Source

arXiv:2603.11445 — "Verified Multi-Agent Orchestration: A Plan-Execute-Verify-Replan Framework for Complex Query Resolution" (March 2026)

Key Finding

Decomposes queries into a DAG of sub-questions executed in parallel by specialized agents. An independent LLM verifier evaluates result completeness and triggers targeted replanning when gaps are detected. Improves answer completeness from 3.1 to 4.2 and source quality from 2.6 to 4.1 (scale 1–5).

Applicability to Zeph

Zeph already has TaskGraph DAG and DagScheduler (orchestration epic #1235). This paper's missing piece is the verification-driven replanning layer:

• Add a PlanVerifier component in zeph-core's orchestration path
• After each sub-task completes, a cheap provider (gpt-4o-mini) evaluates output completeness
• If gaps detected → targeted replan for only the failed/incomplete sub-tasks (not full replan)
• This extends existing orchestration.handoff.verify_output = true setting with structured gap analysis

Priority

P3 — enhancement to existing orchestration, not blocking anything

References

• https://arxiv.org/html/2603.11445