6964686808
Voice code assistant that dispatches questions to a Claude Agent
SDK worker. The main task runs the voice pipeline (STT + LLM + TTS)
and an `ask_code` direct function. `CodeWorker` is a bus-only
`BaseTask` spawned on the runner: it accepts `@job`-style
requests through the bus, queues them onto an asyncio queue, and
runs them sequentially through a persistent Claude SDK session so
follow-ups share context. The example shows the job-RPC surface
(`task.job("code_worker", ...)`), bus-only tasks (no pipeline),
and the `pipeline_task` field on `FunctionCallParams`.
121 lines
4.7 KiB
Python
121 lines
4.7 KiB
Python
#
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# Copyright (c) 2026, Daily
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#
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# SPDX-License-Identifier: BSD 2-Clause License
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#
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"""Code worker that explores a codebase using Claude Agent SDK."""
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import asyncio
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from loguru import logger
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from pipecat.bus import (
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BusCancelTaskMessage,
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BusEndTaskMessage,
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BusJobRequestMessage,
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)
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from pipecat.pipeline.base_task import BaseTask
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from pipecat.pipeline.job_context import JobStatus
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try:
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from claude_agent_sdk import ClaudeAgentOptions, ClaudeSDKClient
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except ModuleNotFoundError as e:
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logger.error(f"Exception: {e}")
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logger.error("In order to use CodeWorker, you need to `pip install claude-agent-sdk`.")
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raise Exception(f"Missing module: {e}")
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class CodeWorker(BaseTask):
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"""Bus-only task that answers code questions using Claude Agent SDK.
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Maintains a persistent Claude SDK session so follow-up questions
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share context. Questions are queued and processed sequentially. The
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worker has no Pipecat pipeline — it consumes job requests from the
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bus and replies with job responses.
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"""
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def __init__(self, name: str, *, project_path: str):
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"""Initialize the CodeWorker.
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Args:
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name: Unique task name.
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project_path: Filesystem path the Claude SDK should explore.
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"""
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super().__init__(name)
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self._project_path = project_path
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self._queue: asyncio.Queue = asyncio.Queue()
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self._worker_task: asyncio.Task | None = None
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self._claude_options = ClaudeAgentOptions(
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permission_mode="bypassPermissions",
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system_prompt=(
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f"You are a code assistant. The project is at: {self._project_path}\n\n"
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"Answer the user's question by exploring the codebase. Use Read to "
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"view files, Glob to find files by pattern, and Bash to run commands "
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"like grep or find. Be thorough but concise in your answer. "
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"Focus on what the user asked. Respond with a clear, spoken-friendly "
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"summary (no markdown, no bullet points, no code blocks)."
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),
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allowed_tools=["Read", "Bash", "Glob", "Grep"],
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model="sonnet",
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max_turns=10,
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)
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async def start(self) -> None:
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"""Launch the Claude SDK worker loop alongside the standard task start."""
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await super().start()
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self._worker_task = self.create_task(self._worker_loop(), f"{self.name}::worker")
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async def stop(self) -> None:
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"""Cancel the worker loop before tearing down the task."""
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if self._worker_task:
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await self.cancel_task(self._worker_task)
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self._worker_task = None
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await super().stop()
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async def on_job_request(self, message: BusJobRequestMessage) -> None:
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"""Enqueue an incoming job for the worker loop."""
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await super().on_job_request(message)
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logger.info(f"Worker '{self.name}': queued '{message.payload['question']}'")
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self._queue.put_nowait(message)
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async def _handle_task_end(self, message: BusEndTaskMessage) -> None:
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"""Signal the run loop to finish on a graceful end."""
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await super()._handle_task_end(message)
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self._finished_event.set()
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async def _handle_task_cancel(self, message: BusCancelTaskMessage) -> None:
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"""Signal the run loop to finish on cancellation."""
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await super()._handle_task_cancel(message)
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self._finished_event.set()
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async def _worker_loop(self):
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try:
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async with ClaudeSDKClient(options=self._claude_options) as client:
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while True:
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message = await self._queue.get()
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question = message.payload["question"]
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logger.info(f"Worker '{self.name}': researching '{question}'")
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try:
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answer = ""
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await client.query(prompt=question)
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async for msg in client.receive_response():
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if type(msg).__name__ == "AssistantMessage":
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for block in msg.content:
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if type(block).__name__ == "TextBlock":
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answer += block.text
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logger.info(f"Worker '{self.name}': completed ({len(answer)} chars)")
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await self.send_job_response(message.job_id, {"answer": answer})
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except Exception as e:
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logger.error(f"Worker '{self.name}': error: {e}")
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await self.send_job_response(
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message.job_id, {"error": str(e)}, status=JobStatus.ERROR
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)
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except Exception as e:
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logger.error(f"Worker '{self.name}': failed to start Claude SDK: {e}")
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