Cairn
NousResearch/hermes-agent

Memory replace truncation and silent data loss fixes

Cluster 117952. Data as of

Nothing open on GitHub. Fix merged in #117988 on 21 Sep 2026. Check it covers your case.

The short answer

0open issues
0open PRs
4items grouped
Known?
Yes. 4 related items grouped here, 1 issue already closed.
Fix event
A fix was merged to main in PR #117988. Check it covers your case. No release data is tracked.
Tracker
The maintainers' tracker marks this resolved, deciding PR #117988. That is separate from the fix event.
Still open
Nothing open on GitHub.

These items concern a bug where a partial-entry memory replace operation silently overwrites or truncates the entire entry. The cluster covers the bug report and multiple related fix attempts addressing the behavior and its failure mode.

Open issues0

No open issues.

Open PRs0

No open pull requests.

Fixes on record

Merged to main. A stamp counts the issues a fix is linked to.

  • #117988 fix(memory): replace states and surfaces the whole-entry contract — no more silent truncation (#117952, salvage #109177)

    merged to main

    files: contributors/emails/[redacted:email], hermes_cli/write_approval_commands.py, tests/tools/test_memory_tool.py, tests/tools/test_write_approval.py, tools/memory_tool.py, tools/memory_tool_store.py, website/docs/user-guide/features/memory.md

2 PRs closed without merging

From the close comments: partial fix 1 · superseded by another PR 1

  • #117965 fix(memory): a partial-entry replace overwrites the whole entry — silent data loss · superseded by another PR → 05b9bac, #117988, #117952, #59184
  • #117972 fix(memory): fail closed when approving a replace anchored inside an entry · partial fix → 67208ca, 05b9bac, 3275de3, #117952, #109177
Closed issues · 1
  • Closed#117952[Bug]: write-approval apply of a partial-entry memory replace truncates the whole entry — silent data loss
How this cluster was grouped
  • Link evidence (structural links throughout): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.
  • Pairwise link density 0.50: the share of item 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.

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At a glance

Merged PRs
#117988
Closed issues
1
Attempts
2 PRs closed without merging
Fix link checked
21 Sep 2026

For your agent

The same facts, typed.

cluster/117952.json
cluster/117952.md