HomeAPI ReferenceEndpointsB3OS Workflow APIPost V1 Runs Sync POST /v1/runs/sync Copy page Copy pageCopy as Markdown View as MarkdownOpen raw text in new tab Open in ChatGPTCopy page & open chat Open in ClaudeCopy page & open chat Open in PerplexitySearch with AI Copy MCP ServerCopy endpoint URL Connect to CursorInstall MCP in Cursor Connect to VS CodeInstall MCP in VS Code Execute a workflow definition synchronously. Blocks until all nodes complete and returns the full execution state. Max 60s timeout, 20 nodes. Was this page helpful? Previous Retry outbound webhook delivery Next Batch run transaction attribution