PageBolt

About PageBolt

PageBolt is a web-capture API that generates narrated demo videos from a series of steps. It records screen walkthroughs, writes a script, converts it to spoken audio using AI voices, and adds word-synced captions and on-screen annotations, returning the result as an MP4. The service offers 10+ AI voices across 30+ languages, with adjustable narration styles (e.g., Professional, Friendly, Energetic).

The product consists of eleven capture APIs accessible through a single API key over plain HTTP, with official SDKs for Node.js and Python. It supports hands-off, automated capture through an MCP integration (compatible with tools like Claude, Cursor, and Windsurf) that lets an AI agent trigger recordings, as well as a GitHub Action for CI/CD pipelines that can record and post narrated walkthroughs directly to pull request threads.

It is aimed at developers and teams who want to automate the creation of product demo or walkthrough videos, such as posting a narrated demo to a pull request when it's opened. A free tier includes 100 requests per month with no credit card required; paid plans include all 11 APIs, with upgrades adding narration features, longer videos, and additional formats.

Key features

• Records narrated screen-capture walkthroughs and returns an MP4
• AI voice narration with 10+ voices and 30+ languages
• Word-synced captions and on-screen annotations burned into video
• 11 capture APIs under a single API key with Node.js and Python SDKs
• MCP server integration for Claude, Cursor, and Windsurf
• GitHub Action for posting narrated demos to pull requests

Frequently asked questions