* feat: s01-s14 docs quality overhaul — tool pipeline, single-agent, knowledge & resilience Rewrite code.py and README (zh/en/ja) for s01-s14, each chapter building incrementally on the previous. Key fixes across chapters: - s01-s04: agent loop, tool dispatch, permission pipeline, hooks - s05-s08: todo write, subagent, skill loading, context compact - s09-s11: memory system, system prompt assembly, error recovery - s12-s14: task graph, background tasks, cron scheduler All chapters CC source-verified. Code inherits fixes forward (PROMPT_SECTIONS, json.dumps cache, real-state context, can_start dep protection, etc.). * feat: s15-s19 docs quality overhaul — multi-agent platform: teams, protocols, autonomy, worktree, MCP tools Rewrite code.py and README (zh/en/ja) for s15-s19, the multi-agent platform chapters. Each chapter inherits all previous fixes and adds one mechanism: - s15: agent teams (TeamCreate, teammate threads, shared task list) - s16: team protocols (plan approval, shutdown handshake, consume_inbox) - s17: autonomous agents (idle polling, auto-claim, consume_lead_inbox) - s18: worktree isolation (git worktree, bind_task, cwd switching, safety) - s19: MCP tools (MCPClient, normalize_mcp_name, assemble_tool_pool, no cache) All appendix source code references verified against CC source. Config priority corrected: claude.ai < plugin < user < project < local. * fix: 5 regressions across s05-s19 — glob safety, todo validation, memory extraction, protocol types, dep crash - s05-s09: glob results now filter with is_relative_to(WORKDIR) (inherited from s02) - s06-s08: todo_write validates content/status required fields (inherited from s05) - s09: extract_memories uses pre-compression snapshot instead of compacted messages - s16: submit_plan docstring clarifies protocol-only (not code-level gate) - s17-s19: match_response restores type mismatch validation (from s16) - s17-s19: claim_task deps list handles missing dep files without crashing * fix: s12 Todo V2 logic reversal, s14/s15 cron range validation, s18/s19 worktree name validation - s12 README (zh/en/ja): fix Todo V2 direction — interactive defaults to Task, non-interactive/SDK defaults to TodoWrite. Fix env var name to CLAUDE_CODE_ENABLE_TASKS (not TODO_V2). - s14/s15: add _validate_cron_field with per-field range checks (minute 0-59, hour 0-23, dom 1-31, month 1-12, dow 0-6), step > 0, range lo <= hi. Replace old try/except validation that only caught exceptions. - s18/s19: add validate_worktree_name() to remove_worktree and keep_worktree, not just create_worktree. * fix: align s16-s19 teaching tool consistency * fix pr265 chapter diagrams * Add comprehensive s20 harness chapter * Fix chapter smoke test regressions * Clarify README tutorial track transition --------- Co-authored-by: Haoran <bill-billion@outlook.com>
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s16: Team Protocols — 队友之间要有约定
s01 → ... → s14 → s15 → s16 → s17 → s18 → s19 → s20
"队友之间要有约定" — request-response 模式驱动协商。
Harness 层: 协议 — Agent 之间的结构化握手。
问题
s15 的队友能干活了,但协调是松散的:Lead 发消息,队友回复,没有结构化的协议。两个场景暴露了问题:
关机:Lead 想让 Alice 关机。直接杀线程,Alice 写了一半的文件留在磁盘上。需要握手:Lead 发请求,Alice 确认收尾后关机。
计划审批:Bob 想重构认证模块,属于高风险操作。应该先让 Lead 看 Bob 的计划,审批通过后再动手。
这两个场景结构完全一样:一方发请求,另一方给回复,请求和回复通过同一个 ID 关联。有状态机追踪:pending → approved / rejected。
解决方案
教学代码承接前面章节的 Agent 能力脉络,在 S15 团队通信基础上加入结构化协议。为了聚焦协议机制,省略了完整错误恢复、记忆和技能系统。新增三样:ProtocolState(请求状态追踪)、dispatch_message(按消息类型路由到处理器)、match_response(通过 request_id 关联回复与请求,含类型校验)。
两种协议,一套机制:
| 协议 | 方向 | 用途 |
|---|---|---|
| shutdown_request / response | Lead → 队友 | 体面关机握手 |
| plan_approval_request / response | 队友 → Lead | 计划审批协议示例 |
教学版演示了计划审批的请求-响应消息流程,没有实现执行门控(未 approved 时拦截 bash/write_file)。真实 CC 的队友有 permission gating 机制。
工作原理
ProtocolState: 请求状态
每个协议请求创建一条状态记录,记录谁发的、发给谁、当前状态、附带内容:
@dataclass
class ProtocolState:
request_id: str # 唯一 ID,如 "req_004281"
type: str # "shutdown" | "plan_approval"
sender: str # 发起方
target: str # 接收方
status: str # pending | approved | rejected
payload: str # 计划文本或关机原因
created_at: float # 时间戳
pending_requests: dict[str, ProtocolState] = {}
发请求时创建记录,收回复时通过 request_id 找到对应记录,更新状态。
四步协议流程
以关机为例,完整链路:
① Lead 发请求
req_id = new_request_id() # "req_004281"
pending_requests[req_id] = ProtocolState(type="shutdown", status="pending", ...)
BUS.send("lead", "alice", "shutdown_request", metadata={"request_id": req_id})
② 队友收到 → dispatch
inbox = BUS.read_inbox("alice")
msg_type = msg["type"] # "shutdown_request"
→ 路由到 handle_shutdown_request()
③ 队友回复
BUS.send("alice", "lead", "shutdown_response",
metadata={"request_id": req_id, "approve": True})
④ Lead 收响应 → match
match_response("shutdown_response", req_id, approve=True)
pending_requests[req_id].status = "approved"
request_id 是贯穿全链路的关联键,请求带着它出去,回复带着它回来。
教学版用
shutdown_response统一命名(approve 字段区分同意/拒绝)。真实源码拆成shutdown_approved和shutdown_rejected两种独立消息类型(teammateMailbox.ts:720-763)。
dispatch_message: 按类型路由
队友的 inbox 不只收普通消息,还收协议消息。handle_inbox_message 按消息类型分发:
def handle_inbox_message(name, msg, messages):
msg_type = msg.get("type", "message")
req_id = msg.get("metadata", {}).get("request_id", "")
if msg_type == "shutdown_request":
BUS.send(name, "lead", "Shutting down.", "shutdown_response",
{"request_id": req_id, "approve": True})
return True # 停止循环
if msg_type == "plan_approval_response":
approve = msg["metadata"].get("approve", False)
messages.append({"role": "user",
"content": "[Plan approved]" if approve else "[Plan rejected]"})
return False # 继续循环
新增协议类型只需加新的 if 分支。
match_response: 类型校验
match_response 不只按 request_id 找状态,还会校验响应类型是否匹配请求类型:
def match_response(response_type, request_id, approve):
state = pending_requests.get(request_id)
if not state:
return
if state.type == "shutdown" and response_type != "shutdown_response":
return # type mismatch, skip
if state.type == "plan_approval" and response_type != "plan_approval_response":
return
if state.status != "pending":
return # already resolved, skip duplicate
state.status = "approved" if approve else "rejected"
一个 shutdown_response 不会意外 approve 一个 plan_approval 请求。
统一 inbox 消费:consume_lead_inbox
check_inbox 工具和主循环末尾都调用同一个 consume_lead_inbox() 函数,先路由协议消息再返回剩余内容,避免消息被读走但协议状态没更新:
def consume_lead_inbox(route_protocol=True) -> list[dict]:
msgs = BUS.read_inbox("lead")
if route_protocol:
for msg in msgs:
meta = msg.get("metadata", {})
req_id = meta.get("request_id", "")
msg_type = msg.get("type", "")
if req_id and msg_type.endswith("_response"):
match_response(msg_type, req_id, meta.get("approve", False))
return msgs
主循环末尾还会把 inbox 消息注入到 history,让 LLM 能看到并做出反应。
队友 idle loop:等待而不是退出
s15 的队友跑完 10 轮就退出。s16 的队友在 LLM 返回非 tool_use 后进入 idle 等待:轮询 inbox,收到 shutdown_request 就响应退出,收到新消息就继续工作。
LLM 返回非 tool_use
→ idle: 每秒轮询 inbox
→ 收到 shutdown_request → 回复 shutdown_response → 退出
→ 收到新消息 → 注入 messages → 继续 LLM turn
教学版省略了 idle_notification 给 Lead 的通知。真实 CC 在 idle 时发 idle_notification,Lead 收到后知道队友空闲,可以分配新任务。
合起来跑
1. Lead: "让 Alice 创建一个文件,然后关机"
2. Lead → spawn_teammate("alice", "backend", "创建 config.py")
3. alice 线程启动 → write_file("config.py", "...") → 完成 → idle
4. Lead → request_shutdown("alice")
→ BUS.send("shutdown_request", {request_id: "req_000142"})
5. alice idle 轮询收到 → handle_shutdown_request
→ BUS.send("shutdown_response", {request_id: "req_000142", approve: True})
6. Lead consume_lead_inbox → match_response("req_000142", approve=True)
→ pending_requests["req_000142"].status = "approved"
→ inbox 消息注入 history,LLM 看到关机结果
关机握手完整:请求 → 确认 → 关机。每一步有 request_id 追溯。
相对 s15 的变更
| 组件 | 之前 (s15) | 之后 (s16) |
|---|---|---|
| 协调方式 | 松散文本消息 | 结构化请求-响应协议 |
| 请求追踪 | 无 | ProtocolState + pending_requests dict |
| 消息路由 | 全部当文本处理 | dispatch_message 按类型分发 |
| 关机 | 自然退出或杀线程 | request_id 握手机制 |
| 计划审批 | 无 | 消息流程示例(未实现执行门控) |
| 新消息类型 | message, result | + shutdown_request/response, plan_approval_request/response |
| 队友生命周期 | 最多 10 轮 | idle loop(等待 inbox 消息) |
| Lead inbox | check_inbox 和主循环分别读 | 统一 consume_lead_inbox |
| Lead 工具 | 14 (s15) | 14(核心工具集加入 request_shutdown, request_plan, review_plan) |
| 队友工具 | 4 (s15) | + submit_plan (5) |
试一下
cd learn-claude-code
python s16_team_protocols/code.py
试试这些 prompt:
Spawn alice as a backend dev. Ask her to create a file. Then request her shutdown.Spawn bob with a refactoring task. Have him submit a plan first. Then review and approve it.
观察重点:关机握手是否完整(请求 → 确认 → 关机)?pending_requests 的状态是否正确转换?request_id 是否在请求和响应之间保持一致?队友 idle 后是否能收到 shutdown_request?
接下来
s15-s16 中,Lead 必须给每个队友分配任务。"Alice 做这个,Bob 做那个"。任务看板上有 10 个未认领的任务,Lead 得手动 assign。
能不能让队友自己看板、自己认领?Lead 只需要创建任务,队友自己发现、自己认领、自己完成。
s17 Autonomous Agents → 队友自组织,不需要领导分配。
深入 CC 源码
CC 的团队协议实现(teammateMailbox.ts,1184 行)和教学版在核心结构上一致:request_id + approve/reject 的请求-响应模式。差异在于:
关机协议:CC 的 shutdown 是三向通信(teammateMailbox.ts:720-763、SendMessageTool.ts:268-430)。Lead 发 shutdown_request,队友回复 shutdown_approved(或 shutdown_rejected 附原因),系统发送 teammate_terminated 通知所有相关方。关机确认后系统自动清理 pane(tmux/iTerm2)、unassign 任务、从 team config 移除成员(useInboxPoller.ts:677-800)。教学版用 shutdown_response 统一命名,真实源码拆成 approved/rejected 两种独立消息。
计划审批:真实源码里 plan approval request 由 ExitPlanModeV2Tool.ts:263-312 在 plan-mode-required 队友退出 plan mode 时产生。useInboxPoller.ts:599-661 当前会自动回写 approval,并把请求交给 Lead 作为上下文(regular message)。SendMessageTool.ts:434-518 仍保留显式 approve/reject response 能力,审批时可同时设置 permissionMode(如"批准但以 plan mode 运行"),响应中可包含 feedback 字符串供队友修正后重新提交。不是简单的"Lead 手动 review_plan 工具"流程。
消息格式:CC 的协议消息是结构化的 JSON(有 Zod schema 验证),教学版用简单的 type + metadata 字典。字段名也不统一:permission 用 request_id(teammateMailbox.ts:453-462),shutdown 和 plan approval 用 requestId(teammateMailbox.ts:684-763)。
执行门控:CC 的队友有完整的 permission gating。未获批准的高风险操作会被拦截,不是可选的。教学版只演示了消息流程,没有实现执行拦截。
通用性:教学版的一个 FSM(pending → approved | rejected)对应两种协议,这个简化完全正确。CC 的所有协议消息共用同一个 request id 关联机制。