record-demo

record-demo is a skill for Claude Code from mcpware/pagecast. It costs 64 tokens per session (2,456 once invoked), scanned A, original, MIT.

A workflow for recording a polished product-demo GIF or MP4 from a browser, with automatic zooming on important interactions. It reads the product documentation, plans the story, records the demo, and reviews the result.

In plain words
What is it for?
Use it to create narrated-by-actions demos of software features, especially for README files and product websites.
Why use it?
It turns a sequence of browser actions into a focused demonstration suitable for a GitHub README or product page.

Skill for Claude Code

Written for Claude Code: argument-hint in frontmatter.

Part of the Pagecast plugin — 1 skill, 1 MCP server shipped together

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 skills/mcpware/pagecast/record-demo
Any agent
npx skills add mcpware/pagecast --skill record-demo
Clone the repo
git clone --depth 1 https://github.com/mcpware/pagecast

Made for: Claude Code.

Or install Pagecast, the plugin that ships this one along with the rest of its 1 skill, 1 MCP server.

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.

agentmods badge for record-demo

README.md
[![agentmods](https://agentmods.dev/badge/skills/mcpware/pagecast/record-demo.svg)](https://agentmods.dev/skills/mcpware/pagecast/record-demo)
Your own site
<a href="https://agentmods.dev/skills/mcpware/pagecast/record-demo"><img src="https://agentmods.dev/badge/skills/mcpware/pagecast/record-demo.svg" alt="Measured on agentmods" height="20"></a>
Per session 64 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,456 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. 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 5.1 $0.00064 $0.02456
Opus 5 $0.00032 $0.01228
Sonnet 5 $0.00013 $0.00491
Haiku 4.5 $0.00006 $0.00246

Measured 6d ago against content hash 97aae90b9ad7, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-05, from the pricing page.

Security

Grade A, and why

record-demo scanned grade A with 1 finding 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 6d 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

curl -s http://localhost:<port> | head -1 # verify
.claude/skills/record-demo/SKILL.md · 260 lines

How it starts

The opening of the file, as written. The whole thing — 260 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Record Demo — Storytelling Product Demo with Auto-Zoom

Record a polished, story-driven product demo using Pagecast's auto-zoom pipeline.

This is NOT random clicking. You are a demo director — you plan the story, choreograph the interactions, and iterate until the output is GitHub-README quality.

Phase 1: Understand the Product

Before touching the browser, understand what you're demoing.

1a. Read the product

Read: <product-path>/README.md
Read: <product-path>/package.json

Extract:

  • One-liner: What does this product do? (1 sentence)
  • Pain point: What problem does it solve?
  • Key features: List 3-5 demo-worthy features, ranked by wow-factor
  • Target audience: Who is this README for? (developers, designers, managers)

1a.1. Sandbox mode (if available)

If the product has E2E tests with a sandbox/fixture setup, use that to create fake demo data instead of exposing real user data. Look for test fixtures that create temp directories with realistic content. Start the app pointing to the sandbox (e.g., HOME=/tmp/sandbox node app.js). This lets you safely demo ALL features including destructive ones like delete and move.

1b. Read the frontend (if web app)

Find the actual CSS selectors you'll need:

Read: <product-path>/src/ui/index.html   (or equivalent)
Read: <product-path>/src/ui/app.js       (or equivalent)

Extract:

  • Search input selector
  • Main list/card selectors
  • Button/action selectors
  • Navigation elements
  • Loading indicator (to know when page is ready)
  • Any data-* attributes useful for targeting

1c. Check existing demos

ls <product-path>/docs/demo* <product-path>/docs/screenshot* 2>/dev/null

If demos exist, review them to understand what was shown before and what can be improved.

Phase 2: Plan the Demo Story

A good demo tells a story: Problem → Discovery → Solution → Wow moment

Story structure (8-15 seconds total)

Beat Time What happens Why
1. Context 0-1s Show the full UI, let viewer orient First frame must work as static screenshot
2. Pain point 1-3s Show the problem the product solves "Look how messy/hard this is"
3. Feature A 3-6s First key interaction The primary use case
4. Feature B 6-9s Second interaction Shows breadth
5. Wow moment 9-12s The "aha" feature Most impressive capability
6. Result 12-15s Pause on the outcome Let viewer see what happened

Read the full file on GitHub · 260 lines

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. 6d ago First seen · 260 lines · 64 tokens per session scan A 97aae90b9ad7

Subscribe to this mod's changes

record-demo is a skill published in the GitHub repository mcpware/pagecast (44 stars, last pushed 5mo ago), licensed MIT. It adds 64 tokens to every session and 2,456 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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