helallao/perplexity-ai ? reverse-engineered prompt

Build me a Python tool for working with Perplexity from code, with both sync and async support, so I can send a question and get back a plain text answer easily.

I want it to support normal queries, streaming responses, file upload for document questions, retry handling, rate limiting, and good error messages. It should also include a browser based interface that can automate sign in and account setup using a Chrome profile, so I can use the app without doing everything manually. If it makes sense, add an MCP server too, so Claude Code or other MCP clients can use Perplexity as a tool.

Please keep it clean and well documented, with examples I can run right away, type hints, logging, and tests. If you need current details for any browser automation or MCP setup, look up the latest docs online.