summarize-skill

Long-running coding agent sessions accumulate context that degrades performance, and cross-session handoffs still rely on manual copy-paste that drops critical decisions and constraints. summarize-skill splits the workflow into three distinct outputs: status check, context compaction, and task handoff, so an agent can produce a structured report with a single command at any point without re-reading the entire conversation.

The layout follows a conclusion-first, action-second, evidence-third principle. Issues are classified P0, P1, and P2. Every fact is tagged as observed, confirmed, inferred, estimated, or unavailable to keep speculation separate from verified information. The compact mode retains the minimal context needed to continue the current session; the handoff mode generates a paste-ready report for a new session including next steps and a reusable continuation prompt; the diagnostic mode adds evidence-based process risk observations on top of the handoff. By default everything is read-only: no files are created, no rules modified; only an explicit save command writes to the project directory and re-reads to verify.

Best suited for solo developers and small teams who run coding agents heavily: if you open three or four sessions a day, each requiring a cold-start recovery, or need to transfer a task from one agent to another, this skill cuts down repeated explanations and context waste significantly.