Clean session handoffs. When you pass in-progress work to another agent — a fresh window, a future session, a different model — that runner starts with zero of your context. A baton is a single markdown file that lets them grab the work and sprint instead of re-deriving everything you already know.

Capture what the next runner can't reconstruct from the code or git history — your intent, the dead ends you already ruled out, and the exact next step — grounded in verified repo state, not your chat narrative.

There are two sides to the skill: drop a baton (you're handing off) and grab a baton (you're picking one up).

Drop a baton when:

• A session ends with work unfinished and someone/something will continue it.
• The user says "hand this off", "pick up later", "pass this to another agent".
• You're running low on context and want to checkpoint before it's summarized away.
• You're about to dispatch the rest of the work to a separate agent/session.

Grab a baton when:

• Starting work in a repo where a prior session may have left one (check first).

Don't use for: a finished task (no handoff needed), or durable architecture rationale (that belongs in a long-lived design doc).

• Batons live in .baton/ at the repo root — local scratch, git-ignored, never committed.
• Filename is <YYYY-MM-DD>-<short-slug>.md; the next agent finds the latest with ls -t .baton/.
• The iron rule — verify before you write. A baton built from the chat story instead of repo reality is worse than none. Run git status and git branch --show-current first; the "State of play" section must reflect runtime truth, not the conversation.
• The format is a fixed set of sections — Intent & Goal, State of Play (verified against git), Learnings & Landmines, Pointers, Next Steps, Open Questions — so every handoff has a consistent, scannable shape.
• The highest-value content is the dead ends already ruled out: naming what didn't work saves the next runner a full re-derivation.

git clone https://github.com/blader/baton.git ~/.claude/skills/baton

git clone https://github.com/blader/baton.git ~/.codex/skills/baton

SKILLS_DIR="${CLAUDE_SKILLS_DIR:-${CODEX_SKILLS_DIR:-$HOME/.claude/skills}}" && \
git clone https://github.com/blader/baton.git "$SKILLS_DIR/baton"

Then restart your agent. The skill activates on handoff/resume triggers. You can also invoke it explicitly:

Drop a baton for the next session. Hand this off — write a baton. Check for a baton and pick up where it left off.

MIT