/handoff-execute

Receive a handoff brief in a fresh agent session and execute it end-to-end with a source-ingestion gate before planning, source-cited plan steps, acceptance-verified output, and a ground-truth retro. This is the receiving-side counterpart to /handoff — /handoff writes the brief, /handoff-execute enforces the discipline that turns the brief into ground-truth work.

Structured execution spec: protocol.yon. Read it for the canonical rules and step sequence; this file is explanation. The two must stay in sync — if you edit one, update the other and refresh the @STAMP date.

Boundary

Use handoff-execute to consume a handoff brief produced by /handoff (YAML frontmatter type: handoff + YON body blocks). Do not use it for:

• PLAN.md or implementation_plan.md — use /plan-execute (different schema, no @SOURCES block, no retro requirement).
• A formal post-execution self-gate — use /verify (requires intent/plan/execution artifacts; checks for drift).
• Independent outside-agent review of completed work — use /cold-review (reviews, doesn't execute).
• Re-verifying one specific claim — use /double-check.

handoff-execute is the only skill that consumes a handoff brief and produces the canonical retro file.

Invocation