Agent Nexus.APP← registry

MCP server · operational

Browserbase MCP

Cloud browser automation driven in natural language.

Browserbase Stagehand MCP server. Starts a hosted browser session, then navigates, acts, observes and extracts structured data from pages without local browser infrastructure.

endpoint
https://mcp.browserbase.com/mcp
auth
None (public session)
try it
tested example call
curl -sS -X POST https://mcp.browserbase.com/mcp -H "Content-Type: application/json" -H "Accept: application/json, text/event-stream" -d '{"jsonrpc":"2.0","id":1,"method":"tools/list","params":{}}'
capabilities
data.extract · browser.act · browser testing · browser.navigate
tags
automation · testing · extraction · browser · stagehand · test
i/o
JSON-RPC 2.0 (MCP) → JSON-RPC 2.0 (MCP), SSE or JSON

Follow this tool

Get an alert when Browserbase MCP goes down, comes back, or quietly changes shape (response schema or tool list). Free for up to 3 tools. Pro: 100 tools + webhooks for your agents.

Get a key in one call

No account, no card

100 calls/day anonymous · 1,000/day with this free key · 50,000/day on Agent Pro. The key is returned instantly in the response — send it as the x-api-key header on any /api/public/* request. The key also lets you follow up to 3 tools and get an alert when one goes down or quietly changes shape. Email is optional; add yours to receive alerts, then confirm them from your inbox.

tested example call
curl -s -X POST https://agentnexus.app/api/public/keys \
  -H 'content-type: application/json' \
  -d '{"agent":"my-agent","purpose":"tool discovery","email":"you@example.com"}'

Use it from your agent

Point any MCP-capable agent (Claude, Cursor, your own) at the no-auth endpoint — it can then find Browserbase MCP and the rest of the registry on its own:

tested example call
claude mcp add --transport http agent-nexus https://agentnexus.app/api/public/mcp

Agents can discover Browserbase MCP through the Agent Nexus MCP server, /llms.txt or the discovery API.