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 xyva-yuangui/XyvaClaw --skill screenshot-sendergit clone --depth 1 https://github.com/xyva-yuangui/XyvaClawWrote 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/xyva-yuangui/xyvaclaw/screenshot-sender)<a href="https://agentmods.dev/skills/xyva-yuangui/xyvaclaw/screenshot-sender"><img src="https://agentmods.dev/badge/skills/xyva-yuangui/xyvaclaw/screenshot-sender/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/xyva-yuangui/xyvaclaw/screenshot-sender"><img src="https://agentmods.dev/badge/skills/xyva-yuangui/xyvaclaw/screenshot-sender.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00057 | $0.00855 |
| Opus 5 | $0.00028 | $0.00428 |
| Sonnet 5 | $0.00011 | $0.00171 |
| Haiku 4.5 | $0.00006 | $0.00085 |
Grade A, and why
screenshot-sender scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 12d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 100 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Screenshot Sender
Capture macOS screenshots and send them to Feishu chats.
Capabilities
- Full screen capture — capture the entire screen
- Window capture — capture a specific window (interactive selection)
- Region capture — capture a selected screen region
- Auto-send to Feishu — upload and send captured image to a chat
- Silent mode — no shutter sound
Usage
Capture screenshot (save to file)
# Full screen (silent, no shadow)
/usr/sbin/screencapture -x -o /tmp/screenshot_$(date +%s).png
# Interactive window selection
/usr/sbin/screencapture -x -w /tmp/screenshot_$(date +%s).png
# Interactive region selection
/usr/sbin/screencapture -x -s /tmp/screenshot_$(date +%s).png
# Capture to clipboard instead of file
/usr/sbin/screencapture -x -c
Capture and send to Feishu
Use the bundled script to capture + upload + send in one step:
# Capture full screen and send to default chat
node {baseDir}/scripts/capture-and-send.mjs
# Capture and send to specific chat
node {baseDir}/scripts/capture-and-send.mjs --chat "__GROUP_ID__"
# Send an existing image file
node {baseDir}/scripts/capture-and-send.mjs --file /path/to/image.png
# Capture with a message caption
node {baseDir}/scripts/capture-and-send.mjs --caption "这是当前屏幕截图"
Parameters
| Flag | Description | Default |
|---|---|---|
--mode |
Capture mode: full, window, region |
full |
--chat |
Feishu chat ID to send to | default group |
--file |
Send existing file instead of capturing | — |
--caption |
Text message to send with the image | — |
--output |
Save path (also keeps local copy when sending) | /tmp/screenshot_<ts>.png |
--no-send |
Only capture, don't send to Feishu | false |
macOS Permissions
First-time use requires Screen Recording permission:
- System Settings → Privacy & Security → Screen Recording → enable for Terminal / openclaw process
Workflow Examples
User says: "帮我截图当前屏幕发过来"
- Run:
/usr/sbin/screencapture -x -o /tmp/screenshot_$(date +%s).png - Upload image to Feishu via media API
- Send image message to chat
What ships with it
4 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 12d ago First seen · 100 lines · 57 tokens per session scan A f363c16e5a67
screenshot-sender is a skill published in the GitHub repository xyva-yuangui/XyvaClaw (21 stars, last pushed 1mo ago), licensed MIT. It adds 57 tokens to every session and 855 once invoked, about $0.0003 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.
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