stewrd

Python SDK for the Stewrd Agent API.

Install

pip install stewrd

Quickstart

from stewrd import Stewrd

stewrd = Stewrd("sk-stw_your_key")

result = stewrd.agent.run(
    message="Research the top 5 CRM tools",
    capabilities=["research", "documents"],
)

print(result.message)
print(result.files[0].url)

Streaming

for event in stewrd.agent.stream(message="Write a detailed analysis"):
    if event.type == "token":
        print(event.content, end="")
    if event.type == "tool_start":
        print(f"Using {event.tool}...")
    if event.type == "done":
        print(f"\n\nTokens: {event.usage.tokens_used}")

You can also collect the full response after streaming:

stream = stewrd.agent.stream(message="Hello")
response = stream.final_response()
print(response.message)

Configuration

stewrd = Stewrd(
    "sk-stw_...",
    base_url="https://api.stewrd.dev",  # default
    timeout=120.0,                       # default, in seconds
)

API Reference

Stewrd(api_key, *, base_url, timeout)

Create a new client instance.

Param	Type	Description
api_key	str	Your Stewrd API key (sk-stw_...)
base_url	str	API base URL (default: https://api.stewrd.dev)
timeout	float	Request timeout in seconds (default: 120.0)

stewrd.agent.run(message, *, capabilities, files)

Run the agent synchronously. Returns AgentResponse.

Param	Type	Description
message	str	The instruction for the agent
capabilities	list[str]	Capabilities to enable (e.g. ["research", "documents"])
files	list[InputFile]	Files to include as context

stewrd.agent.stream(message, *, capabilities, files)

Run the agent with streaming. Returns AgentStream.

Takes the same params as run(). The returned AgentStream is an Iterator[StreamEvent].

Stream Events

Event	Fields	Description
token	content: str	A chunk of response text
tool_start	tool: str	A tool invocation started
tool_end	tool: str	A tool invocation finished
done	response, usage	Stream complete with full response
error	code: str, message: str	An error occurred

StewrdError

Thrown on non-2xx API responses.

from stewrd import Stewrd, StewrdError

try:
    stewrd.agent.run(message="...")
except StewrdError as e:
    print(e.status)   # 401
    print(e.code)     # 'invalid_api_key'
    print(e.message)  # 'Invalid API key'
    print(e.docs)     # 'https://docs.stewrd.dev/errors/invalid_api_key'

Requirements

• Python 3.9+
• httpx (installed automatically)

License

MIT