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Lark Notifications

Connect Opsion to any Lark group chat using a custom bot webhook. Whenever an alert rule fires, Opsion posts a message to that group including transaction details and a direct link to the block explorer.

How it works

Lark custom bots are lightweight integrations that accept incoming messages via a webhook URL. You add the bot to a group, copy the webhook URL Lark provides, and paste it into Opsion Settings. No OAuth app approval or admin consent is required.

Create a Lark custom bot

  1. Open Lark (desktop or web) and navigate to the group chat where you want to receive alerts. If you do not have a dedicated group yet, create one.
  2. Click the group name at the top to open group settings, then select Bots → Add Bot → Custom Bot.
  3. Give the bot a name (e.g. Opsion Alerts) and an optional description. Click Add.
  4. Lark will display a webhook URL. Copy it — it looks like:
    text
    https://open.larksuite.com/open-apis/bot/v2/hook/xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
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Feishu users

If your organisation uses Feishu (the mainland China version of Lark), the webhook URL domain will be open.feishu.cn instead of open.larksuite.com. Both formats work with Opsion.

Add the webhook to Opsion

  1. Open the Opsion console and go to Settings → Notifications.
  2. Paste your webhook URL into the Lark Webhook URL field.
  3. Click Save.

Enable Lark on alert rules

For each rule where you want Lark notifications:

  1. Open Alerts → Rules and click the rule.
  2. In Notification channels, toggle Lark on.
  3. Save the rule.
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Plan requirement

Lark notifications require the Team plan or above.

Message format

Lark messages are sent as plain text:

text
Large transfer detected on asset
Tx 0x27b037ae | -1.5 ETH | ethereum
View on explorer: https://etherscan.io/tx/0x27b037ae...
Open in Opsion: https://console.opsion.xyz/transactions?hash=0x27b037ae...
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