opencode-chat-channel

An opencode plugin that connects instant messaging bots to opencode AI via a unified multi-channel architecture.

Currently supported: Feishu (Lark) via WebSocket long connection — no public IP required.
Skeleton ready: WeCom (企业微信) — see src/channels/wecom/index.ts.

中文说明 · English

English

How It Works

User sends message (Feishu / WeCom / ...)
    ↓ Channel adapter (WebSocket / HTTP callback / ...)
chat-channel plugin (this repo)
    ↓ client.session.prompt()
opencode AI (Sisyphus)
    ↓ text reply
User receives reply

• Each user (open_id / user ID) gets their own persistent opencode session
• Sessions expire after 2 hours of inactivity (auto-cleanup)
• Replies longer than 4000 characters are automatically split

Installation

Since this is an opencode plugin, opencode handles installation automatically via npm. No scripts needed.

Step 1: Add to opencode.json

Edit ~/.config/opencode/opencode.json and add the plugin:

{
  "plugin": [
    "opencode-chat-channel@latest"
  ]
}

opencode will pull and install the package automatically on next startup.

Step 2: Select channels to enable

Add CHAT_CHANNELS to ~/.config/opencode/.env to control which channels are active:

# ~/.config/opencode/.env

# Enable Feishu only (recommended to start)
CHAT_CHANNELS=feishu

# Enable multiple channels at once
# CHAT_CHANNELS=feishu,wecom

# Leave unset or empty = auto mode: any channel with valid credentials starts automatically
# CHAT_CHANNELS=

Then configure credentials for each enabled channel (see sections below).

Step 3: Configure channel credentials

See the Feishu Configuration section below.

Feishu Configuration

Step 1: Create a Feishu Self-Built App

1. Visit Feishu Open Platform and create a self-built app
2. Note your App ID and App Secret
3. Under "Add App Capabilities", enable Bot
4. Under "Permissions", add:
   • im:message (read/send messages)
   • im:message.group_at_msg (receive group @ messages, optional)
5. Under "Event Subscriptions":
   • Select "Use long connection to receive events" (no webhook URL needed)
   • Add event: Receive Message v2.0 (im.message.receive_v1)
6. Publish the app version

Step 2: Store Credentials

App ID (non-sensitive, store in .env):

# ~/.config/opencode/.env
FEISHU_APP_ID=cli_xxxxxxxxxxxxxxxx

# Optional: custom opencode API URL (default: http://localhost:4321)
# OPENCODE_BASE_URL=http://localhost:4321

App Secret — choose the method for your platform:

| Platform | Method | Command | |----------|--------|---------| | macOS | Keychain (recommended) | security add-generic-password -a chat-channel -s opencode-chat-channel -w <secret> -U | | Windows / Linux | .env file | Add FEISHU_APP_SECRET=<secret> to ~/.config/opencode/.env | | All platforms | Environment variable | Set FEISHU_APP_SECRET=<secret> before launching opencode |

Priority: environment variable → macOS Keychain → .env file value (already loaded as env var). The plugin tries each in order and uses the first one found.

⚠️ If you store the secret in .env, ensure the file has restricted permissions: chmod 600 ~/.config/opencode/.env

macOS Keychain (verify):

security find-generic-password -a chat-channel -s opencode-chat-channel -w

Step 3: Start opencode

opencode

You should see in the logs:

[feishu] 飞书机器人已启动（长连接模式），appId=cli_xxx***
chat-channel 已启动，活跃渠道: feishu

Adding a New Channel

The plugin uses a ChatChannel interface. To add a new channel:

1. Create src/channels/<name>/index.ts implementing ChatChannel and exporting a ChannelFactory
2. Register the factory in src/index.ts → CHANNEL_FACTORIES array

// src/channels/myapp/index.ts
import type { ChatChannel, ChannelFactory } from "../../types.js";

class MyAppChannel implements ChatChannel {
  readonly name = "myapp";
  async start(onMessage) { /* connect, call onMessage on each msg */ }
  async send(target, text) { /* send reply */ }
}

export const myappChannelFactory: ChannelFactory = async (client) => {
  // read credentials, return null if not configured
  return new MyAppChannel(...);
};

// src/index.ts — add to CHANNEL_FACTORIES
import { myappChannelFactory } from "./channels/myapp/index.js";

const CHANNEL_FACTORIES: ChannelFactory[] = [
  feishuChannelFactory,
  myappChannelFactory, // ← add here
];

FAQ

Q: Plugin starts but bot receives no messages

• Ensure event subscription is set to "long connection", not "HTTP callback URL"
• Ensure the app version is published and online
• Verify App ID / Secret are correct

Q: Replies are slow

• AI processing takes time; complex tasks may need 10–30 seconds
• Simple conversations typically 3–8 seconds

Q: How to reset conversation history

• Restart opencode (sessions follow process lifecycle)
• Or wait 2 hours for session TTL to expire

中文说明

工作原理

用户发消息（飞书 / 企业微信 / ...）
    ↓ 渠道适配器（WebSocket 长连接 / HTTP 回调 / ...）
chat-channel 插件（本仓库）
    ↓ client.session.prompt()
opencode AI (Sisyphus)
    ↓ 回复文本
用户收到回复

• 每个用户独享一个 opencode session，对话历史持久保留
• session 闲置 2 小时后自动回收，下次对话开新 session
• AI 回复超过 4000 字时自动分段发送

安装

本项目是 opencode 插件，opencode 通过 npm 自动管理安装，无需额外脚本。

第一步：添加到 opencode.json

编辑 ~/.config/opencode/opencode.json，在 plugin 数组中添加：

{
  "plugin": [
    "opencode-chat-channel@latest"
  ]
}

下次启动 opencode 时会自动拉取并安装。

第二步：选择要启用的渠道

在 ~/.config/opencode/.env 中配置 CHAT_CHANNELS，指定要开启哪些渠道：

# ~/.config/opencode/.env

# 只开启飞书（初始推荐）
CHAT_CHANNELS=feishu

# 同时开启多个渠道
# CHAT_CHANNELS=feishu,wecom

# 留空或不配置 = 自动模式：凭证存在的渠道自动启用
# CHAT_CHANNELS=

然后配置对应渠道的凭证（见下方各渠道配置说明）。

第三步：配置渠道凭证

参见下方各渠道的配置说明。

飞书配置

第一步：创建飞书自建应用

1. 访问 飞书开放平台，新建企业自建应用
2. 记录 App ID 和 App Secret
3. 在「添加应用能力」中开启机器人
4. 在「权限管理」中添加以下权限：
   • im:message（读取/发送消息）
   • im:message.group_at_msg（接收群组 @ 消息，按需）
5. 在「事件订阅」中：
   • 选择使用长连接接收事件（无需填写请求地址）
   • 添加事件：接收消息 v2.0（即 im.message.receive_v1）
6. 发布应用版本

第二步：写入凭证

App ID（非敏感，明文存 .env）：

# ~/.config/opencode/.env
FEISHU_APP_ID=cli_xxxxxxxxxxxxxxxx

# 可选：自定义 opencode API 地址（默认：http://localhost:4321）
# OPENCODE_BASE_URL=http://localhost:4321

App Secret—按使用的平台选择存储方式：

| 平台 | 方式 | 命令 | |------|------|------| | macOS | 钒匙串（推荐，不落盘明文） | security add-generic-password -a chat-channel -s opencode-chat-channel -w <secret> -U | | Windows / Linux | 写入 .env 文件 | 在 ~/.config/opencode/.env 中添加 FEISHU_APP_SECRET=<secret> | | 所有平台 | 环境变量 | 启动 opencode 前设置 FEISHU_APP_SECRET=<secret> |

读取优先级：环境变量 → macOS 钒匙串 → .env 文件（已在插件启动时自动读入环境变量）。 插件依次尝试，找到第一个有效值即停止。

⚠️ 如果将 Secret 写入 .env，建议限制文件权限： chmod 600 ~/.config/opencode/.env

macOS 钒匙串验证：

security find-generic-password -a chat-channel -s opencode-chat-channel -w

第三步：启动 opencode

opencode

启动后日志中会看到：

[feishu] 飞书机器人已启动（长连接模式），appId=cli_xxx***
chat-channel 已启动，活跃渠道: feishu

接入新渠道

插件基于 ChatChannel 接口设计，新增渠道步骤：

1. 新建 src/channels/<渠道名>/index.ts，实现 ChatChannel 接口并导出 ChannelFactory
2. 在 src/index.ts 的 CHANNEL_FACTORIES 数组中注册工厂函数

参见 src/channels/wecom/index.ts — 企业微信骨架，含详细的实现 TODO 注释。

项目结构

src/
├── index.ts                    # 插件入口，注册所有渠道
├── types.ts                    # ChatChannel 接口 & 公共类型
├── session-manager.ts          # opencode session 管理 & 工具函数
└── channels/
    ├── feishu/
    │   └── index.ts            # 飞书渠道实现（已完成）
    └── wecom/
        └── index.ts            # 企业微信渠道骨架（待实现）

常见问题

Q: 插件启动后收不到消息

• 确认飞书应用事件订阅选择的是「长连接」而非「HTTP 请求地址」
• 确认应用已发布且版本已上线
• 确认 App ID/Secret 正确

Q: 回复很慢

• AI 处理需要时间，复杂问题可能需要 10-30 秒
• 简单对话通常 3-8 秒

Q: 想重置对话历史

• 关闭 opencode 重启即可（session 随进程生命周期）
• 或等待 2 小时 session 超时自动重置

License

MIT