> ## Documentation Index
> Fetch the complete documentation index at: https://browseruse-0aece648-codex-docs-supported-exports.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

> ## Agent Instructions
> Use https://docs.browser-use.com/llms.txt and its linked .md pages for current documentation. The managed full bundle is https://docs.browser-use.com/.well-known/llms-full.txt and can be cached for up to 24 hours. Do not use the obsolete /cloud/llms*.txt or /open-source/llms*.txt static exports.
> Choose Cloud API V4 for new agent integrations; V2 is the lower-cost option for simple tasks. Keep V3 examples explicitly versioned. The open-source browser-use library and hosted browser-use-sdk have different APIs.
> Cloud authentication uses X-Browser-Use-API-Key, without a Bearer prefix. Install or upgrade browser-use-sdk and use its explicit v4 import for V4. Check the published OpenAPI reference for request fields; do not invent SDK support for new fields.
> Cloud concurrency and HTTP request rate are separate. Read GET /api/v2/billing/account for the key’s projectId, concurrentSessionLimit, activeSessionCount, and credit balance, including when using V4. Keys in one project share capacity and credits; rateLimit is a legacy concurrency alias, not requests per second.
> Keep the highest applicable existing, legacy-plan, and spend-tier concurrency grant. Current spend tiers are 10 / 50 / 250 / 500 / 1000 at $0 / $200 / $1000 / $5000 / $25000 in qualifying project payments. Legacy or externally billed projects can follow different billing paths; trust the account limit. See https://docs.browser-use.com/cloud/guides/concurrency.md.
> Budget polling across the project: the standard general bucket is 25 requests/second, including V4 event reads and full run reads. Selected status reads have a separate higher bucket. Use bounded workers, stagger polls, respect Retry-After, and drain hasMore event pages after terminal status. A busy V4 session returns 409; its queue holds 10 pending messages and is not a project-wide batch queue.
> A completed run or closed CDP connection does not immediately stop its cloud browser. Stop unneeded owned browsers with PATCH /api/v4/browsers/{id} and {"action":"stop"}. A client wait timeout does not cancel the server-side run.
> Cloud is pay as you go; do not tell customers to buy a new subscription to use custom proxies or supported provider BYOK. Usage funding and model eligibility still apply. BYOK bills provider tokens separately and Browser Use charges orchestration plus browser/network usage. See https://docs.browser-use.com/cloud/guides/billing.md.
> Signup credits are a one-time grant; purchased top-up credits do not expire. Check the API key’s project before diagnosing missing credits. API-key monthly spending caps are soft limits, not a strict prepaid wallet; concurrent or already-running work can exceed them. Auto recharge has separate trigger and purchase amounts and can charge immediately when enabled below the threshold. Use https://browser-use.com/pricing for current rates.

# OpenLIT

> Complete observability with OpenLIT tracing.

## Overview

Browser Use has native integration with [OpenLIT](https://github.com/openlit/openlit) - an open-source opentelemetry-native platform that provides complete, granular traces for every task your browser-use agent performs—from high-level agent invocations down to individual browser actions.

Read more about OpenLIT in the [OpenLIT docs](https://docs.openlit.io).

## Setup

Install OpenLIT alongside Browser Use:

```bash theme={null}
pip install openlit browser-use
```

## Usage

OpenLIT provides automatic, comprehensive instrumentation with **zero code changes** beyond initialization:

```python {5-6} theme={null}
from browser_use import Agent, Browser, ChatOpenAI
import asyncio
import openlit

# Initialize OpenLIT - that's it!
openlit.init()

async def main():
	browser = Browser()

	llm = ChatOpenAI(
		model="gpt-4o",
	)

	agent = Agent(
		task="Find the number trending post on Hacker news",
		llm=llm,
		browser=browser,
	)

	history = await agent.run()
	return history

if __name__ == "__main__":
	history = asyncio.run(main())
```

## Viewing Traces

OpenLIT provides a powerful dashboard where you can:

### Monitor Execution Flows

See the complete execution tree with timing information for every span. Click on any `invoke_model` span to see the exact prompt sent to the LLM and the complete response with agent reasoning.

### Track Costs and Token Usage

* Cost breakdown by agent, task, and model
* Token usage per LLM call with full input/output visibility
* Compare costs across different LLM providers
* Identify expensive prompts and optimize them

### Debug Failures with Agent Thoughts

When an automation fails, you can:

* See exactly which step failed
* Read the agent's thinking at the failure point
* Check the browser state and available elements
* Analyze whether the failure was due to bad reasoning or bad information
* Fix the root cause with full context

### Performance Optimization

* Identify slow steps (LLM calls vs browser actions vs HTTP requests)
* Compare execution times across runs
* Optimize max\_steps and max\_actions\_per\_step
* Track HTTP request latency for page navigations

## Configuration

### Custom OpenTelemetry Endpoint Configuration

```python theme={null}
import openlit

# Configure custom OTLP endpoints
openlit.init(
	otlp_endpoint="http://localhost:4318",
	application_name="my-browser-automation",
	environment="production"
)
```

### Environment Variables

You can also configure OpenLIT via environment variables:

```bash theme={null}
export OTEL_EXPORTER_OTLP_ENDPOINT="http://localhost:4318"
export OTEL_SERVICE_NAME="browser-automation"
export OTEL_ENVIRONMENT="production"
```

### Self-Hosted OpenLIT

If you prefer to keep your data on-premises:

```bash theme={null}
# Using Docker
docker run -d \
  -p 4318:4318 \
  -p 3000:3000 \
  openlit/openlit:latest

# Access dashboard at http://localhost:3000
```

## Integration with Existing Tools

OpenLIT uses OpenTelemetry internally, so it integrates seamlessly with:

* **Jaeger** - Distributed tracing visualization
* **Prometheus** - Metrics collection and alerting
* **Grafana** - Custom dashboards and analytics
* **Datadog** - APM and log management
* **New Relic** - Full-stack observability
* **Elastic APM** - Application performance monitoring

Simply configure OpenLIT to export to your existing OTLP-compatible endpoint.