conduit-agent-sdk

General-purpose Python SDK for the Agent Client Protocol (ACP). Works with any ACP-compatible coding agent — Claude Code, Gemini CLI, OpenCode, Codex, Goose, and more.

Architecture

┌─────────────────────────────────────────┐
│          Python (conduit_sdk)           │  ← Developer-facing API
│  Client, Session, @tool, hooks, proxy   │
├─────────────────────────────────────────┤
│       Rust (_conduit_sdk via PyO3)      │  ← Performance-critical core
│  ACP client, transport, serialization   │
├─────────────────────────────────────────┤
│          sacp / sacp-tokio              │  ← ACP protocol implementation
│  JrHandlerChain, ByteStreams, types     │
└─────────────────────────────────────────┘

Installation

Requires Python 3.12+ and Rust toolchain.

# Clone and install in development mode
git clone <repo-url>
cd conduit-agent-sdk
uv sync
maturin develop --uv

Quick Start

One-liner with query()

import asyncio
from conduit_sdk import query

async def main():
    async for message in query(prompt="Hello!", agent="claude-acp"):
        print(message.text())

asyncio.run(main())

Registry-based client

from conduit_sdk import Client

async with await Client.from_registry("claude-acp") as client:
    async for message in client.prompt("Hello!"):
        print(message.text())

Manual command (no registry)

from conduit_sdk import Client

async with Client(["claude", "--agent"]) as client:
    async for message in client.prompt("Hello!"):
        print(message.text())

Agent Registry

The SDK integrates with the ACP agent registry, which provides a catalog of available agents with distribution metadata.

from conduit_sdk import Registry

registry = Registry()
await registry.fetch()

# List all agents
agents = await registry.list_agents()

# Search by keyword
results = registry.search("claude")

# Resolve to a shell command
cmd, env = await registry.resolve_command("claude-acp")
# cmd = ["npx", "@zed-industries/claude-agent-acp@0.18.0"]

Resolution automatically detects your platform and preferred runtime (npx → uvx → binary).

Features

Custom Tools

from conduit_sdk import tool

@tool(description="Read a file from disk")
async def read_file(path: str) -> str:
    return open(path).read()

Lifecycle Hooks

from conduit_sdk import HookType

@client.hooks.on(HookType.PreToolUse)
async def log_tool(ctx):
    print(f"Tool called: {ctx.get('tool_name')}")
    return ctx

Proxy Chains

from conduit_sdk import ProxyChain, ContextInjector

chain = ProxyChain()
chain.add(ContextInjector(context="Be concise."))
await chain.build()

Sessions

session = await client.new_session()
await session.set_mode("code")
response = await session.prompt("Fix the bug in main.py")

Examples

Run any example with uv run:

uv run examples/01_hello_world.py

API Overview

Development

# Install dev dependencies
uv sync --extra dev

# Build Rust extension
maturin develop --uv

# Run tests
uv run pytest tests/ -v

# Lint
uv run ruff check python/ tests/

Status

This SDK is in early development. The current implementation provides:

• Complete project scaffold with Rust/Python hybrid architecture
• ACP agent registry integration with automatic command resolution
• Stub implementations for all ACP operations (connect, prompt, session, tools, hooks, proxy)
• Full type coverage with PEP 561 type stubs
• 12 runnable examples demonstrating the full SDK surface
• Test suite covering Python-layer logic

The Rust core has TODO markers where sacp crate integration needs to be wired up for actual ACP protocol communication.

License

MIT