astropods-adapter-langchain

LangChain adapter for the Astropods messaging service. Wraps a create_agent executor and connects it to the Astro runtime.

Installation

pip install astropods-adapter-langchain

Requires Python 3.10+.

Usage

from langchain_anthropic import ChatAnthropic
from langchain.agents import create_agent
from astropods_adapter_langchain import LangChainAdapter, serve

llm = ChatAnthropic(model="claude-sonnet-4-5")
system_prompt = "You are a helpful assistant."
agent = create_agent(llm, tools=[], system_prompt=system_prompt)

adapter = LangChainAdapter(agent, name="My Agent", system_prompt=system_prompt)
serve(adapter)

serve() blocks until SIGINT or SIGTERM. Under ast dev, GRPC_SERVER_ADDR is injected automatically.

API

`LangChainAdapter(executor, name, system_prompt?, tools?)`

Parameter	Type	Description
`executor`	LangChain agent	A compiled agent, e.g. from `create_agent`
`name`	`str`	Display name shown in logs and the playground
`system_prompt`	`str`	Shown in the playground's config panel
`tools`	`list`	LangChain tool objects — populates the playground tool list

`serve(adapter, options?)`

Re-exported from astropods-adapter-core. Connects the adapter to the messaging service and blocks until shutdown. Pass a ServeOptions(server_address="...") as the second argument to override the gRPC address.

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