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@mozilla/screenshot

B

Take a screenshot of a URL or the current page. Use when the user asks to capture, screenshot, or photograph a web page or URL.

skillclaude

Install

agr install @mozilla/screenshot --target claude

Writes 1 file into .claude/skills/, pinned to git-6b078930.

  • .claude/skills/screenshot/SKILL.md

Document


name: screenshot description: Take a screenshot of a URL or the current page. Use when the user asks to capture, screenshot, or photograph a web page or URL. argument-hint: [url or uid]

/firefox-devtools-mcp:screenshot

Captures a screenshot of a URL or the current page and shows it to the user.

Usage

/firefox-devtools-mcp:screenshot https://example.com   # Navigate then screenshot
/firefox-devtools-mcp:screenshot                       # Screenshot current page
/firefox-devtools-mcp:screenshot <uid>                 # Screenshot specific element

Steps

  1. Navigate if a URL was given: call navigate_page.
  2. Take the screenshot using the method that matches your environment:

In Cowork (system prompt contains an outputs folder host path under "Shell access"):

  • Call screenshot_page saveTo="<host-outputs-path>/screenshot.png" using the host path from the system prompt, not the container path.
  • Load and call present_files with that same path so the user receives a clickable file card.

In Claude.ai chat or Claude Desktop (no outputs folder in system prompt):

  • Call screenshot_page without saveTo.
  • Your final response must include the actual image returned — not a description of it. The user cannot see tool call outputs, only what you include in your reply.

Trustgrade B

  • passBody integrity

    Whether the stored document is plausibly the kind of file the artifact declares, rather than something fetched by mistake.

  • passType matchnot applicable to this artifact type

    Whether the artifact is really the kind of thing its metadata claims it is.

  • passFreshness

    How long since the source repository was last pushed to.

  • passPrompt injection

    Scans the artifact's own text for instructions aimed at your agent rather than at you.

  • warnLicenseno SPDX license detected

    Whether the source repository declares an SPDX license permissive enough to redistribute.

How the grade is calculated

Each check contributes 0 points when it passes, 1 when it warns, and 2 when it fails. The total maps to a letter:

  • Aevery check passed
  • Bone warning
  • Ctwo warnings
  • Dprompt injection or body integrity failed, or three warnings
  • Fone of those failed, and something else is wrong

These are automated hygiene checks, not a security audit, and not a dependency or vulnerability scan. A grade of A means nothing was flagged — not that the artifact is safe.

Versions

  • git-6b07893014922026-07-31