# Comet

AI agent · Agent browsers · Acts for a person · operated by perplexity

**Identity:** Doesn’t identify itself.

## How to recognise it

- Leaves page markers while it works: `#pplx-agent-overlay-stop-button`

## With Double Agent

Sessions from Comet are labelled `agent` with `agent_id: perplexity.comet`, and tagged in your analytics. Nothing is blocked unless you choose to. Install: https://doubleagent.so/install.md

Source: https://aiagentindex.mit.edu/2025/comet