Deploying with HTTP Cloud Functions

HTTP Cloud Functions are the fastest way to deploy an Agent. They support auto-scaling and pay-as-you-go billing, making them ideal for lightweight Agents and low-frequency invocation scenarios.

Prerequisites

• A CloudBase environment has been activated
• Node.js 18+ is installed
• Agent development is complete

Quick Deployment

1. Project Structure

my-agent/
├── index.js          # Entry file
├── agent.js          # Agent logic
└── package.json      # Dependency configuration

2. Agent Logic

// agent.js
const { createAgent: createLangchainAgent } = require("langchain");
const { MemorySaver } = require("@langchain/langgraph");
const { ChatOpenAI } = require("@langchain/openai");
const { clientTools } = require("@cloudbase/agent-adapter-langchain");

const checkpointer = new MemorySaver();

function createLcAgent() {
  // Use the built-in large model endpoint from CloudBase
  const model = new ChatOpenAI({
    model: process.env.TCB_AI_MODEL || "deepseek-v4-flash",
    apiKey: process.env.TCB_API_KEY,
    configuration: {
      baseURL: `https://${process.env.TCB_ENV_ID}.api.tcloudbasegateway.com/v1/ai/cloudbase/v1`,
    },
  });

  return createLangchainAgent({
    model,
    checkpointer,
    middleware: [clientTools()],
  });
}

module.exports = { createLcAgent };

3. Entry File

// index.js
const { LangchainAgent } = require("@cloudbase/agent-adapter-langchain");
const { createExpressRoutes } = require("@cloudbase/agent-server");
const { createLcAgent } = require("./agent");
const express = require("express");

function createAgent() {
  const lcAgent = createLcAgent();
  return {
    agent: new LangchainAgent({ agent: lcAgent }),
  };
}

const app = express();
createExpressRoutes({ createAgent, express: app });

// Cloud function entry point
exports.main = app;

4. Dependency Configuration

{
  "name": "my-agent",
  "version": "1.0.0",
  "main": "index.js",
  "dependencies": {
    "@cloudbase/agent-adapter-langchain": "latest",
    "@cloudbase/agent-server": "latest",
    "langchain": "latest",
    "@langchain/openai": "latest",
    "@langchain/langgraph": "latest",
    "express": "latest"
  }
}

5. Deployment

Method 1: Deploy with CLI

Prerequisites: Install and log in to the CloudBase CLI

# Install CLI
npm install -g @cloudbase/cli

# Log in
tcb login

Deploy command:

# Run from the project directory
tcb fn deploy <functionName> --httpFn -e <env-id>

# Check deployment status
tcb fn list -e <env-id>

CLI Deployment Advantages

• Fast deployment — no manual packaging or uploading required
• Supports automated command-line deployment
• Can be integrated into CI/CD pipelines
• Detailed deployment logs and error messages

For more CLI commands and options, refer to the CloudBase CLI Documentation.

Method 2: Deploy via Console

Upload a code package through the CloudBase console:

1. Go to the CloudBase console
2. Select Cloud Functions
3. Click Create Cloud Function
4. Select the HTTP Function type
5. Upload the code package or edit the code online

Configuration Reference

Environment Variables

Set environment variables in the cloud function configuration:

Variable	Description	Example
TCB_ENV_ID	CloudBase environment ID	your-env-id
TCB_API_KEY	CloudBase API key	ak-xxx
TCB_AI_MODEL	Model name	deepseek-v4-flash
TCB_AI_PROVIDER	Model provider (optional)	cloudbase

tip

CloudBase has built-in support for Tencent Hunyuan and DeepSeek large models — no external API key required. For the list of supported models, refer to the Model Configuration Guide.

Timeout Configuration

Agents typically require longer execution times. It is recommended to set a generous timeout:

• Recommended timeout: 60–120 seconds
• Maximum timeout: 900 seconds (15 minutes)

Memory Configuration

Configure memory based on Agent complexity:

Scenario	Recommended Memory
Simple conversation	256 MB
With tool calls	512 MB
Complex workflows	1024 MB+

Access Configuration

After deployment, there are two ways to access the Agent service:

Method 1: Access via AI Agent Integration (Recommended)

Create an AI Agent in the CloudBase console, associate it with the deployed cloud function, and obtain a unified access URL.

Steps:

1. Go to the CloudBase console
2. Select AI
3. Click Create Agent
4. Select Existing Service
5. Choose the deployed HTTP cloud function
6. Complete the creation

Access URL:

https://<env-id>.api.tcloudbasegateway.com/v1/aibot/bots/<agent-name>/send-message

Example:

curl 'https://<env-id>.api.tcloudbasegateway.com/v1/aibot/bots/<agent-name>/send-message' \
  -H 'Content-Type: application/json' \
  -H 'Accept: text/event-stream' \
  --data-raw '{
    "threadId": "550e8400-e29b-41d4-a716-446655440000",
    "messages": [
      { "id": "msg-1", "role": "user", "content": "Hello" }
    ],
    "tools": [],
    "context": [],
    "state": {},
    "forwardedProps": {}
  }'

Advantages:

• ✅ Unified access URL format
• ✅ Built-in authentication and access control
• ✅ Supports Agent UI visual debugging
• ✅ Automatic monitoring and logging integration

Method 2: Configure HTTP Access

Directly configure an HTTP access path for the cloud function, suitable for custom access requirements.

Steps:

1. Go to the CloudBase console
2. Select Cloud Functions → HTTP Gateway
3. Click Create
4. Select the cloud function and configure the path
5. Set the authentication method

Access URL:

https://<env-id>.<region>.app.tcloudbase.com/<path>

Example:

https://my-env-xxx.ap-shanghai.app.tcloudbase.com/agent

Authentication Configuration:

Authentication Method	Description	Use Case
No authentication	Public access	Test environments
CloudBase auth	Requires login state	Production environments

Security Note

It is strongly recommended to enable authentication in production environments to prevent API abuse. Method 1 (AI Agent integration) is recommended as it has a more comprehensive built-in security mechanism.

Local Debugging

Before deploying, it is recommended to develop and debug locally. For detailed guidance, refer to:

👉 Local Development Guide

The local development guide covers:

• Getting the project code (GitHub template / syncing from an online service)
• Installing dependencies and configuring environment variables
• Starting the local service
• Debugging with cURL or a proxy
• Troubleshooting common issues

Monitoring & Logging

Viewing Logs

View function logs through the CloudBase console:

1. Go to the CloudBase console
2. Select Cloud Functions → Logs
3. Select the corresponding function to view its logs

Performance Monitoring

View in the console:

• Invocation count
• Average duration
• Error rate
• Memory usage

FAQ

1. Timeout Error

Problem: Function execution times out

Solution:

• Increase the timeout configuration
• Optimize Agent logic to reduce unnecessary API calls
• Consider deploying with CloudBase Run

2. Slow Cold Start

Problem: Slow response on the first call

Solution:

• Reduce the size of dependency packages
• Use provisioned concurrency
• Optimize initialization logic

3. Out of Memory

Problem: OOM error

Solution:

• Increase the memory configuration
• Optimize memory usage
• Avoid loading large models

Best Practices

1. Use environment variables: Configure sensitive information via environment variables
2. Set a reasonable timeout: Set the timeout based on Agent complexity
3. Enable authentication: Authentication must be enabled in production environments
4. Monitor logs: Regularly review logs and performance metrics
5. Error handling: Implement comprehensive error handling logic

Related Documentation

• LangChain TS Adapter Documentation
• Deploying with CloudBase Run
• LangChain Development Guide