v0.2.0

What's New

Snapshot Diff

browser_snapshot_diff — returns only added/removed lines since the last snapshot, drastically reducing token usage after actions.

Depth Limiting & Selector Scoping

browser_snapshot({ depth: N }) limits ARIA tree depth for large pages. browser_snapshot({ selector: "#main" }) scopes to a specific DOM element.

Content Boundary Markers

All page-derived content wrapped in --- PAGE CONTENT START/END --- markers to prevent prompt injection.

Auto-Save Session Persistence

Browser cookies and localStorage auto-saved after navigations and actions with debounced writes (3s default).

Configurable Output Limits

XBOT_MAX_OUTPUT env var (default 40000 chars) and per-call maxLength parameter with line-boundary-aware truncation.

Testing

• 211 unit tests across 9 suites
• 32 Playwright integration tests
• Expanded coverage for diff, depth limiting, boundary markers, auto-save, and output truncation

Full Changelog: v0.1.0...v0.2.0

v0.1.0

What's New

Observability Tools (Phase 1A)

• browser_console — direct console message access with type filtering
• browser_network — network request capture with jsonOnly filter for API data
• browser_screenshot — visual screenshot capture

Compact Snapshots (Phase 1B)

• browser_snapshot now accepts mode: full, compact (~90% smaller), or interactive (compact + context)

Automatic Selector Learning (Phase 2)

• Fallback selectors auto-promoted to primary on success
• Alternative selectors auto-generated when saving tools

Workflow Conditionals (Phase 3)

• assertVisible — check element visibility, store boolean
• if — branch on variables with then/else blocks
• retry — retry steps with configurable attempts and delay

Enhanced Anti-Detection (Phase 4)

• Fingerprint masking (webdriver, plugins, chrome.runtime)
• Human-like Bezier curve mouse movement (humanLike: true)
• User-agent rotation pool

Testing

• 131 new unit tests across 5 test suites
• Integration tests for all new MCP tools
• All tests passing

Full Changelog: v0.0.68...v0.1.0