Evidence record / hermes-agent
A dated record of one change, kept so the writing that cites it can be checked. Compiled from the sources listed below by the research run, not written for reading. The judgment lives in the issues that cite it, below.
2026-08-17-hermes-agent-delegated-subagents-can-each-get-their-own-git
Delegated subagents can each get their own git worktree.
delegation.worktree_isolation: true (default false) gives each delegated child a worktree at <repo>/.worktrees/subagent-<id> on branch hermes-subagent/subagent-<id>, branched from HEAD, so parallel children stop contending for one working copy and the parent's checkout stays untouched. Children commit in their own worktree and the lead reviews and merges each branch. Worktrees with no commits and a clean tree are auto-pruned; anything holding work is kept. Scope guards are tight: git repos and the local terminal backend only -- non-git dirs, docker/ssh/modal backends, unborn HEAD or any git failure fall back silently to today's shared workspace rather than erroring. Result entries gain a worktree field only when isolation engaged, so the default-off wire shape is byte-identical. The PR documents it as a clean-room implementation from Meta Muse Code's published behaviour (dev.meta.ai docs), with no code referenced.
Channel: tagged-release. Ancestry: merge_commit_sha 6ee58f4088e70798b51e001ab79adaec3b34fa4a; compare/6ee58f40...v2026.8.13 -> status=ahead, ahead_by=274, behind_by=0 (ancestor of stable tag v2026.8.13).
Operator consequence: Turn it on if you fan out edit-capable children across one repo -- this is the difference between parallel subagents and parallel corruption. Note the silent degradation: on a docker or SSH backend you get shared-workspace behaviour with no error and no worktree field, so verify the field is present before you assume isolation held.
Receipt
Finding metadata
Run: 2026-08-17-weekly-digest-2026-08-10_2026-08-17-frontier-v0
Finding ID: 2026-08-17-hermes-agent-delegated-subagents-can-each-get-their-own-git
Source links
Primary links, including exact changelog lines when available.
Versioned source: run artifact