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deep-agents-memory

deep-agents-memory

github.com/langchain-aiAgent 工作流11955 次安装10 周前更新
代码仓库

关于 deep-agents-memory

deep-agents-memory 说明 Deep Agents 的文件操作与记忆后端配置,适用于需要临时文件、跨会话持久化或本地磁盘访问的 Agent 开发者。可组合不同后端,并按路径将文件路由到不同存储。

主要功能

  1. 01线程内临时文件存储
  2. 02跨线程持久化存储
  3. 03按路径组合后端
  4. 04文件读写与搜索工具
  5. 05本地磁盘访问及操作审批

适用场景

  1. 01在单个线程中保存临时工作文件
  2. 02让不同线程共享持久记忆
  3. 03组合临时与长期文件存储
  4. 04本地开发时限制并审批文件操作

安装

复制下面的命令,在终端中运行。

$npx skills add https://github.com/langchain-ai/skills-benchmarks --skill deep-agents-memory

安装后在 Claude Code 中输入/deep-agents-memory确认已加载。

详细介绍

Deep Agents 使用可插拔后端执行文件操作和管理记忆:

短期(StateBackend):在单个线程内持久化,线程结束后即丢失 长期(StoreBackend):跨线程和会话持久化 混合(CompositeBackend):将不同路径路由到不同后端

FilesystemMiddleware 提供以下工具:ls、read_file、write_file、edit_file、glob、grep

Use CaseBackendWhy
临时工作文件StateBackend默认设置,无需配置
本地开发命令行FilesystemBackend直接访问磁盘
跨会话记忆StoreBackend跨线程持久化
混合存储CompositeBackend混合临时存储与持久存储
默认的 StateBackend 会在线程内临时存储文件。 ```python from deepagents import create_deep_agent

agent = create_deep_agent() # Default: StateBackend result = agent.invoke({ "messages": [{"role": "user", "content": "Write notes to /draft.txt"}] }, config={"configurable": {"thread_id": "thread-1"}})

/draft.txt is lost when thread ends

</python>
<typescript>
默认的 StateBackend 会在线程内临时存储文件。
```typescript
import { createDeepAgent } from "deepagents";

const agent = await createDeepAgent();  // Default: StateBackend
const result = await agent.invoke({
  messages: [{ role: "user", content: "Write notes to /draft.txt" }]
}, { configurable: { thread_id: "thread-1" } });
// /draft.txt is lost when thread ends
配置 CompositeBackend,将不同路径路由到不同的存储后端。 ```python from deepagents import create_deep_agent from deepagents.backends import CompositeBackend, StateBackend, StoreBackend from langgraph.store.memory import InMemoryStore

store = InMemoryStore()

composite_backend = lambda rt: CompositeBackend( default=StateBackend(rt), routes={"/memories/": StoreBackend(rt)} )

agent = create_deep_agent(backend=composite_backend, store=store)

/draft.txt -> ephemeral (StateBackend)

/memories/user-prefs.txt -> persistent (StoreBackend)

</python>
<typescript>
配置 CompositeBackend,将不同路径路由到不同的存储后端。
```typescript
import { createDeepAgent, CompositeBackend, StateBackend, StoreBackend } from "deepagents";
import { InMemoryStore } from "@langchain/langgraph";

const store = new InMemoryStore();

const agent = await createDeepAgent({
  backend: (config) => new CompositeBackend(
    new StateBackend(config),
    { "/memories/": new StoreBackend(config) }
  ),
  store
});

// /draft.txt -> ephemeral (StateBackend)
// /memories/user-prefs.txt -> persistent (StoreBackend)
通过 StoreBackend 路由,/memories/ 中的文件可跨线程持久化。 ```python # Using CompositeBackend from previous example config1 = {"configurable": {"thread_id": "thread-1"}} agent.invoke({"messages": [{"role": "user", "content": "Save to /memories/style.txt"}]}, config=config1)

config2 = {"configurable": {"thread_id": "thread-2"}} agent.invoke({"messages": [{"role": "user", "content": "Read /memories/style.txt"}]}, config=config2)

Thread 2 can read file saved by Thread 1

</python>
<typescript>
通过 StoreBackend 路由,/memories/ 中的文件可跨线程持久化。
```typescript
// Using CompositeBackend from previous example
const config1 = { configurable: { thread_id: "thread-1" } };
await agent.invoke({ messages: [{ role: "user", content: "Save to /memories/style.txt" }] }, config1);

const config2 = { configurable: { thread_id: "thread-2" } };
await agent.invoke({ messages: [{ role: "user", content: "Read /memories/style.txt" }] }, config2);
// Thread 2 can read file saved by Thread 1
在本地开发中使用 FilesystemBackend,可直接访问真实磁盘并支持人工参与流程。 ```python from deepagents import create_deep_agent from deepagents.backends import FilesystemBackend from langgraph.checkpoint.memory import MemorySaver

agent = create_deep_agent( backend=FilesystemBackend(root_dir=".", virtual_mode=True), # Restrict access interrupt_on={"write_file": True, "edit_file": True}, checkpointer=MemorySaver() )

Agent can read/write actual files on disk

</python>
<typescript>
在本地开发中使用 FilesystemBackend,可直接访问真实磁盘并支持人工参与流程。
```typescript
import { createDeepAgent, FilesystemBackend } from "deepagents";
import { MemorySaver } from "@langchain/langgraph";

const agent = await createDeepAgent({
  backend: new FilesystemBackend({ rootDir: ".", virtualMode: true }),
  interruptOn: { write_file: true, edit_file: true },
  checkpointer: new MemorySaver()
});

安全提示:切勿在 Web 服务器中使用 FilesystemBackend——请改用 StateBackend 或沙箱。

在自定义工具中直接访问 store,以执行长期记忆操作。 ```python from langchain.tools import tool, ToolRuntime from langchain.agents import create_agent from langgraph.store.memory import InMemoryStore

@tool def get_user_preference(key: str, runtime: ToolRuntime) -> str: """Get a user preference from long-term storage.""" store = runtime.store result = store.get(("user_prefs",), key) return str(result.value) if result else "Not found"

@tool def save_user_preference(key: str, value: str, runtime: ToolRuntime) -> str: """Save a user preference to long-term storage.""" store = runtime.store store.put(("user_prefs",), key, {"value": value}) return f"Saved {key}={value}"

store = InMemoryStore()

agent = create_agent( model="gpt-4.1", tools=[get_user_preference, save_user_preference], store=store )

</python>
</ex-store-in-custom-tools>

<boundaries>
### Agent 可以配置的内容

- 后端类型和配置
- CompositeBackend 的路由规则
- FilesystemBackend 的根目录
- 文件操作的人工参与流程

### Agent 无法配置的内容

- 工具名称(ls、read_file、write_file、edit_file、glob、grep)
- 访问 virtual_mode 限制范围之外的文件
- 未正确配置后端时的跨线程文件访问
</boundaries>

<fix-storebackend-requires-store>
<python>
StoreBackend 需要一个 store 实例。
```python
# WRONG
agent = create_deep_agent(backend=lambda rt: StoreBackend(rt))

# CORRECT
agent = create_deep_agent(backend=lambda rt: StoreBackend(rt), store=InMemoryStore())
StoreBackend 需要一个 store 实例。 ```typescript // WRONG const agent = await createDeepAgent({ backend: (c) => new StoreBackend(c) });

// CORRECT const agent = await createDeepAgent({ backend: (c) => new StoreBackend(c), store: new InMemoryStore() });

</typescript>
</fix-storebackend-requires-store>

<fix-statebackend-files-dont-persist>
<python>
StateBackend 的文件限定在线程内——请使用相同的 thread_id,或使用 StoreBackend 实现跨线程访问。
```python
# WRONG: thread-2 can't read file from thread-1
agent.invoke({"messages": [...]}, config={"configurable": {"thread_id": "thread-1"}})  # Write
agent.invoke({"messages": [...]}, config={"configurable": {"thread_id": "thread-2"}})  # File not found!
StateBackend 的文件限定在线程内——请使用相同的 thread_id,或使用 StoreBackend 实现跨线程访问。 ```typescript // WRONG: thread-2 can't read file from thread-1 await agent.invoke({ messages: [...] }, { configurable: { thread_id: "thread-1" } }); // Write await agent.invoke({ messages: [...] }, { configurable: { thread_id: "thread-2" } }); // File not found! ``` 路径必须匹配 CompositeBackend 的路由前缀,才能实现持久化。 ```python # With routes={"/memories/": StoreBackend(rt)}: agent.invoke(...) # /prefs.txt -> ephemeral (no match) agent.invoke(...) # /memories/prefs.txt -> persistent (matches route) ``` 路径必须匹配 CompositeBackend 的路由前缀,才能实现持久化。 ```typescript // With routes: { "/memories/": StoreBackend }: await agent.invoke(...); // /prefs.txt -> ephemeral (no match) await agent.invoke(...); // /memories/prefs.txt -> persistent (matches route) ``` 生产环境请使用 PostgresStore(InMemoryStore 会在重启后丢失)。 ```python # WRONG # CORRECT store = InMemoryStore() store = PostgresStore(connection_string="postgresql://...") ``` 生产环境请使用 PostgresStore(InMemoryStore 会在重启后丢失)。 ```typescript // WRONG // CORRECT const store = new InMemoryStore(); const store = new PostgresStore({ connectionString: "..." }); ``` 启用 virtual_mode=True 以限制路径访问(防止通过 ../ 和 ~/ 路径逃逸)。 ```python backend = FilesystemBackend(root_dir="/project", virtual_mode=True) # Secure ``` CompositeBackend 会优先匹配最长前缀。 ```python routes = {"/mem/": StoreBackend(rt), "/mem/temp/": StateBackend(rt)} # /mem/file.txt -> StoreBackend, /mem/temp/file.txt -> StateBackend (longer match) ```

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