# NousResearch/hermes-agent · Fix tool-call JSON canonicalization in max-iteration summaries

## Open now

- Nothing open on GitHub.

These issues and PRs address a bug where max-iteration summary messages skip tool-call JSON canonicalization, causing prefix cache misses and expensive token re-prefills. The fixes align summary message normalization with the standard send path.

## 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 #124157. Verify it addresses your case.
- **Recommended:** read PR #124157 (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evidence (`STRUCTURAL_SPANNING`): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.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

- #123002: Max-iteration summary skips tool-call canonicalization, so local prefix caches miss the whole prompt (555k-token re-prefill)

## Prior & competing PRs

- **#124157: fix(agent): normalize max-iteration summary messages like the send path**. merged to main · fix tier `verified`
  - maintainer direction: category `merged`
  - files: `agent/chat_completion_helpers.py`, `contributors/emails/[redacted:email]`, `contributors/emails/[redacted:email]`, `tests/agent/test_iteration_summary_reasoning_details.py`
- **#123004: fix(agent): canonicalize the max-iteration summary's tool-call JSON**. closed without merge
  - maintainer direction: category `superseded_by_pr`; implication `superseded`; refs `#124157`
- **#123014: fix(agent): canonicalize tool-call JSON and strip content in max-iteration summary messages**. closed without merge
  - maintainer direction: category `superseded_by_pr`; implication `superseded`; refs `#124157`

## Fix status

- Merged to main in PR #124157 (cited above). No release data is tracked. Verify downstream.
- Fix last verified (merged) `2026-09-26`.