Claude-Replay: Interactive HTML Players for AI Coding Sessions

Claude-replay is a command-line utility that turns Claude Code session logs into interactive, shareable HTML replays. The tool features a playback interface with speed controls, theme support, and automatic redaction of sensitive credentials. Because the output is a single, self-contained file, it is easily embeddable in documentation and blog posts without requiring external hosting.

Key Points

• Converts Claude Code JSONL transcripts into self-contained, interactive HTML files with no external dependencies.
• Features a terminal-style player with playback controls, speed adjustment, and toggleable thinking/tool blocks.
• Includes a built-in safety mechanism that automatically redacts sensitive information like API keys and database strings.
• Supports multiple built-in themes and custom CSS for easy integration into documentation or personal blogs.
• Optimized for performance using native browser decompression to reduce output file size by 60-70%.

Sentiment

Hacker News is broadly supportive and enthusiastic about the tool. The community quickly validates use cases the author had not fully articulated, particularly around team training and knowledge transfer. Skepticism exists but is a clear minority, and the author's engaged, responsive presence—including shipping a new feature mid-thread—reinforces positive reception.

In Agreement

• The tool is highly valuable for team onboarding and training, letting colleagues observe the full sequence of prompts and responses that lead to complex outcomes rather than just the final result
• Showing the back-and-forth 'prodding' of an AI session conveys prompting strategies that a raw text dump or terminal screenshot cannot communicate
• Useful for educators and students learning how to work with AI coding tools, particularly for non-engineers like product and UX who are unfamiliar with CLIs
• Interactive step-through format is especially valuable for hardware or scientific agent workflows where the tool-call sequence is as important as the output
• The project has startup potential as a 'Loom for AI coding sessions,' with possible workspace/permission layers for team sharing

Opposed

• Watching session replays has unclear utility; a well-formatted text dump conveys the same information without requiring time to watch
• HTML files are harder to share in conversational tools like Slack compared to a video file or link
• The realtime experience may primarily benefit visual learners, with limited overlap with the developer audience already comfortable reading code