# NousResearch/hermes-agent · Shell-hook wire protocol extra keys documentation

## Open now

- Nothing open on GitHub.

These items concern documenting the per-event \`extra\` object fields in the shell-hook stdin wire protocol, including tool result and subagent child ID contents. One item is a broader docs backlog salvage PR that may include this among other changes.

## TL;DR

- 4 member(s): 0 open issue(s), 1 closed issue(s), 0 open PR(s), 1 merged PR(s), 2 PR(s) closed without merging.
- A fix was merged to main in PR #49944. Verify it addresses your case.
- **Recommended:** read PR #49944 (and any competing PRs below) before filing. Confirm the merged change covers your symptom.

## Maintainer resolution verdict

- Internal-tracker verdict over this cluster's issue members: `unresolved`. This is distinct from the fix status above. Weigh it yourself.

## How this cluster was grouped

- Link evidence (`STRUCTURAL_SPANNING`): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.
- Pairwise link density `0.50`: the share of member pairs that carry a link, counting a structural link in full and a relevance-only link at 0.36. `1.00` means every pair is linked.

## Closed / duplicate issues

- #49370: \[Docs\]: shell-hook stdin \`extra\` object — per-event contents (tool result, subagent child id) not documented

## Prior & competing PRs

- **#49944: docs: salvage 28 validated docs PRs from the older backlog (cluster 2)**. merged to main · fix tier `verified`
  - maintainer direction: category `merged`
  - files: `.env.example`, `AGENTS.md`, `CONTRIBUTING.es.md`, `CONTRIBUTING.md`, `README.es.md`, `README.md`, `SECURITY.es.md`, `agent/agent_init.py`, `agent/shell_hooks.py`, `apps/desktop/README.md`, `cli-config.yaml.example`, `docs/session-lifecycle.md`, `hermes_cli/auth.py`, `hermes_cli/commands.py`, `hermes_cli/setup.py`, `locales/es.yaml`, `optional-skills/autonomous-ai-agents/antigravity-cli/SKILL.md`, `scripts/release.py`, `skills/autonomous-ai-agents/hermes-agent/SKILL.md`, `skills/software-development/hermes-agent-skill-authoring/SKILL.md` (+37 more)
- **#49382: docs(agent): document per-event extra keys in shell-hook wire protocol**. closed without merge
  - maintainer direction: category `duplicate_of`; implication `duplicate`; refs `#49392`
- **#49392: docs: document per-event extra keys in shell-hook wire protocol**. closed without merge
  - maintainer direction: category `merged_via`; implication `superseded`; refs `#49944`

## Fix status

- Merged to main in PR #49944 (cited above). No release data is tracked. Verify downstream.
- Fix last verified (merged) `2026-06-21`.
- Subsystem: `agent`