# NousResearch/hermes-agent · Responses API history duplication and compression bugs

## Open now

- Nothing open on GitHub.

These issues and fixes center on the /v1/responses endpoint experiencing conversation history duplication and repeated compression loops when context exceeds model limits. Multiple related problems are addressed: compressed transcripts not being persisted correctly, history growing exponentially, and post-compression state not being properly stored or advanced.

## TL;DR

- 12 member(s): 0 open issue(s), 3 closed issue(s), 0 open PR(s), 2 merged PR(s), 7 PR(s) closed without merging.
- A fix was merged to main in PR #69306. Verify it addresses your case.
- **Recommended:** read PR #69306 (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: `partially_resolved` · deciding PR(s): `pr-69306`. This is distinct from the fix status above. Weigh it yourself.

## How this cluster was grouped

- Link evidence (`STRUCTURAL_PARTIAL`): some members are connected by structural evidence (shared changed files, or a closing/superseded reference); the rest are joined by an automated relevance judgement over their text.
- Members outside that structural core may belong to a different underlying problem.
- Pairwise link density `0.16`: 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

- #56895: \`/v1/responses\` enters repeated compression loop after context exceeds model limit
- #58081: \[Bug\] Responses API: compressed transcript not stored in ResponseStore, causing re-compression loop
- #68257: Exponential conversation history doubling in Responses API (_build_response_conversation_history)

## Prior & competing PRs

- **#69306: fix(api): persist compressed transcripts in ResponseStore to stop re-compression loops**. merged to main · fix tier `verified`
  - maintainer direction: category `merged`; implication `superseded`
  - files: `contributors/emails/[redacted:email]`, `contributors/emails/[redacted:email]`, `gateway/platforms/api_server.py`, `tests/gateway/test_api_server.py`
- **#116326: Chained /v1/responses turns no longer replay earlier tool calls or double the stored history after history repair/compaction (#89891, rebuild of #70695)**. merged to main · fix tier `verified`
  - maintainer direction: category `merged`; implication `superseded`
  - files: `gateway/platforms/api_server_openai_routes.py`, `gateway/platforms/api_server_turn_boundary.py`, `tests/gateway/test_api_server_responses_history_dedupe.py`, `tests/gateway/test_api_server_turn_boundary.py`, `website/docs/user-guide/features/api-server.md`
- **#56933: fix(api): advance responses chain after compression**. closed without merge
  - maintainer direction: category `implemented_elsewhere`; implication `superseded`; refs `d12d8b3a4`
- **#56996: fix(api): persist compressed responses history**. closed without merge
  - maintainer direction: category `duplicate_of`; implication `duplicate`; refs `#56933`, `#56895`, `#56933`
- **#58133: fix(gateway): Responses API stores bloated context after compression**. closed without merge
  - maintainer direction: category `merged_via`; implication `superseded`; refs `1c21e96ed`, `#69306`
- **#66148: fix(gateway): prune stored /v1/responses history images and stop post-compression history duplication**. closed without merge
  - maintainer direction: category `partial_fix`; implication `needs_llm`; refs `1c21e96ed`, `c7502a5fe2cb`, `#56895`, `#56933`, `#56996`, `#69306`, `#66148`, `#56933`, `#69306`, `#56996`, `#56933`, `#69306`, `#66148`, `#69306`, `#69306`, `#56895`, `#56933`, `#56996`, `#66148`, `#69306`, `#66148`, `#69306`, `#66148`, `#69306`, `#56933`, `#56996`, `#69306`, `#1`, `#1`, `#15803`, `#14532`, `#6`, `#1`, `#9`, `#374151`, `#4338`, `#56895`, `#66148`
- **#68282: fix(api): keep Responses history system-free 🩷**. closed without merge
  - maintainer direction: category `partial_fix`; implication `needs_llm`; refs `d1ea8387ba94`, `#68257`, `#68282`, `#70695`, `#75289`, `#68282`, `#70695`, `#75289`, `#68282`, `#70695`, `#75289`, `#75289`, `#68282`, `#70695`, `#75289`, `#1`, `#1`, `#15803`, `#14532`, `#6`, `#1`, `#9`, `#374151`, `#4338`, `#68257`, `#68282`, `#70695`
- **#70695: fix(api_server): robust Responses turn-start detection**. closed without merge
  - maintainer direction: category `implemented_elsewhere`; implication `superseded`; refs `60e166cbf5`, `#116326`
- **#75289: fix(api_server): trust full transcripts via _transcript_mode to stop repair-induced duplication**. closed without merge
  - maintainer direction: category `implemented_elsewhere`; implication `superseded`; refs `60e166cbf5`, `#116326`

## Fix status

- Merged to main in PR #69306 (cited above). No release data is tracked. Verify downstream.
- Fix last verified (merged) `2026-09-19`.
- Subsystem: `agent`