Skip to main content

Interface: IChannelAdapter

Defined in: packages/agentos/src/io/channels/IChannelAdapter.ts:55

Core adapter interface for external messaging channels.

Implementors wrap a platform SDK (e.g., grammY for Telegram, discord.js for Discord) and normalize all interactions to this common contract.

Example​

class TelegramAdapter implements IChannelAdapter {
  readonly platform = 'telegram';
  readonly displayName = 'Telegram';
  readonly capabilities = ['text', 'images', 'inline_keyboard', 'typing_indicator'];

  async initialize(auth: ChannelAuthConfig): Promise<void> {
    this.bot = new Bot(auth.credential);
    await this.bot.start();
  }

  async sendMessage(conversationId, content): Promise<ChannelSendResult> {
    const textBlock = content.blocks.find(b => b.type === 'text');
    const msg = await this.bot.api.sendMessage(conversationId, textBlock.text);
    return { messageId: String(msg.message_id) };
  }
  // ...
}

Properties​

capabilities​

readonly capabilities: readonly ChannelCapability[]

Defined in: packages/agentos/src/io/channels/IChannelAdapter.ts:65

Declared capabilities of this adapter.

displayName​

readonly displayName: string

Defined in: packages/agentos/src/io/channels/IChannelAdapter.ts:62

Human-readable display name (e.g., "WhatsApp Business").

platform​

readonly platform: ChannelPlatform

Defined in: packages/agentos/src/io/channels/IChannelAdapter.ts:59

Platform this adapter serves.

Methods​

addReaction()?​

optional addReaction(conversationId, messageId, emoji): Promise<void>

Defined in: packages/agentos/src/io/channels/IChannelAdapter.ts:134

Add a reaction to a message. Only available if adapter declares the 'reactions' capability.

Parameters​

conversationId​

string

messageId​

string

emoji​

string

Returns​

Promise<void>

deleteMessage()?​

optional deleteMessage(conversationId, messageId): Promise<void>

Defined in: packages/agentos/src/io/channels/IChannelAdapter.ts:128

Delete a previously sent message. Only available if adapter declares the 'deletion' capability.

Parameters​

conversationId​

string

messageId​

string

Returns​

Promise<void>

editMessage()?​

optional editMessage(conversationId, messageId, content): Promise<void>

Defined in: packages/agentos/src/io/channels/IChannelAdapter.ts:122

Edit a previously sent message. Only available if adapter declares the 'editing' capability.

Parameters​

conversationId​

string

messageId​

string

content​

MessageContent

Returns​

Promise<void>

getConnectionInfo()​

getConnectionInfo(): ChannelConnectionInfo

Defined in: packages/agentos/src/io/channels/IChannelAdapter.ts:85

Get the current connection status and metadata.

Returns​

ChannelConnectionInfo

getConversationInfo()?​

optional getConversationInfo(conversationId): Promise<{ isGroup: boolean; memberCount?: number; metadata?: Record<string, unknown>; name?: string; }>

Defined in: packages/agentos/src/io/channels/IChannelAdapter.ts:139

Get conversation metadata (name, members, etc.). Useful for group chats.

Parameters​

conversationId​

string

Returns​

Promise<{ isGroup: boolean; memberCount?: number; metadata?: Record<string, unknown>; name?: string; }>

initialize()​

initialize(auth): Promise<void>

Defined in: packages/agentos/src/io/channels/IChannelAdapter.ts:74

Initialize the adapter with authentication credentials. Called once when the extension is activated. Must be idempotent — calling initialize on an already-initialized adapter should reconnect.

Parameters​

auth​

ChannelAuthConfig

Returns​

Promise<void>

on()​

on(handler, eventTypes?): () => void

Defined in: packages/agentos/src/io/channels/IChannelAdapter.ts:114

Register a handler for channel events. Multiple handlers can be registered. Use eventTypes to filter which events to receive.

Parameters​

handler​

ChannelEventHandler

Callback invoked when an event occurs.

eventTypes?​

ChannelEventType[]

Optional filter. If omitted, handler receives all events.

Returns​

Unsubscribe function.

(): void

Returns​

void

sendMessage()​

sendMessage(conversationId, content): Promise<ChannelSendResult>

Defined in: packages/agentos/src/io/channels/IChannelAdapter.ts:96

Send a message to a conversation on the external platform.

Parameters​

conversationId​

string

Platform-native conversation/chat ID.

content​

MessageContent

Message content to send.

Returns​

Promise<ChannelSendResult>

The platform-assigned message ID.

sendTypingIndicator()​

sendTypingIndicator(conversationId, isTyping): Promise<void>

Defined in: packages/agentos/src/io/channels/IChannelAdapter.ts:102

Send a typing indicator to a conversation. Not all platforms support this — check capabilities for 'typing_indicator'.

Parameters​

conversationId​

string

isTyping​

boolean

Returns​

Promise<void>

shutdown()​

shutdown(): Promise<void>

Defined in: packages/agentos/src/io/channels/IChannelAdapter.ts:80

Gracefully shut down the adapter, closing connections and releasing resources. Called during extension deactivation or application shutdown.

Returns​

Promise<void>