agentmb 0.4.0

Python SDK for agentmb — local Chromium runtime daemon for AI agents

agentmb Python SDK

Python client for the agentmb daemon — local Chromium runtime for AI agents.

Install

pip install agentmb

Or from source (editable):

pip install -e sdk/python

Quick start

from agentmb import BrowserClient

with BrowserClient() as client:
    with client.sessions.create(profile="myprofile") as sess:
        sess.navigate("https://example.com")
        shot = sess.screenshot()
        shot.save("/tmp/out.png")

Async:

import asyncio
from agentmb import AsyncBrowserClient

async def main():
    async with AsyncBrowserClient() as client:
        sess = await client.sessions.create(profile="demo")
        async with sess:
            await sess.navigate("https://example.com")
            result = await sess.eval("document.title")
            print(result.result)

asyncio.run(main())

Action methods

Method	Description
sess.navigate(url)	Navigate to URL
sess.screenshot()	Capture screenshot → ScreenshotResult
sess.eval(expr)	Run JS → EvalResult
sess.extract(selector)	Extract text/attrs → ExtractResult
sess.click(selector)	Click element
sess.fill(selector, value)	Fill form field
sess.type(selector, text)	Type char-by-char
sess.press(selector, key)	Press key / combo (e.g. "Enter", "Control+a")
sess.select(selector, values)	Select <option> in a <select>
sess.hover(selector)	Hover over element
sess.wait_for_selector(selector, state)	Wait for element visibility state
sess.wait_for_url(pattern)	Wait for URL to match glob pattern
sess.wait_for_response(url_pattern, trigger)	Wait for a network response
sess.upload(selector, file_path)	Upload file to <input type="file">
sess.download(selector)	Click download link → DownloadResult
sess.handoff_start()	Switch to headed mode for human login
sess.handoff_complete()	Return to headless after login
sess.cdp_send(method, params)	Send raw CDP command
sess.logs(tail)	Fetch audit log entries

File upload / download

# Upload
result = sess.upload("#file-input", "/path/to/file.csv", mime_type="text/csv")
print(result.filename, result.size_bytes)

# Download: triggers click, returns base64 file content
dl = sess.download("#download-link")
dl.save("/tmp/report.pdf")

Wait actions

# Wait for element to appear
sess.wait_for_selector("#modal", state="visible", timeout_ms=3000)

# Wait for URL after SPA navigation
sess.wait_for_url("**/dashboard**", timeout_ms=5000)

# Wait for a specific network response (with navigate trigger)
resp = sess.wait_for_response(
    url_pattern="/api/data",
    timeout_ms=10000,
    trigger={"type": "navigate", "url": "https://app.example.com"},
)
print(resp.status_code)

Requirements

• Python 3.9+
• agentmb daemon running (agentmb start)

Environment variables

Variable	Default	Description
AGENTMB_PORT	19315	Daemon port
AGENTMB_API_TOKEN	(none)	API token if daemon started with one

License

MIT