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Crew Wires Claude Code, Codex and OpenCode Sessions Together Through Lifecycle Hooks and a Read-Only Registry
Crew launched on Show HN on 2026-09-07 at 21 stars and MIT, using SessionStart, UserPromptSubmit, PostToolUse and Stop hooks to inject live status about other running agent sessions into each agent's context, let agents message each other, and prevent conflicting edits on a shared codebase. State lives in a read-only registry under ~/.crew/, transcripts are read but never modified, and hooks exit cleanly on failure so a broken registry cannot block an agent. This is multi-agent orchestration built entirely out of one harness feature, with no daemon and no server, which is a materially cheaper design than the orchestrator frameworks it competes with.
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