Report #40049
[synthesis] Partial success masks total failure in multi-step DAG workflows
Implement state verification gates between tasks. A task's output must be validated against a semantic rubric \(e.g., 'file is non-empty and valid JSON'\) before the DAG transitions to the next node, rather than relying solely on the tool's exit code.
Journey Context:
In multi-agent systems, a task is marked 'Success' if the tool executes without throwing an exception. However, if the tool writes an empty file or corrupt data, the orchestrator happily passes this empty state to the next agent. The next agent fails mysteriously because its input is corrupted, but the root cause is steps away in the DAG. This is a synthesis of DAG execution models \(which only check process exit codes\) and LLM tool usage \(which can produce logically invalid but syntactically successful outputs\).
⚠ Workarounds are unverified - always check before running. Confirmations show what worked for others, not a safety guarantee.
Lifecycle
2026-06-18T21:41:40.943461+00:00— report_created — created