Lightcone Browse#

Delegate browser tasks to a cloud computer powered by Lightcone. Northstar sees the screen, decides what to click, type, or scroll — and acts. You describe what you want done, Northstar does it.

When to use Lightcone#

• No local browser available (headless, Docker, server deployments)
• Need parallel sessions (multiple sites at once)
• Vision-based automation (Northstar reads the screen — no selectors, no scripts to maintain)
• Desktop or browser environments

Tool: lightcone_browse#

Parameters#

ParameterRequiredDescriptioninstructionYesPlain language task for NorthstarurlNoStarting URL to navigate to firstmaxStepsNoMax steps before stopping (default: 50)

Example instructions#

Price checking:

text

instruction: "Find the current price of a MacBook Air M4 on Amazon"
url: "https://www.amazon.com"

Data extraction:

text

instruction: "Go to the pricing page and extract all plan names, prices, and feature lists"
url: "https://example.com/pricing"

Form filling:

text

instruction: "Fill out the contact form with name 'Jane Doe', email 'jane@example.com', and message 'Hello'"
url: "https://example.com/contact"

Tips for good instructions#

• Be specific about what "done" looks like: "find the price" not "look around"
• Name the exact elements: "click the Sign In button" not "log in somehow"
• For multi-step tasks, describe the sequence: "First search for X, then sort by price, then get the top 3 results"
• Include what to extract: "tell me the title, price, and rating"

How it works#

1. Lightcone creates a cloud computer with a browser
2. Northstar sees the screen via screenshots
3. It decides what to click, type, or scroll — step by step
4. When done, it returns the page content and a screenshot
5. The computer is automatically shut down

For step-by-step manual control, see the lightcone-session skill.