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From postbox
Read cross-session task handoffs in the postbox mailbox. Use when the user asks what handoffs/briefs are waiting, to check the postbox inbox, or to explain how postbox works. Surfaces envelopes addressed to this session; never auto-sends/claims/reports — those are operator-fired via /postbox:* commands.
How this skill is triggered — by the user, by Claude, or both
Slash command
/postbox:postboxThe summary Claude sees in its skill listing — used to decide when to auto-load this skill
postbox moves task handoffs between independent agent sessions through a directory of
postbox moves task handoffs between independent agent sessions through a directory of
Markdown "envelope" files, using atomic renames (the qmail Maildir pattern). Status
lives in the path: ready/ → claimed/ → done/. No server, no database.
The CLI derives the mailbox location and this session's addresses from the nearest
.postbox.toml, so no flags are needed:
node "${CLAUDE_PLUGIN_ROOT}/bin/postbox.mjs" inbox --format human
Add --format json to parse it, or --as-source <role> to see completed handoffs you sent.
settings.json does./postbox:send — address a handoff to another session/postbox:claim <id> --session <s> — take a handoff (race-free; exit 3 = already taken)/postbox:report <id> --session <s> --outcome <ref> — finish it; the outcome returns to the sender/postbox:inbox — list what's waitingnpx claudepluginhub rcmiskin10/postbox --plugin postboxCreates, edits, and optimizes skills for Claude Code, including drafting, evaluating with test prompts, iterating on performance, and improving skill descriptions for better triggering accuracy.