# NousResearch/hermes-agent · config set scalar overwrites mapping sections bug

## Open now

- Nothing open on GitHub.

A bug where setting a scalar value via config set silently destroys entire mapping sections (such as model, terminal, or gateway), leaving the config in a broken state. The members cover the bug report and related fix attempts guarding against this overwrite.

## TL;DR

- 5 member(s): 0 open issue(s), 1 closed issue(s), 0 open PR(s), 1 merged PR(s), 3 PR(s) closed without merging.
- A fix was merged to main in PR #75867. Verify it addresses your case.
- **Recommended:** read PR #75867 (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evidence (`STRUCTURAL_SPANNING`): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.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 `0.40`: 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

- #74995: hermes config set <section> <value> silently destroys the whole mapping (model/terminal/gateway), reports success, and leaves model: as a bare string the loader can't repair

## Prior & competing PRs

- **#75867: fix(config): guard against scalar overwrite of mapping sections (#74995)**. merged to main · fix tier `verified`
  - maintainer direction: category `merged`; implication `superseded`
  - files: `hermes_cli/config.py`, `tests/hermes_cli/test_set_config_value.py`
- **#71387: fix(cli): guard config set against overwriting dict sections with scalars**. closed without merge
  - maintainer direction: category `implemented_elsewhere`; implication `superseded`; refs `#75867`, `#75409`, `#75867`
- **#75002: fix(cli): refuse to overwrite mapping sections with scalar in config set (#74995)**. closed without merge
  - maintainer direction: category `implemented_elsewhere`; implication `superseded`; refs `#74995`, `#75409`, `#71387`
- **#75409: fix(config): guard against scalar overwrite of mapping sections (#74995)**. closed without merge
  - maintainer direction: category `merged_via`; implication `superseded`; refs `#75867`

## Fix status

- Merged to main in PR #75867 (cited above). No release data is tracked. Verify downstream.
- Fix last verified (merged) `2026-08-01`.
- Subsystem: `hermes_cli`