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.
npx skills add maystudios/claude-skills --skill gemini-web-media-analysisgit clone --depth 1 https://github.com/maystudios/claude-skillsWrote 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.
[](https://agentmods.dev/skills/maystudios/claude-skills/gemini-web-media-analysis)<a href="https://agentmods.dev/skills/maystudios/claude-skills/gemini-web-media-analysis"><img src="https://agentmods.dev/badge/skills/maystudios/claude-skills/gemini-web-media-analysis/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/maystudios/claude-skills/gemini-web-media-analysis"><img src="https://agentmods.dev/badge/skills/maystudios/claude-skills/gemini-web-media-analysis.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 5.1 | $0.00082 | $0.01971 |
| Opus 5.5 | $0.00033 | $0.00788 |
| Sonnet 5.5 | $0.00016 | $0.00394 |
| Haiku 4.5 | $0.00008 | $0.00197 |
Grade A, and why
gemini-web-media-analysis 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.
How it starts
The opening of the file, as written. The whole thing — 118 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Gemini web media analysis
Attaches a local image or video to the Gemini web composer and reads the reply. Verified working on gemini.google.com/app, Chrome, signed-in account, 2026-08-15.
Needs the claude-in-chrome MCP server — navigate, find, file_upload, computer, javascript_tool, get_page_text — and a Chrome profile already signed in to Gemini. No API key.
Two different paths. Use the right one:
| Media | Path |
|---|---|
| Video | find Gemini's own hidden input → file_upload into it → real click on the composer. See Video path |
| Image | Helper input → synthetic paste event. See Image path |
Never click "Dateien hochladen" / "Upload files" in the uploads menu. It opens the native OS file dialog, which blocks the whole automation session — no further tool call reaches the browser until a human dismisses it by hand.
Video path
- Navigate to
https://gemini.google.com/app, wait for load. - Real click the
+/ "Uploads & Tools" button in the composer. A JS.click()does not open the menu — it needs real pointer events. The hidden input only exists while this menu is open. find("hidden file input element")→ returns Gemini's own input ref. Make sure no helper input of yours is in the page — it shadows this search andfindreturns yours instead. Remove it first. Theuploadercomponent does not mount on every menu open. Iffindcomes back empty, close and re-open the menu and retry.file_uploadwith the absolute video path and that ref.- Real click into the composer text area. This is the trigger — Angular picks the file up on the next tick.
- Wait, and be patient. The thumbnail appears later than you expect — well beyond 8 s for a small clip. It renders as a still frame with a duration badge like
▶ 0:06. Do not conclude failure early. That mistake cost a whole session once: the upload had in fact worked and was reported as impossible. - Type the prompt and send, then poll
get_page_textfor the reply. Video analysis takes 30–60 s.
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.
- 2mo ago First seen · 118 lines · 82 tokens per session scan A 93fd1a205419
gemini-web-media-analysis is a skill published in the GitHub repository maystudios/claude-skills (26 stars, last pushed 2mo ago), licensed MIT. It adds 82 tokens to every session and 1,971 once invoked, about $0.0003 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 2026-08-30.
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