Summary

Two related feature requests for the Feishu plugin:

1. Support Card rendering in non-streaming mode - Allow rich formatting (tables, code blocks) without requiring streaming
2. Fix streaming mode truncation - Handle long content gracefully in streaming mode

Current Behavior

Users must choose between good formatting OR complete content, but cannot have both.

Problem Details

1. Non-streaming lacks Card support

• sendMessageFeishu() uses msg_type: "text"
• No option to use msg_type: "interactive" for Card rendering
• Tables and code blocks display poorly as plain text

2. Streaming truncates long content

• Streaming uses Feishu CardKit API with ~30KB size limit
• Content beyond the limit is silently truncated
• No automatic chunking or continuation to new cards

Proposed Solutions

Solution 1: Add renderMode config

{
  "channels": {
    "feishu": {
      "renderMode": "auto" | "raw" | "card"
    }
  }
}

• auto (default): Card for messages with code/tables, text otherwise
• raw: Always plain text
• card: Always interactive card

Solution 2: Handle streaming overflow

When streaming content approaches the size limit:

• Close current card gracefully
• Create a new card to continue
• Or fall back to chunked text messages

Environment

• OpenClaw version: 2026.2.2-3
• Feishu plugin: @openclaw/feishu (official)

Related

Third-party plugin @noah-claw/feishu already supports renderMode, showing this is technically feasible.