# NousResearch/hermes-agent · Anthropic preserved thinking replay bug fixes

## Open now

- Nothing open on GitHub.

These items address a bug where signed thinking blocks from prior assistant turns are stripped during replay, breaking reasoning chain continuity and prompt-cache prefix stability on newer Anthropic models. The cluster includes the bug report and two related fix attempts targeting coherence of the replay behavior.

## TL;DR

- 3 member(s): 0 open issue(s), 1 closed issue(s), 0 open PR(s), 0 merged PR(s), 2 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evidence (`STRUCTURAL_SPANNING`): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.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.

## Closed / duplicate issues

- #129476: \[Bug\]: Anthropic prior-turn signed thinking blocks are stripped on replay (preserved thinking), losing the reasoning chain and breaking prompt-cache prefix stability on Opus 4.6+/5.x

## Prior & competing PRs

- **#129492: fix(anthropic): replay signed thinking on every assistant turn (preserved thinking)**. closed without merge
  - maintainer direction: category `superseded_by_pr`; implication `superseded`; refs `5d077106b89aa9f8d3bffa39d22a8533ba88306b`
- **#129620: fix(anthropic): make preserved-thinking replay coherent**. closed without merge
  - maintainer direction: category `implemented_elsewhere`; implication `superseded`; refs `588b746cf6a092a974629aec44dcb8077107307b`, `91145e5f409f1ac66ed565a9ca681c0a65a7a889`, `c19252d41259941a0eedd800df2006795d0edd25`, `a3b56cac95488242856b6fb1f121842a38c3e391`, `6b64d451ad67734a01f8699eb5c5490f07488058`, `bc9511af3f92ee22fbcaccd77733d7d048ee5fa6`, `7df230b4c3670ea6a7b53461b21b01fe6552fc28`, `66987608bcb897156510ad0ada9ea09643637bd0`, `e78c9f63736843672077fcb8d384c8a1cf330f97`, `28529b99e15bb39fe274f3e8a97b705f121c272c`, `f2ad2236628811ff682397362dc9741fd0571eee`, `#129476`, `#172554`, `#129492`, `#106426`, `#103476`, `#129882`, `#70107`, `#83331`

## Fix status

- No merged fix on record.