# NousResearch/hermes-agent · Fix malformed tool_use input in Anthropic agent history

## Open now

- 1 issue, 1 PR open on GitHub.
- #118240: Malformed \`tool_use.input\` (list instead of dict) is not repaired in conversation history, kills the next API call
- PR #118253: fix(agent): coerce non-dict tool_use.input at request-build time so malformed history cannot fail the next Anthropic call

These members address a bug where a tool_use.input field containing a list instead of a dict causes subsequent Anthropic API calls to fail. The proposed fix coerces non-dict tool inputs at request-build time to prevent malformed conversation history from breaking future calls.

## TL;DR

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evidence (`STRUCTURAL_SPANNING`): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.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

## Open related issues

- #118240: Malformed \`tool_use.input\` (list instead of dict) is not repaired in conversation history, kills the next API call

## Prior & competing PRs

- **#118245: fix(agent): repair malformed Anthropic tool inputs**. closed without merge
  - maintainer direction: category `implemented_elsewhere`; implication `superseded`; refs `#118253`, `#118240`
- **#118253: fix(agent): coerce non-dict tool_use.input at request-build time so malformed history cannot fail the next Anthropic call**. open
  - maintainer direction: category `silent_close`; implication `active`
  - files: `agent/anthropic_message_convert.py`, `tests/agent/test_anthropic_tool_use_input_coercion.py`

## Fix status

- No merged fix on record.
- Subsystem: `agent`