NousResearch/hermes-agent

Inverted boolean bug in stdio MCP liveness check

Cluster 95270. Data as of

Nothing open on GitHub. Fix merged in #94339 on 27 Aug 2026. Check it covers your case.

The short answer

0open issues
0open PRs
3items grouped
Known?
Yes. 3 related items grouped here, 1 issue already closed.
Fix event
A fix was merged to main in PR #94339. Check it covers your case. No release data is tracked.
Tracker
The maintainers' tracker marks this unresolved. That is separate from the fix event.
Still open
Nothing open on GitHub.

A bug was identified where _stdio_children_dead() returned an inverted boolean, causing stdio MCP tools to incorrectly report child processes as dead. The members include the bug report and two fixes addressing this inversion.

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.

  • #94339 fix(mcp): un-invert the stdio children liveness check

    merged to main

    files: tests/tools/test_mcp_stdio_children_dead.py, tools/mcp_tool.py

1 PR closed without merging

From the close comments: done elsewhere 1

  • #95272 fix(mcp): correct inverted return value in _stdio_children_dead · done elsewhere → #94339
Closed issues · 1
  • Closed#95270Bug: _stdio_children_dead() returns inverted result — all stdio MCP tools fail-fast falsely
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(structural links throughout): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.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 0.67: 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
#94339
Closed issues
1
Attempts
1 PR closed without merging
Fix link checked
27 Aug 2026

For your agent

The same facts, typed.