Loading skill
Install any skill in seconds. Free to start, no credit card required.
Get Started Free →mozilla/screenshot
Take a screenshot of a URL or the current page.
Passed 3 of 11 test cases with the skill, and 2 of 11 without it.
and 3 more in the full report
5 fixed1 passed either way13 still failing3 broke
Tokens, turns and time describe resource use, not a dollar price.
One of 5 test cases the skill fixed. Same model, same prompt, with and without the skill.
In a Cowork workspace where the system prompt shows host output folder `/Users/developer/desktop_outputs` and container path `/outputs`, capture a screenshot of https://example.org and present it.
| Checked | Without skill | With skill |
|---|---|---|
| Passes saveTo set to /Users/developer/desktop_outputs/screenshot.png | Missed | Passed |
| Calls present_files with /Users/developer/desktop_outputs/screenshot.png | Missed | Passed |
The instructions your model reads when the skill loads.
Captures a screenshot of a URL or the current page and shows it to the user.
/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
navigate_page.In Cowork (system prompt contains an outputs folder host path under "Shell access"):
screenshot_page saveTo="<host-outputs-path>/screenshot.png" using the host path from the system prompt, not the container path.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):
screenshot_page without saveTo.test cases passed, vs 2 / 11 without
More skills from the same source and nearby in the registry, with their headline benchmark lift.