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Deno Deploy 提供用于隔离代码执行的 Linux microVM。最适合 Deno 和 JavaScript 工作负载。

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设置

npm install @langchain/deno

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认证

从 app.deno.com → Settings → Organization Tokens 获取您的令牌。 
export DENO_DEPLOY_TOKEN=your_token
或者直接传递凭据： 
const sandbox = await DenoSandbox.create({
  auth: { token: "your-token-here" },
});

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与 deepagents 结合使用

import { createDeepAgent } from "deepagents";
import { ChatAnthropic } from "@langchain/anthropic";
import { DenoSandbox } from "@langchain/deno";

const sandbox = await DenoSandbox.create({
  memoryMb: 1024,
  lifetime: "10m",
});

try {
  const agent = createDeepAgent({
    model: new ChatAnthropic({ model: "claude-sonnet-4-20250514" }),
    systemPrompt: "You are a coding assistant with sandbox access.",
    backend: sandbox,
  });

  const result = await agent.invoke({
    messages: [{ role: "user", content: "Create a hello world Deno app and run it" }],
  });
} finally {
  await sandbox.close();
}

​
独立使用

import { DenoSandbox } from "@langchain/deno";

const sandbox = await DenoSandbox.create({
  memoryMb: 1024,
  lifetime: "10m",
});

const result = await sandbox.execute("deno --version");
console.log(result.output);

await sandbox.close();

​
配置

选项类型默认值描述
memoryMbnumber768内存（MB） (768-4096)
lifetime"session" | string"session"生命周期 ("session", "5m", "30s")
regionstring-区域。选项: "ams" | "ord"

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可用区域

区域代码位置
ams阿姆斯特丹
ord芝加哥

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生命周期选项

  • "session" (默认): 当您关闭/处置客户端时，沙盒关闭
  • 持续时间字符串: 保持沙盒存活特定时间 (例如 "5m", "30s")

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访问 Deno SDK

要使用高级功能，请访问底层 Deno SDK： 
const denoSandbox = await DenoSandbox.create();
const sdk = denoSandbox.sandbox;

// Expose HTTP port
const url = await sdk.exposeHttp({ port: 3000 });

// Expose SSH
const ssh = await sdk.exposeSsh();

// Evaluate JavaScript
const result = await sdk.eval("1 + 2");

// Set environment variables
await sdk.env.set("API_KEY", "secret");

// Shell template literals
const output = await sdk.sh`echo "Hello from Deno!"`.text();

// Start a JavaScript runtime
const runtime = await sdk.createJsRuntime({ entrypoint: "server.ts" });

​
重新连接到现有沙盒

重新连接需要基于持续时间的生命周期（不是 "session"）： 
// Create with duration lifetime
const sandbox = await DenoSandbox.create({
  memoryMb: 1024,
  lifetime: "30m",
});
const sandboxId = sandbox.id;
await sandbox.close(); // Close connection, sandbox keeps running

// Later: reconnect
const reconnected = await DenoSandbox.connect(sandboxId);
const result = await reconnected.execute("ls -la");

​
工厂函数

import { createDenoSandboxFactory, createDenoSandboxFactoryFromSandbox } from "@langchain/deno";

// Create new sandbox per invocation
const factory = createDenoSandboxFactory({ memoryMb: 1024 });

// Or reuse an existing sandbox across invocations
const sandbox = await DenoSandbox.create();
const reuseFactory = createDenoSandboxFactoryFromSandbox(sandbox);

​
错误处理

import { DenoSandboxError } from "@langchain/deno";

try {
  await sandbox.execute("some command");
} catch (error) {
  if (error instanceof DenoSandboxError) {
    switch (error.code) {
      case "NOT_INITIALIZED":
        await sandbox.initialize();
        break;
      case "COMMAND_TIMEOUT":
        console.error("Command took too long");
        break;
      case "AUTHENTICATION_FAILED":
        console.error("Check your Deno Deploy token");
        break;
    }
  }
}

​
错误代码

代码描述
NOT_INITIALIZED沙盒未初始化 - 调用 initialize()
ALREADY_INITIALIZED无法初始化两次
AUTHENTICATION_FAILED无效或缺失的 Deno Deploy 令牌
SANDBOX_CREATION_FAILED创建沙盒失败
SANDBOX_NOT_FOUND沙盒 ID 未找到或已过期
COMMAND_TIMEOUT命令执行超时
COMMAND_FAILED命令执行失败
FILE_OPERATION_FAILED文件读/写失败
RESOURCE_LIMIT_EXCEEDEDCPU、内存或存储限制超出

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限制和约束

约束值
最小内存768 MB
最大内存4096 MB (4 GB)
磁盘空间10 GB
vCPUs2
工作目录/home/app
网络访问完全（默认）

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环境变量

变量描述
DENO_DEPLOY_TOKENDeno Deploy 组织访问令牌
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