projects

Source (checked Oct 7, 2026): code.claude.com/docs/en/skills (opens in a new tab), support.claude.com/en/articles/12512180-using-skills-in-claude (opens in a new tab), learn.chatgpt.com/docs/build-skills (opens in a new tab), cursor.com/docs/context/skills (opens in a new tab)

What this skill does

Plug-in vision for text-only models. Hard rule: when a file path or URL with an image extension (.png, .jpg, .jpeg, .webp, .gif, .heic, .heif) appears anywhere in the conversation (typed by the user, injected as a [Image: source: ] line, or inside a tag) and you cannot see that image's content, run this skill on it before any other approach: no self-built OCR, no PIL, no tesseract. Also triggers on pasted-image placeholders such as [Image #1] and [Unsupported Image].

When it triggers

  • user, injected as a [Image: source: ] line, or inside a tag) and you cannot see that image's content, run this skill on it before any other approach: no self-built OCR, no PIL, no tesseract.
  • triggers on pasted-image placeholders such as [Image #1] and [Unsupported Image].
  • use when the user asks how to install, configure, or switch modlens providers (Gemini API key, OpenAI-compatible endpoints, Claude API or Claude Code CLI).

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FAQ

Modlens FAQ

Still curious? Email info@appsgit.com.

What is the Modlens skill?

Modlens is an agent skill (a SKILL.md file) from liustack/modlens. Plug-in vision for text-only models. Hard rule: when a file path or URL with an image extension (.png, .jpg, .jpeg, .webp, .gif, .heic, .heif) appears anywhere in the conversation (typed by the. It works with Claude Code, Codex and OpenCode and has 4,143 GitHub stars. Its SKILL.md lives at github.com/liustack/modlens/skills/modlens.

How do I install the Modlens skill?

Copy the modlens folder (the one containing SKILL.md) into ~/.claude/skills/ for Claude Code, .agents/skills/ for Codex or .cursor/skills/ for Cursor. The agent picks it up automatically when a task matches its description.

Is the Modlens skill free?

Yes. The repository is open source under the MIT license. The skill mentions an API key or token for an external service, which may need its own account.

Is Modlens maintained?

The repository's most recent commit was on Oct 4, 2026. Its latest release is v3.26.6. appsgit only lists skills from repositories with a commit in the last six months.