core

# agent-browser core Fast browser automation CLI for AI agents. Chrome/Chromium via CDP, no Playwright or Puppeteer dependency. Accessibility-tree snapshots with compact `@eN` refs let agents interact with pages in ~200-400 tokens instead of parsing raw HTML. Most normal web tasks (navigate, read, click, fill, extract, screenshot) are covered here. Load a specialized skill when the task falls outside browser web pages — see [When to load another skill](#when-to-load-another-skill). ## The core loop Open the page and check the response for a WebMCP summary. If an advertised tool directly matches the authorized task, prefer that tool to reconstructing the same operation with DOM interactions. Fetch only its metadata, check the input schema and intended effect against the user request, then invoke it: ```bash agent-browser open <url> agent-browser webmcp list <tool> --frame <frame-id> --json agent-browser webmcp invoke <tool> --frame <frame-id> --params '{"key":"value"}' ``` Browser responses automatically announce WebMCP tools on first discovery and when the catalog changes. Summaries contain only names, brief descriptions, origins, and frame IDs. Choose a relevant tool, then fetch its full schema with `agent-browser webmcp list <tool> --frame <frame-id> --json` before invoking it. Schemas and annotations are never included proactively. Unchanged catalogs and pages without tools add no context. Omission means no update; an empty or unavailable update invalidates earlier t...