# NousResearch/hermes-agent · tail message floor token budget overflow fixes

## Open now

- 0 issues, 1 PR open on GitHub.
- PR #60662: feat(compression): configurable max_tail_message_floor

Multiple fixes and a feature addressing a bug where the tail message floor in context compression could exceed the configured token budget without an upper bound. Changes include bounding the floor, adding configurability, and preventing it from overriding lean token limits.

## TL;DR

- 8 member(s): 0 open issue(s), 1 closed issue(s), 1 open PR(s), 1 merged PR(s), 5 PR(s) closed without merging.
- A fix was merged to main in PR #115987. Verify it addresses your case.
- **Recommended:** read PR #115987 (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-115987`. 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evidence (`STRUCTURAL_SPANNING`): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.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 `0.25`: 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

- #108647: \[Bug\]: Tail message floor overrides the lean token budget with no upper bound (6.3x observed)

## Prior & competing PRs

- **#115987: fix(compression): the recent-message floor no longer pushes the protected tail past its token ceiling (#108647, salvage #108651)**. merged to main · fix tier `verified`
  - maintainer direction: category `merged`
  - files: `agent/context_compressor.py`, `tests/agent/test_context_compressor.py`
- **#60662: feat(compression): configurable max_tail_message_floor**. open
  - maintainer direction: category `implemented_elsewhere`; implication `superseded`; refs `f817897645`, `7e50a1e8d3`, `7125f3db42`
  - files: `agent/agent_init.py`, `agent/context_compressor.py`, `gateway/run.py`, `hermes_cli/config_defaults.py`, `tests/agent/test_compress_focus.py`, `tests/agent/test_compressor_image_tokens.py`, `tests/agent/test_context_compressor.py`, `tests/agent/test_context_compressor_cross_session_guard.py`, `tests/agent/test_context_compressor_session_end_clears_state.py`, `tests/agent/test_protected_tail_pressure.py`, `tests/agent/test_session_reset_fix.py`, `tests/agent/test_tail_floor_config_load_path.py`, `tests/gateway/test_agent_cache.py`, `tests/tools/test_computer_use.py`, `website/docs/developer-guide/context-compression-and-caching.md`, `website/docs/user-guide/configuration.md`
- **#108651: fix(agent): bound tail message floor by token budget**. closed without merge
  - maintainer direction: category `merged_via`; implication `superseded`; refs `#115987`
- **#108824: fix(compression): bound tail message floor by token budget**. closed without merge
  - maintainer direction: category `merged_via`; implication `superseded`; refs `#108651`, `#115987`
- **#109523: fix(compression): bound tail message floor by lean token budget (#108647)**. closed without merge
  - maintainer direction: category `duplicate_of`; implication `duplicate`; refs `#108651`, `#108647`, `#108824`
- **#113028: fix(compression): bound oversized protected tails**. closed without merge
  - maintainer direction: category `duplicate_of`; implication `duplicate`
- **#127330: fix(context-compressor): prevent tail message floor from overriding token budget**. closed without merge
  - maintainer direction: category `implemented_elsewhere`; implication `superseded`; refs `fdbcdef914`, `31447bda5e`, `#108647`

## Fix status

- Merged to main in PR #115987 (cited above). No release data is tracked. Verify downstream.
- Fix last verified (merged) `2026-09-19`.
- Subsystem: `agent`