# NousResearch/hermes-agent · MCP uncacheable media blocks notify model instead of vanishing

## Open now

- 1 issue, 1 PR open on GitHub.
- #120227: \[Bug\]: An MCP image the cache cannot store (SVG, AVIF, TIFF, HEIC, malformed base64) vanishes from the tool result with no notice to the model
- PR #120228: fix(mcp): an image or audio block Hermes cannot cache tells the model instead of vanishing

A bug was identified where image or audio blocks that cannot be cached (e.g., SVG, AVIF, TIFF, HEIC, malformed base64) silently disappear from tool results. Related fixes aim to surface an inline notice to the model rather than dropping the block without explanation.

## TL;DR

- 3 member(s): 1 open issue(s), 0 closed issue(s), 1 open PR(s), 0 merged PR(s), 1 PR(s) closed without merging.
- No fix has been merged to main; one or more PRs were attempted (see below).
- **Recommended:** review the prior/competing PR(s) below. A fix was attempted but not merged; your case may extend or revive that work.

## 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evidence (`STRUCTURAL_SPANNING`): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.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 `0.67`: 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.

## Open related issues

- #120227: \[Bug\]: An MCP image the cache cannot store (SVG, AVIF, TIFF, HEIC, malformed base64) vanishes from the tool result with no notice to the model

## Prior & competing PRs

- **#120228: fix(mcp): an image or audio block Hermes cannot cache tells the model instead of vanishing**. open
  - maintainer direction: category `silent_close`; implication `active`
  - files: `tests/tools/test_mcp_image_content.py`, `tools/mcp_tool_content.py`
- **#120243: fix(mcp): surface inline notice when image/audio block cannot be cached**. closed without merge
  - maintainer direction: category `duplicate_of`; implication `duplicate`; refs `#120228`

## Fix status

- No merged fix on record.
- Subsystem: `mcp`