# NousResearch/hermes-agent · Vision routing: prefer modalities.input over attachment flag

## Open now

- Nothing open on GitHub.

These issues and PRs address a routing logic problem where the attachment flag incorrectly takes precedence over modalities.input for determining vision/image capability. A specific case involves mimo-v2.5-pro being wrongly marked as attachment:true despite being text-only.

## 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 #21246. Verify it addresses your case.
- **Recommended:** read PR #21246 (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: `resolved` · deciding PR(s): `pr-21246`. 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evidence (`STRUCTURAL_SPANNING`): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.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

- #18884: \[models.dev\] mimo-v2.5-pro incorrectly marked as attachment:true — mimo-2.5-pro is text-only, mimo-2.5 is the omnimodal model

## Prior & competing PRs

- **#21246: fix(models): prefer modalities.input for vision routing (salvage #19190)**. merged to main · fix tier `verified`
  - maintainer direction: category `merged`
  - files: `agent/models_dev.py`, `tests/agent/test_image_routing.py`, `tests/agent/test_models_dev.py`
- **#18889: fix(models-dev): let modalities.input take precedence over attachment flag**. closed without merge
  - maintainer direction: category `implemented_elsewhere`; implication `superseded`; refs `14f38822fa56a740899afa1d0b1f2df8c90cb422`, `#19190`, `#18884`
- **#19190: fix(models): prefer image modalities for vision routing**. closed without merge
  - maintainer direction: category `duplicate_of`; implication `duplicate`; refs `#18889`, `#18884`

## Fix status

- Merged to main in PR #21246 (cited above). No release data is tracked. Verify downstream.
- Fix last verified (merged) `2026-05-07`.
- Subsystem: `agent`