Cairn
NousResearch/hermes-agent

MCP uncacheable media blocks notify model instead of vanishing

Cluster 120227 · mcp. Data as of

2 open items. Fix attempted, not merged.

The short answer

1open issue
1open PR
3items grouped
Known?
Yes. 3 related items grouped here, 0 issues already closed.
Fix event
No fix has been merged to main. 1 PR closed without merging; see the attempts below.
Tracker
The maintainers' tracker marks this unresolved. That is separate from the fix event.
Still open
1 issue and 1 PR.

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.

Open issues1

  • Issue#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

Open PRs1

  • PR#120228fix(mcp): an image or audio block Hermes cannot cache tells the model instead of vanishing

1 PR closed without merging

From the close comments: duplicate 1

  • #120243 fix(mcp): surface inline notice when image/audio block cannot be cached · duplicate → #120228
How this cluster was grouped
  • Link evidence (structural links throughout): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.
  • Pairwise link density 0.67: the share of item 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.

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At a glance

Subsystem
mcp
Closed issues
0
Attempts
1 PR closed without merging

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