What is Prophet used for?

Prophet is an open-source Chrome extension that puts Claude in the side panel to chat about pages and automate browser tasks, billed per use. It is a good fit for filling forms and extracting data from web pages, and summarizing pages without switching tabs.

Yes. Prophet has a free plan, and paid plans start at $9.99 per month.

Is Prophet open source?

No. Prophet is proprietary (closed-source) software. In the AI Tools category, open-source options include DeepSeek Cowork, OpenClaw and Nanobrowser.

What are some alternatives to Prophet?

Prophet competes with Perplexity Comet, ChatGPT Atlas and Dia.

Prophet: features, pricing and alternatives

About Prophet

Prophet is an open-source Chrome extension that adds Anthropic's Claude models to the browser side panel. You can chat about the page you are on, get summaries and answers, and let the assistant act on the page with 18 built-in browser tools that fill forms, click buttons, extract data and navigate. Three Claude models are offered, from Opus 5.5 and Sonnet 5.5 down to Haiku 4.5, with streaming responses.

Instead of screenshots, it reads pages through the accessibility tree, which the site says makes interactions faster and more deterministic. Page content is processed locally and only your messages go to Claude, and conversations are saved across sessions. The source code is on GitHub. Billing is pay per use, with credits that map to API costs rather than a flat monthly fee.

Key features

Claude chat in the Chrome side panel
18 built-in browser automation tools
Accessibility-tree page reading
Choice of Claude Haiku, Sonnet and Opus
Persistent chat history across sessions
Pay-per-use credits tied to API cost

Good fit for

Filling forms and extracting data from web pages
Summarizing pages without switching tabs

Tags: chrome-extension; claude; browser-automation; ai-assistant; open-source; side-panel

Prophet: questions and answers

What is Prophet used for?: Prophet is an open-source Chrome extension that puts Claude in the side panel to chat about pages and automate browser tasks, billed per use. It is a good fit for filling forms and extracting data from web pages, and summarizing pages without switching tabs.
Is Prophet free?: Yes. Prophet has a free plan, and paid plans start at $9.99 per month.
Is Prophet open source?: No. Prophet is proprietary (closed-source) software. In the AI Tools category, open-source options include DeepSeek Cowork, OpenClaw and Nanobrowser.
What are some alternatives to Prophet?: Prophet competes with Perplexity Comet, ChatGPT Atlas and Dia.