python

langchain-ceki

LangChain toolkit for Ceki — drive a real Chrome session from your LangChain agent. Structural tools that wrap ceki-sdk.

Install

pip install langchain-ceki

Use

import os
os.environ["CEKI_API_KEY"] = "your_key_here"  # or export it

from langchain_ceki import CekiToolkit
from langchain.agents import AgentExecutor, create_tool_calling_agent

toolkit = CekiToolkit(default_rent={"schedule_id": 4242, "mode": "main"})
tools = toolkit.get_tools()

agent = create_tool_calling_agent(llm, tools, prompt)
executor = AgentExecutor(agent=agent, tools=tools)

try:
    result = await executor.ainvoke({
        "input": (
            "Open https://my-app.example.com, log in with the saved profile, "
            "and return the dashboard's headline number."
        ),
    })
    print(result["output"])
finally:
    await toolkit.aclose()  # ALWAYS — leaving sessions open burns credit

Tools

Tool	What it does
ceki_rent_browser	Rent a real Chrome session and return its session_id. Pass it to every other tool.
ceki_navigate	Open a URL.
ceki_click	Click at viewport coordinates. Mouse jitter ON by default; human=False to teleport.
ceki_type	Type text into the focused element. Cadence + jitter ON by default.
ceki_scroll	Scroll by delta_y pixels with easing.
ceki_screenshot	PNG of the current viewport as base64.
ceki_snapshot	Screenshot + drained chat messages from the provider.
ceki_chat_send	Send a chat message to the human provider (e.g. ask for a captcha code).
ceki_stop	End the session. Always call when done.

Both sync (tool._run / tool.invoke) and async (tool._arun / tool.ainvoke) paths are supported. The sync path is safe to call from a synchronous LangChain runnable; calling it from inside an already-running event loop raises with a clear hint to switch to ainvoke.

Get an API key at ceki.me.

Use responsibly

Use only on sites you own or have authorization to operate on.

License

MIT.