openclaw-seatalk

OpenClaw channel plugin for SeaTalk messaging.

Features

Messaging

• Private chat — bidirectional text, image, file messaging with bot subscribers
• Group chat — receive @mentioned messages, send text/image/file replies; configurable group allow-list and per-sender access control
• Thread messages — each DM or group thread runs as an isolated agent session that inherits the parent transcript on first reply; replies are routed back to the originating thread
• Quoted messages — inbound messages with quoted_message_id are automatically resolved (text + media download) and provided to the AI as context
• Media handling — inbound: image/file/video URL download; outbound: image/file base64 upload; video receive-only
• Typing indicator — one-shot typing status via SeaTalk API for both private and group chats (configurable: typing or off)

Agent Tool

• group_history — fetch group chat messages in chronological order with auto-resolved quoted messages
• group_info — get group details (name, avatar, member list)
• group_list — list groups the bot has joined
• thread_history — fetch DM or group thread messages with auto-resolved quoted messages
• get_message — retrieve any message by ID

Infrastructure

• Gateway modes — webhook (direct HTTP server), websocket (official SeaTalk WebSocket, no public URL), or relay (WebSocket client via seatalk-relay)
• Security — SHA256 signature verification for incoming events (webhook/relay modes; websocket mode authenticates the connection itself)
• Token management — automatic access token obtain, cache, and refresh
• Outbound coalescing — consecutive reply payloads are merged into a single message with automatic markdown-aware chunking at 4000 chars; configurable via outboundCoalescing
• Deduplication — event ID dedup + per-sender debounce buffer (thread-aware)
• Access control — DM policy (open/allowlist/pairing), group policy (disabled/allowlist/open), per-group and per-sender allow-lists
• Email resolution — email-to-employee_code lookup for outbound message targets
• Multi-account — multiple SeaTalk bot apps in one OpenClaw instance
• Health probing — connection health check on startup
• CLI onboarding — interactive setup wizard

Prerequisites

1. Create a Bot App on SeaTalk Open Platform
2. Get App ID, App Secret from Basic Info & Credentials
3. Get Signing Secret from Event Callback settings (webhook/relay modes only)
4. Enable Bot capability and set status to Online
5. Enable required permissions:
   • Send Message to Bot User
   • Get Employee Code with Email (for email-to-employee_code resolution)
   • Set Typing Status in Private Chat (for DM processing indicator)
   • Set Typing Status in Group Chat (for group processing indicator)
   • Get Chat History (for group history tool)
   • Get Group Info (for group info tool)
   • Get Joined Group Chat List (for group list tool)
   • Get Thread by Thread ID in Private Chat (for DM thread tool)
   • Get Thread by Thread ID (for group thread tool)
6. Configure event delivery in Event Callback settings:
   • Webhook mode: set the callback URL to your OpenClaw server (e.g. https://your-server:3210/callback)
   • Relay mode: set the callback URL to your seatalk-relay service (e.g. https://relay.example.com/seatalk/callback)
   • WebSocket mode: switch the bot to WebSocket delivery; the gateway must already be connected before the portal "Re-verify" passes

Installation

From npm

openclaw plugins install openclaw-seatalk

OpenClaw downloads the package, installs dependencies, and registers the plugin automatically. The plugin will appear in the openclaw onboard channel selection.

v0.2.0 migrated to the new plugin SDK (openclaw/plugin-sdk/*). If you are running OpenClaw < 2026.3.22, pin to 0.1.x:

openclaw plugins install openclaw-seatalk@0.1.6

From source (development)

git clone https://github.com/lf4096/openclaw-seatalk.git
cd openclaw-seatalk
pnpm install
pnpm build
openclaw plugins install -l .

Upgrading

openclaw plugins update openclaw-seatalk
openclaw gateway restart

Upgrading OpenClaw across the 2026.3.22 SDK boundary (e.g. 2026.3.13 -> 2026.3.22):

openclaw plugins disable openclaw-seatalk
openclaw update
openclaw plugins update openclaw-seatalk
openclaw plugins enable openclaw-seatalk
openclaw gateway restart

The plugin must be disabled before upgrading because the old plugin (0.1.x) imports SDK exports removed in OpenClaw >= 2026.3.22. Disabling prevents it from loading during the upgrade.

Gateway Modes

The plugin supports three gateway modes for receiving SeaTalk events:

Webhook Mode (default)

The plugin starts an HTTP server to receive SeaTalk Event Callbacks directly. Suitable when the OpenClaw host is publicly reachable or behind a reverse proxy.

SeaTalk --HTTP POST-> OpenClaw (webhook server)

WebSocket Mode (official, no public URL)

The plugin opens an outbound WebSocket to SeaTalk's official developer-bot endpoint (wss://ws-openapi.haiserve.com/ws/bot) and registers with appId + appSecret. No public callback URL, relay service, or signing secret is required. Switch the bot to WebSocket in the SeaTalk portal (Event Callback settings); the gateway must already be connected before the portal "Re-verify" passes.

SeaTalk WS endpoint <-WebSocket-> OpenClaw (websocket mode)

Relay Mode (recommended for multiple apps sharing one callback)

The plugin connects to a seatalk-relay service as a WebSocket client. The relay service receives webhooks from SeaTalk and forwards events to the plugin. Suitable when OpenClaw runs behind a firewall or NAT without a public address and the official WebSocket mode is not used.

SeaTalk API --HTTP POST-> seatalk-relay <-WebSocket-- OpenClaw (relay mode)

In relay and websocket modes, outbound messages (sending replies) are still sent directly from the plugin to the SeaTalk API.

Configuration

You can configure the plugin interactively:

openclaw configure      # config wizard with SeaTalk channel

Or edit the OpenClaw config file directly (~/.openclaw/openclaw.json).

Webhook mode (DM only)

{
  channels: {
    seatalk: {
      enabled: true,
      mode: "webhook",  // default, can be omitted
      appId: "your_app_id",
      appSecret: "your_app_secret",
      signingSecret: "your_signing_secret",
      webhookPort: 3210,
      webhookPath: "/callback",
      dmPolicy: "open",  // or "allowlist" | "pairing"
      allowFrom: ["*"],  // dmPolicy "open" requires the explicit wildcard
    },
  },
}

WebSocket mode (official, no public URL)

{
  channels: {
    seatalk: {
      enabled: true,
      mode: "websocket",
      appId: "your_app_id",
      appSecret: "your_app_secret",
      dmPolicy: "allowlist",
      allowFrom: ["alice@company.com"],
    },
  },
}

Relay mode with group chat

{
  channels: {
    seatalk: {
      enabled: true,
      mode: "relay",
      appId: "your_app_id",
      appSecret: "your_app_secret",
      signingSecret: "your_signing_secret",
      relayUrl: "ws://relay.example.com:8080/ws",
      dmPolicy: "allowlist",
      allowFrom: ["alice@company.com"],
      groupPolicy: "allowlist",      // "disabled" | "allowlist" | "open"
      groupAllowFrom: ["group_abc123"],
      groupSenderAllowFrom: ["alice@company.com"],  // optional sender-level filter
      processingIndicator: "typing", // "typing" (default) | "off"
      tools: {
        groupInfo: true,
        groupHistory: true,
        groupList: true,
        threadHistory: true,
        getMessage: true,
      },
    },
  },
}

Config fields

Multi-account

Each account has its own credentials and gateway mode. Top-level fields (e.g. tools, dmPolicy) serve as defaults that accounts inherit and can override.

{
  channels: {
    seatalk: {
      dmPolicy: "allowlist",
      tools: { groupHistory: false },
      accounts: {
        production: {
          enabled: true,
          appId: "prod_app_id",
          appSecret: "prod_app_secret",
          signingSecret: "prod_signing_secret",
          mode: "relay",
          relayUrl: "wss://relay.example.com/ws",
          groupPolicy: "open",
        },
        staging: {
          enabled: true,
          appId: "staging_app_id",
          appSecret: "staging_app_secret",
          signingSecret: "staging_signing_secret",
          mode: "webhook",
          webhookPort: 3211,
        },
      },
    },
  },
}

Agent Tool

The plugin registers a seatalk agent tool using a Type.Union schema (each action defines its own required/optional parameters):

Quoted messages: group_history and thread_history auto-resolve quoted_message_id for each message, embedding the result as a quoted_message field. Use get_message for ad-hoc lookups.

Each action can be individually disabled via the tools config.

Development

Install dependencies:

pnpm install

Build dist/:

pnpm build

Format code:

pnpm format

Lint:

pnpm lint

Check formatting and lint:

pnpm check

Publishing

For npm releases, prepublishOnly rebuilds dist/ automatically:

npm version patch
npm publish --access public

For beta builds, publish with the beta dist-tag:

npm publish --tag beta

For ClawHub releases, build first because prepublishOnly does not run:

pnpm build
clawhub package publish .

Inspect tarball contents with npm pack --dry-run.