Hanzo Python SDK

The flagship Python SDK for the Open AI Cloud — models, agents, tools, memory, and MCP in one install.

This is the most complete Hanzo SDK — a uv workspace of 60+ composable packages covering the full AI surface: the typed cloud client, an agent framework, the Model Context Protocol server and tools, persistent memory + RAG, distributed compute, and a batteries-included CLI. If you build AI in Python, start here.

Install

pip install hanzoai        # the typed cloud API client
pip install hanzo          # orchestration helpers, agents, MCP
pip install "hanzo[all]"   # everything, including optional extras

The hanzo command is not a Python package — it is a native binary:

curl -fsSL https://hanzo.sh | sh
hanzo auth login

Quickstart

from hanzoai import ApiClient, Configuration, AiOpenAICompatibleApi
from hanzoai import AiChatCompletionRequest, AiChatMessage

config = Configuration(host="https://api.hanzo.ai", access_token="sk-...")

with ApiClient(config) as client:
    ai = AiOpenAICompatibleApi(client)
    resp = ai.ai_create_chat_completion(
        AiChatCompletionRequest(
            model="zen5-coder",
            messages=[AiChatMessage(role="user", content="Ship it.")],
        )
    )
    print(resp.choices[0].message.content)

Every route is https://api.hanzo.ai/v1/<service>/*. Models come from the Zen family (our own models) plus any provider you connect — one typed client, no proxy in the middle.

Examples — the six canonical flows

examples/ carries one directory per flow. These are the same six in every Hanzo SDK, so a reader who knows one language's set can navigate another's.

flow	what it does	routes
hello	identity — prove the key works	GET /v1/bot/auth/me
chat	one completion	POST /v1/chat/completions
money	balance + usage	GET /v1/billing/balance, GET /v1/billing/usage
store	KV round-trip	POST /v1/kv, GET/DELETE /v1/kv/{name}
agent	create + run + read	POST /v1/agents, POST /v1/agents/{ref}/run, GET /v1/agents/{ref}/runs
tools	tool catalog	GET /v1/tools

Each reads HANZO_API_KEY from the environment and talks to https://api.hanzo.ai unless HANZO_BASE_URL says otherwise:

export HANZO_API_KEY=hk-...
uv run python -m examples.hello

They import from hanzoai.cloud — the client generated from https://api.hanzo.ai/v1/openapi.json, which is where new work goes. examples/client.py is the single place a base URL or an env var is resolved. CI imports all six on every push, which is what keeps them from rotting into pseudocode.

Packages

The workspace splits cleanly by concern. The headline packages:

Package	Purpose
hanzoai	Typed cloud API client (generated from the Hanzo OpenAPI surface).
hanzo	Orchestration helpers and the older Python CLI (console script hanzo-py).
hanzo-mcp	Model Context Protocol server — discovers tools via entry points.
hanzo-agents / hanzo-agent	Agent framework — build and orchestrate agents and swarms.
hanzo-network	Distributed AI compute and node orchestration.
hanzo-memory	Persistent memory + RAG (SQLite, optional vector backends).
hanzo-tools-*	60+ single-concern tool packages (shell, browser, fs, code, vector, iam, …), each exposing a TOOLS list.

python-sdk/
└── pkg/
    ├── hanzoai/          # typed cloud client (OpenAPI-generated)
    ├── hanzo/            # orchestration helpers + legacy Python CLI
    ├── hanzo-mcp/        # MCP server (entry-point tool discovery)
    ├── hanzo-agents/     # agent framework
    ├── hanzo-network/    # distributed compute
    ├── hanzo-memory/     # memory + RAG
    └── hanzo-tools-*/    # composable tool packages

CLI

The Hanzo CLI is a native binary, not a Python package:

curl -fsSL https://hanzo.sh | sh
hanzo auth login
hanzo models list
hanzo "fix the failing test"

It carries one command group per Hanzo Cloud product, generated from the same contract this SDK is generated from. hanzo --help prints the tree.

pip install hanzo still ships the older Python CLI as hanzo-py. It is named that way on purpose: two programs called hanzo on one PATH is how hanzo login came to mean different things to different people.

Model Context Protocol (hanzo-mcp)

hanzo-mcp hosts the MCP server and discovers tools through [project.entry-points."hanzo.tools"], so any installed hanzo-tools-* package lights up automatically.

from hanzo_mcp import create_mcp_server

server = create_mcp_server()
server.register_tool(my_tool)
server.start()

Agents (hanzo-agents)

from hanzo_agents import Agent, Swarm

agent = Agent(
    name="researcher",
    model="zen5-coder",
    instructions="You are a research assistant.",
)

swarm = Swarm([agent])
result = await swarm.run("Research quantum computing.")

Network (hanzo-network)

from hanzo_network import LocalComputeNode, DistributedNetwork

node = LocalComputeNode(node_id="node-001")
network = DistributedNetwork()
network.register_node(node)

Memory (hanzo-memory)

Persistent memory and RAG backed by SQLite, with optional vector search (sqlite-vec, lancedb, kuzu). Global state lives in ~/.hanzo/; per-project state in .hanzo/.

from hanzo_memory import MemoryService

memory = MemoryService()
await memory.store("key", "value")
result = await memory.retrieve("key")

Development

This is a uv workspace.

git clone https://github.com/hanzoai/python-sdk.git
cd python-sdk
uv sync --all-packages       # install the whole workspace

uv run pytest tests/ -v      # run tests
make lint                    # ruff lint
make format                  # ruff format
make type-check              # mypy / pyright

Per-package work:

uv run pytest pkg/hanzo-mcp -v
cd pkg/hanzo && uv build

Configuration

HANZO_API_KEY=your-api-key
HANZO_BASE_URL=https://api.hanzo.ai
HANZO_LOG_LEVEL=INFO

Or ~/.hanzo/config.yaml:

api:
  key: your-api-key
  base_url: https://api.hanzo.ai
logging:
  level: INFO

Security

• Transport is TLS 1.3+. Secrets belong in a KMS, never in source or plaintext.
• SOC 2 audit in progress; HIPAA BAA available.

Report vulnerabilities to security@hanzo.ai. See SECURITY.md.

Contributing

Contributions welcome — see CONTRIBUTING.md. Use type hints, add tests for new behavior, and run make lint before opening a PR.

License

Apache License 2.0 — see LICENSE.

Support

• Docs: docs.hanzo.ai
• Issues: github.com/hanzoai/python-sdk/issues
• Email: support@hanzo.ai

Hanzo — the Open AI Cloud

Open source · every language · on-chain settlement. hanzo.ai · docs.hanzo.ai

SDKs in every language — Python (flagship) · TypeScript · Go · Rust · C++ · Swift · Kotlin · umbrella