AI reply block

Send an AI-generated reply mid-flow. Falls back to a static text on failure.

Config

• System prompt — instructions to the AI. Supports {{variable}} substitution. Typically populated from the Chat AI persona automatically.
• User prompt — the message to the AI. Often something like "The customer asked: {{run.last_inbound_text}}".
• Fallback text — sent if the AI errors or returns empty.

Auto-populated run vars

After the call:

• {{run.ai_[blockId]_ok}} — true if a non-empty reply came back
• {{run.ai_[blockId]_text}} — the AI’s reply (for downstream blocks to reference)
• {{run.ai_[blockId]_error}} — error text if any

Behaviour

• Calls the platform’s central AI surface (same as the Chat AI agent uses)
• The reply is sent as a normal text message via the channel
• Auto-advances via the Continue socket