screenshot

A command for capturing a URL or document as an image and inspecting what is visible. It saves the page in tiles so long pages can be read from top to bottom.

In plain words
What is it for?
Use it to review website layouts, screenshots, and other visual documents from a URL.
Why use it?
It helps check a page's visual appearance when reading its source or text alone is not enough. It also reports when only part of the page was captured.

Command

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 commands/startrail-org/pixelrag/screenshot
Clone the repo
git clone --depth 1 https://github.com/StarTrail-org/PixelRAG
Per session 12 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 192 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.

ModelPer sessionOnce invoked
Fable 5 $0.00012 $0.00192
Opus 5 $0.00006 $0.00096
Sonnet 5 $0.00002 $0.00038
Haiku 4.5 $0.00001 $0.00019

Measured 3d ago against content hash d445d6c85988, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

screenshot 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.

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.

plugin/commands/screenshot.md · 12 lines

What it actually says

  1. Run: pixelshot $ARGUMENTS --output /tmp/pixelbrowse --tile-height 1568
  2. Read /tmp/pixelbrowse/<domain>.png.tiles/tiles.json, then read every tile it lists with the Read tool (they are tile_NNNN.jpg in that same directory, top of the page first). If the manifest says "complete": false, the page was only partly captured — report that alongside what you saw.
  3. If text is too small to read, crop with Pillow (always available — it's a pixelshot dependency): python3 -c "from PIL import Image; Image.open('<tile>').crop((x1,y1,x2,y2)).save('/tmp/pixelbrowse/crop.png')"
  4. Report what you see.
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.

  1. 3d ago First seen · 12 lines · 12 tokens per session scan A d445d6c85988

Subscribe to this mod's changes

screenshot is a command published in the GitHub repository StarTrail-org/PixelRAG (9,837 stars, last pushed 3d ago), licensed Apache-2.0. It adds 12 tokens to every session and 192 once invoked, about $0.0001 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 2026-08-30.