Cairn
NousResearch/hermes-agent

Tool-call parsing issues with nested JSON and inline XML

Cluster 22688 · acp. Data as of

2 open items. Fix attempted, not merged.

The short answer

1open issue
1open PR
4items grouped
Known?
Yes. 4 related items grouped here, 1 issue already closed.
Fix event
No fix has been merged to main. 1 PR closed without merging; see the attempts below.
Tracker
The maintainers' tracker marks this unresolved. That is separate from the fix event.
Still open
1 issue and 1 PR.

Most members concern how tool_use/tool_call blocks are extracted from model output, with reports of regex-based parsing mishandling nested JSON or closing tags inside JSON strings. One member proposes a brace-depth scanner, and another covers recovering inline XML tool calls from chat-completion content, which is adjacent but may be a distinct case.

Open issues1

  • Issue#22696BUG: tool_use parser fails intermittently when closing tag appears inside JSON strings

Open PRs1

  • PR#23888fix(agent): replace fragile tool_call regex with brace-depth scanner for nested JSON

1 PR closed without merging

From the close comments: other 1

  • #23508 Recover inline XML tool calls from chat-completion content · other → #22696, #23888
Closed issues · 1
  • Closed#22688Bug: tool_use regex parser fails with nested JSON — blocks pass through as raw text
How this cluster was grouped
  • Link evidence (partly structural links): some members are connected by structural evidence (shared changed files, or a closing/superseded reference); the rest are joined by an automated relevance judgement over their text.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 0.39: 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

Subsystem
acp
Closed issues
1
Attempts
1 PR closed without merging

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