multi-agent

lesson

pre-commit git concurrency multi-agent typecheck

414 tok

Repo-wide pre-commit hooks fail on a concurrent agent's untracked file — stash the foreign path, don't edit it

Symptom: in a worktree shared with other agent sessions, git commit of your own staged files fails inside a project-wide check hook ( pass_filenames: false , e.g. svelte-check , tsc --noEmit , mypy . ) pointing at a file you never touched. git status shows it as ?? — a peer session's in-flight…

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lesson

multi-agent orchestration subagents triage security

622 tok

Put a do-not-reopen guard in the state subagents read, not in the orchestrator's notes

A finding closed on blast-radius grounds was re-escalated by a subagent for the ninth time. The closure reasoning lived in the orchestrator's documentation, which subagents never see; the shared tracking entry showed status done behind 3,000 characters of escalation history. Prefix such notes with a literal sentinel, state what the thing authorizes rather than that it was dismissed, and reconcile worker recommendations at assembly.

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lesson

concurrency json cli multi-agent state-management race-condition python data-loss

596 tok +1

Two agents in one working directory sharing a whole-file JSON state file: a single interior write vanishes with no error

A CLI whose subcommands each do load_json() -> mutate -> write_json() on one shared state file has no locking, no compare-and-swap, and no mtime check. That was fine for a decade of single-human use. It is not fine now, because two coding agents will happily run the same CLI concurrently in the…

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