@browserbasehq/mcp-server-browserbase

Browserbase Stagehand MCP Server by Browserbase

MCP server for AI web browser automation using Browserbase and Stagehand

Live Registry Versionv2.4.3Previous: v2.4.1Published 2026-01-23

Stability Grade

B (78/100)

90-Day Velocity

0 releases

Stable release cadence

Dependencies

8 direct

NPM manifest

License

Apache-2.0

Verified on NPM

Recommended Exact Pin: npx -y @browserbasehq/mcp-server-browserbase@2.4.3

NPM Registry ->GitHub Repo ->

TL;DR Verdict & Quick Citation Summary (2026-10-24)Source: AgentBreakWatch Live NPM Index

Browserbase Stagehand MCP Server (@browserbasehq/mcp-server-browserbase) is currently at v2.4.3 on NPM (published 2026-01-23), with a 90-day stability score of 78/100 (B) and HIGH schema drift risk across 0 releases in the past 90 days. v2.x consolidates raw Puppeteer tools into Stagehand-powered browserbase_stagehand_act, observe, and extract tools. Production teams should pin npx -y @browserbasehq/mcp-server-browserbase@2.4.3 rather than using unpinned @latest tags.

Breaking Changes & Tool Schema Drift Analysis

v2.x consolidates raw Puppeteer tools into Stagehand-powered browserbase_stagehand_act, observe, and extract tools.

Watched Exports / MCP Tool Signatures:

browserbase_session_createbrowserbase_stagehand_navigatebrowserbase_stagehand_actbrowserbase_stagehand_extract

Before (Deprecated / Unpinned Pattern)

{ "name": "browserbase_click", "arguments": { "selector": "#login" } }

After (Verified v2.4.3 Pattern)

{ "name": "browserbase_stagehand_act", "arguments": { "action": "Click the login button" } }

Frequently Asked Questions: @browserbasehq/mcp-server-browserbase

What is the latest version of @browserbasehq/mcp-server-browserbase on NPM?

As of 2026-10-24, the latest stable version of @browserbasehq/mcp-server-browserbase (Browserbase Stagehand MCP Server by Browserbase) on NPM is v2.4.3, published on 2026-01-23. It has shipped 0 releases in the last 90 days.

Does @browserbasehq/mcp-server-browserbase v2.4.3 have breaking changes or MCP schema drift risk?

@browserbasehq/mcp-server-browserbase currently carries a HIGH schema drift risk rating with a Stability Score of 78/100 (Grade B). v2.x consolidates raw Puppeteer tools into Stagehand-powered browserbase_stagehand_act, observe, and extract tools.

How do I safely pin @browserbasehq/mcp-server-browserbase in production?

Avoid unpinned @latest tags in production agent configs. Pin the exact verified version using `npx -y @browserbasehq/mcp-server-browserbase@2.4.3` and monitor browserbase_session_create, browserbase_stagehand_navigate, browserbase_stagehand_act, browserbase_stagehand_extract for parameter or schema changes.

30-Min Registry & Schema Poller

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We poll NPM and browserbase/mcp-server-browserbase every 30 minutes. Get an email with the exact diff when @browserbasehq/mcp-server-browserbase ships a breaking release beyond v2.4.3.