---
type: entity
subtype: tool
title: "Browserbase"
description: "Browser-automation company Cole partnered with; its Stagehand framework and Director platform bring self-correcting web automation on top of Playwright."
resource: "https://browserbase.com"
tags: [browser-automation, self-correction, remote-sessions]
videos: [the-only-ai-tech-stack-you-need-in-2026, claude-code-web-just-dropped-but-i-already-built-something-better-with-codex, ai-code-that-fixes-itself-an-mcp-you-can-try-now]
created: 2026-07-21
updated: 2026-07-21
---

# Browserbase

Browserbase is the browser-automation company Cole reaches for when he wants an agent to control a live browser for him rather than run a deterministic script. He is unequivocal about the fit: "When I want to take these things further and have an agent control a browser for me live, that is when I will use Browserbase. And it is a beautiful tool" [0:20:19]. Its platform runs remote browser sessions for agents and adds the [self-correction](../../concepts/self-correction.md) that plain scripting lacks.

## What it is

At its core Browserbase is "a platform for running these remote browser sessions for agents" [0:08:00]. Because the session is remote and observable, you can watch an agent work in real time: as Cole demonstrates with [Codex](./codex.md) validating a website, "we can see its live session in a Browserbase looking at everything that it's viewing" [0:07:46]. On top of that runtime sit its frameworks. Cole calls out its "open-source browser automation framework called Stagehand which is definitely worth looking into" [0:08:03], and its Director platform for building automations. He rates the company highly, saying "another really good example is Browser Automations thanks to a platform called Browserbase. And man, this is a one-of-a-kind company" [0:07:44].

## How Cole uses it

Browserbase is Cole's escalation path above [Playwright](./playwright.md). Playwright remains his deterministic default, but its silent failures, where an action quietly does not work with no error raised, are exactly what Browserbase's self-correcting agents are built to handle. He uses it for live agent-driven validation, for example when an AI coding agent checks a deployed website through a watchable remote session. This makes it a key building block for "code that fixes itself," where an agent observes the browser, notices something is wrong, and retries. Cole has a partnership with Browserbase, which he discloses.

## Realizes

- [Self-Correcting Agents](../../concepts/self-correction.md) - Feeding tool errors and results back to the model so it can reason about mistakes, avoid repeating calls, and retry until it gets the action right.

## Contrasts with

- [Playwright](./playwright.md) - Cole's deterministic multi-browser web automation tool, whose MCP server lets coding assistants visually validate frontend changes.

## Works with

- [Codex](./codex.md) - OpenAI's cloud-based software-engineering agent integrated with GitHub, plus a Codex CLI.
- [QA Tech](./qa-tech.md) - AI testing platform whose agents crawl your deployed site and generate/evolve regression test cases as the codebase grows (has a free tier).
- [Stagehand](./stagehand.md) - Browserbase's open-source browser-automation framework, exposed as an MCP server so a coding agent can navigate a deployed site and validate its own work.

## Related

- [Validation](../../concepts/validation.md) - Building explicit checks into agentic workflows so the AI verifies its own output against real success criteria before moving on.
- [Guardrails](../../concepts/guardrails.md) - Constraints and checks that keep agents from hallucinating, going off the rails, or emitting unsafe output.
- [Knowledge Graphs](../../concepts/knowledge-graphs.md) - Structuring knowledge as entities and relationships (often temporal) so agents can traverse connections a vector store can't express.
- [Memory Systems](../../concepts/memory-systems.md) - Giving agents durable short- and long-term memory so conversations, user context, and facts persist across sessions and users.
- [Codebase Indexing](../../concepts/codebase-indexing.md) - Building a searchable index or map of a codebase so the agent can retrieve the right files instead of scanning everything.

## Sources

- [The ONLY AI Tech Stack You Need in 2026](../../sources/the-only-ai-tech-stack-you-need-in-2026.md) - "[0:20:19] When I want to take these things further and have an agent control a browser for me live, that is when I will use Browserbase. And it is a beautiful tool."
- [AI Code That Fixes Itself (An MCP You Can Try Now)](../../sources/ai-code-that-fixes-itself-an-mcp-you-can-try-now.md) - "[0:08:03] they have this open-source browser automation framework called Stagehand which is definitely worth looking into."
- [Claude Code Web JUST Dropped but I Already Built Something BETTER (with Codex!)](../../sources/claude-code-web-just-dropped-but-i-already-built-something-better-with-codex.md) - "[0:08:00] Browserbase is a platform for running these remote browser sessions for agents"
