POST /api/{kind}/{slug}/run                       universal JSON
POST /api/{kind}/{slug}/openai/chat/completions   OpenAI-compatible
POST /api/{kind}/{slug}/webhook/{platform}        platform-shaped
POST /api/{kind}/{slug}/mcp                       Streamable HTTP MCP
GET  /api/{kind}/{slug}/integrations              copy-paste URLs

Platforms for webhook: closebot, vapi, retell, custom, ghl (team only).