Blackgeorge: Python Agent Framework for LLM Tool-Calling and Multi-Agent Orchestration

A code-first Python framework for building AI agents, tool-calling workflows, and multi-agent systems with explicit APIs, structured outputs, safe tool execution, and pause/resume flows.

What you can build with this Python AI agent framework

• tool-calling AI agents with validated inputs
• multi-agent teams that coordinate work
• agentic workflows with parallel and sequential steps
• LLM services with durable run state, events, and resume

Core primitives for agent orchestration

• Desk: orchestrates runs, events, and persistence
• Worker: single-agent execution with tools and memory
• Workforce: multi-worker coordination and management modes
• Workflow: step-based flows with parallel execution

Feature highlights for tool-calling and multi-agent workflows

• tool execution with confirmation, user input, timeouts, retries, and cancellation
• structured output support with Pydantic models
• event streaming and run store persistence
• collaboration primitives: channel messaging and blackboard state
• memory stores including vector memory with configurable chunking
• LiteLLM adapter for OpenAI-compatible model providers
• MCP tool integration for external tool providers

Why Blackgeorge

If you want a LangChain alternative that stays close to the metal, Blackgeorge emphasizes small, explicit primitives and clear execution flow. Compared to CrewAI or AutoGen, it keeps orchestration and tool calling predictable while still supporting multi-agent systems, workflows, and OpenAI-compatible function calling through LiteLLM.

Use cases and examples

• coding agents that edit files with confirmation and audit trails
• research and summarization agents with structured outputs
• support triage and routing across multiple workers
• operational workflows that pause for approvals and resume safely

See examples/coding_agent for a full end-to-end example.

Install

uv add blackgeorge

For development setup, see docs/development.md.

Quick Start: build your first AI agent

from blackgeorge import Desk, Worker, Job

desk = Desk(model="openai/gpt-5-nano")
worker = Worker(name="Researcher")
job = Job(input="Summarize this topic", expected_output="A short summary")

report = desk.run(worker, job)
print(report.content)

Documentation

See docs/README.md for the full documentation set. Preview locally with uv run mkdocs serve.

Job input

Job.input is the payload sent to the worker as the user message. If it is not a string, it is serialized to JSON. Use a string for simple requests, or a structured dict when you want explicit fields.

job = Job(
    input={
        "task": "Fix calculator behavior and update tests.",
        "context": "Use tools to inspect the project files.",
        "requirements": [
            "Confirm divide-by-zero behavior with the user.",
            "Confirm empty-average behavior with the user.",
            "Apply changes using tools.",
        ],
    },
    expected_output="Updated project files with consistent behavior.",
)

Workforce

from blackgeorge import Desk, Worker, Workforce, Job

desk = Desk(model="openai/gpt-5-nano")
w1 = Worker(name="Researcher")
w2 = Worker(name="Writer")
workforce = Workforce([w1, w2], mode="managed")

job = Job(input="Create a market report")
report = desk.run(workforce, job)

Workflow

from blackgeorge import Desk, Worker, Job
from blackgeorge.workflow import Step, Parallel

desk = Desk(model="openai/gpt-5-nano")
analyst = Worker(name="Analyst")
writer = Worker(name="Writer")

flow = desk.flow([
    Step(analyst),
    Parallel(Step(writer), Step(analyst)),
])

job = Job(input="Analyze product feedback")
report = flow.run(job)

Streaming

report = desk.run(worker, job, stream=True)

Pause and resume

from blackgeorge import Desk, Worker, Job
from blackgeorge.tools import tool

@tool(requires_confirmation=True)
def risky_action(action: str) -> str:
    return f"ran:{action}"

desk = Desk(model="openai/gpt-5-nano")
worker = Worker(name="Ops", tools=[risky_action])
job = Job(input="run risky")

report = desk.run(worker, job)
if report.status == "paused":
    report = desk.resume(report, True)

Session: multi-turn conversations

from blackgeorge import Desk, Worker

desk = Desk(model="openai/gpt-5-nano")
worker = Worker(name="ChatBot")

session = desk.session(worker)

session.run("My name is Alice")
session.run("What's my name?")

session_id = session.session_id

later_session = desk.session(worker, session_id=session_id)
later_session.run("Where do I live?")