What is screenshot-studio?

A screenshot-refresh workflow for the Pisper product site and README. It captures selected pages from an isolated app instance using fictional demo data.

It is for regenerating referenced web screenshots in docs/shots/ at the required image size, while leaving command-line and demo assets untouched unless requested by the workflow.

It keeps documented product screenshots aligned with the current interface without changing the product code or exposing real user data.

screenshot-studio — Skill for Claude Code by ling-kong-ran

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.

Any agent

npx skills add ling-kong-ran/pisper --skill screenshot-studio

Clone the repo

git clone --depth 1 https://github.com/ling-kong-ran/pisper

Made for: Claude Code.

Wrote 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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/ling-kong-ran/pisper/screenshot-studio/github.svg)](https://agentmods.dev/skills/ling-kong-ran/pisper/screenshot-studio)

Your own site

<a href="https://agentmods.dev/skills/ling-kong-ran/pisper/screenshot-studio"><img src="https://agentmods.dev/badge/skills/ling-kong-ran/pisper/screenshot-studio/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/ling-kong-ran/pisper/screenshot-studio"><img src="https://agentmods.dev/badge/skills/ling-kong-ran/pisper/screenshot-studio.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 80 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 1,777 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits

NVIDIA SkillSpector warn 7 Sept 2026

SkillSpector: 1 finding, up to medium

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

medium Rogue Agent · line 5
Skill establishes unauthorized persistence across sessions via cron jobs, startup scripts, or state files. Session persistence allows an attacker to maintain access beyond the current interaction.

Fix: Remove any persistence mechanisms (cron jobs, startup scripts, state files). Skills should not maintain state across sessions without explicit user consent.

How audits are shown

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.

Model	Per session	Once invoked
Fable 5.1	$0.00080	$0.01777
Opus 5	$0.00040	$0.00889
Sonnet 5	$0.00016	$0.00355
Haiku 4.5	$0.00008	$0.00178

Measured 5d ago against content hash 261744e276c7, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

screenshot-studio 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 5d ago.

The scan reads SKILL.md. This mod also ships 7 executable files (scripts/browser-launch.mjs, scripts/capture-screenshots.mjs, scripts/screenshot-config.mjs, …), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

.pisper/skills/screenshot-studio/SKILL.md · 123 lines

How it starts

The opening of the file, as written. The whole thing — 123 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Screenshot Studio

Refresh the screenshots in docs/shots/ so the product site and README previews match the current UI. Do not change product code; only capture and replace images (and the references that name them, when needed).

When to use

Invoke only when the user explicitly asks:

/skill:screenshot-studio

This skill is for screenshot refresh work only. Do not run it during ordinary implementation or review.

Output invariants

Every current Web screenshot PNG is exactly 2558x1380 (viewport 1279x690 at deviceScaleFactor 2); its WebP thumbnail is 1600x864.
The current Web set is derived from the shots/web/*.webp references in docs/index.html and docs/show.html; deleted scenes are not recreated.
cli.png, cli-chat.png, the mobile assets, and other non-Web/demo assets are left untouched.
No real user data, provider keys, or machine paths may appear. Use only fictional demo content and repository-relative paths.
The isolated instance must never read the user's ~/.pisper/agent or the port-5173 dev server state.

Workflow

1. Start an isolated dev instance

node .pisper/skills/screenshot-studio/scripts/start-isolated-server.mjs --reset

This stops any prior Skill-owned process, clears only the configured screenshot agent/run directories, starts runtime/index.mjs, and waits for /api/health. Defaults are port 5180 and repository-relative directories under generated/; no project path is hard-coded.

2. Seed fictional demo data

node .pisper/skills/screenshot-studio/scripts/seed-demo-data.mjs

Creates through the real runtime APIs (never by editing the UI): six sessions, three with injected conversation transcripts, three empty; link, Markdown, and generated-image assets; a memory space with nodes; schedules; workflows (one published); and a configured OpenAI-compatible provider. Writes the created ids to generated/screenshot-run/state.json.

2b. Restart the isolated instance

Read the full file on GitHub · 123 lines

Files

What ships with it

8 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.

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.

5d ago Changed 261744e276c7
11d ago First seen · 123 lines · 80 tokens per session scan A 48fceb35215f

Subscribe to this mod's changes

screenshot-studio is a skill published in the GitHub repository ling-kong-ran/pisper (285 stars, last pushed today), licensed MIT. It adds 80 tokens to every session and 1,777 once invoked, about $0.0004 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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