viasocket (Python)

Your own agent, acting in the apps each of your users connected through viaSocket: every action of an app is a tool, run on that user's own connection. Slack's Send Message, Google Sheets' Add New Row, HubSpot's Create Deal — any of 2,300+ apps, with no connector code and no OAuth on your side. Works with LangChain, CrewAI and LlamaIndex.

It is the Python side of the viasocket-apps npm package, and builds the same tools from the same catalog. No dependencies of its own; Python 3.10+.

pip install "viasocket[langchain]"     # or [crewai], [llamaindex]

You need three values: VIASOCKET_ORG_ID, VIASOCKET_PROJECT_ID and VIASOCKET_EMBED_SECRET. With Node.js, npx viasocket-apps setup writes them to .env after one click in the browser; without it, copy them from the viaSocket dashboard (Integrations → Create embed → Install Code). The secret stays on your server.

import os
from viasocket import ViaSocket

viasocket = ViaSocket(
    org_id=os.environ["VIASOCKET_ORG_ID"],
    project_id=os.environ["VIASOCKET_PROJECT_ID"],
    secret=os.environ["VIASOCKET_EMBED_SECRET"],
)

LangChain

from langchain.agents import create_agent
from viasocket.langchain import viasocket_tools

tools = viasocket_tools(
    viasocket,
    user="user_123",  # the unique identifier the user connected their apps under
    apps=["slack", "google-sheets"],
    actions={"slack": ["send-message"], "google-sheets": ["add-new-row-to-sheet", "lookup-spreadsheet-rows"]},
)

agent = create_agent("anthropic:claude-sonnet-5-5", tools)
agent.invoke({"messages": [{"role": "user", "content": "Post our Q3 numbers in #finance"}]})

CrewAI

from crewai import Agent
from viasocket.crewai import viasocket_tools

agent = Agent(
    role="Operations assistant",
    goal="Keep the team updated in Slack",
    backstory="You post updates where the team reads them.",
    tools=viasocket_tools(viasocket, user="user_123", apps=["slack"], actions={"slack": ["send-message"]}),
)

LlamaIndex

from llama_index.core.agent.workflow import FunctionAgent
from viasocket.llamaindex import viasocket_tools

agent = FunctionAgent(
    tools=viasocket_tools(viasocket, user="user_123", apps=["slack"], actions={"slack": ["send-message"]}),
    llm=llm,
)

How the tools behave

• The user connects the app first, in your product, through viaSocket's connect popup (see the viasocket-apps README). A tool for an app they have not connected answers the model "Slack is not connected for this user", so the agent can ask them to; it starts working on the next call after they do.
• Pick the actions. An app left out of actions gives every published action as a tool — fine for a small app, too many for a large one (Notion has 57). Actions are named by action_id or by their path on the app's page (send-message).
• Tool names are <app>_<action> (slack_send-message); the input schema is built from the action's form, so the model sees the same fields, choices and help text a person would.
• Fields that hold an id (a channel, a spreadsheet) come from the user's own account. Each app with such a field also gets a <app>_list-options tool, which lists the real values on the user's connection.
• An error from the app comes back to the model as text, not as an exception, so one bad call does not end the run.

The same tools without a framework — a name, a description, a JSON Schema and invoke — are viasocket.agent_tools(viasocket, user, apps, actions).

License

MIT