# NousResearch/hermes-agent · Streaming data loss at segment or tool boundaries

## Open now

- Nothing open on GitHub.

These issues and fixes address silent dropping or truncation of streamed text when segment resets or tool boundaries occur, particularly during fallback mode. Proposed mitigations include flushing undelivered tail content and adaptive backoff with cursor stripping.

## 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 #12414. Verify it addresses your case.
- **Recommended:** read PR #12414 (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evidence (`STRUCTURAL_SPANNING`): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.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

- #8124: \[Bug\]: Streaming text silently dropped when tool boundary arrives during fallback mode

## Prior & competing PRs

- **#12414: fix(gateway): flush undelivered tail before segment reset (#8124)**. merged to main · fix tier `verified`
  - maintainer direction: category `merged`
  - files: `gateway/stream_consumer.py`, `tests/gateway/test_stream_consumer.py`
- **#8417: fix(gateway): flush fallback text before segment reset to prevent silent data loss**. closed without merge
  - maintainer direction: category `superseded_by_pr`; implication `superseded`; refs `#12414`, `#11974`, `#8124`
- **#11974: fix(gateway): flush undelivered tail before segment reset (#8124)**. closed without merge
  - maintainer direction: category `merged_via`; implication `superseded`; refs `#12414`

## Fix status

- Merged to main in PR #12414 (cited above). No release data is tracked. Verify downstream.
- Fix last verified (merged) `2026-04-19`. This confirmation is old and may be out of date (a revert/reopen would not have invalidated it here); re-verify.