# NousResearch/hermes-agent · Fixes for dropped tool results due to ID mismatches

## Open now

- Nothing open on GitHub.

These issues and fixes address a bug where tool results are silently dropped when tool call IDs have composite or variant formats (e.g., 'call_xxx|fc_yyy'), causing the model to never receive tool output. The work focuses on normalizing and correctly pairing tool call IDs across multiple matching sites in the agent pipeline.

## TL;DR

- 5 member(s): 0 open issue(s), 1 closed issue(s), 0 open PR(s), 2 merged PR(s), 2 PR(s) closed without merging.
- A fix was merged to main in PR #93329. Verify it addresses your case.
- **Recommended:** read PR #93329 (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: `resolved` · deciding PR(s): `pr-93329`. 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evidence (`STRUCTURAL_SPANNING`): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.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 `0.40`: 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

- #63000: Tool results silently dropped when provider returns composite tool_call ids (call_xxx|fc_yyy) — model never sees output and confabulates

## Prior & competing PRs

- **#93329: fix(agent): tool results survive divergent id/call_id variants at all four pairing sites (#93251, salvages #56148 #58287 #66974 #91768)**. merged to main · fix tier `verified`
  - maintainer direction: category `merged`; implication `superseded`
  - files: `agent/agent_runtime_helpers.py`, `agent/context_compressor.py`, `tests/agent/test_context_compressor.py`, `tests/run_agent/test_message_sequence_repair.py`, `tests/run_agent/test_run_agent.py`
- **#93401: fix(agent): composite and response_item_id spellings pair correctly; results born on canonical ids (#63000, salvage #93335)**. merged to main · fix tier `verified`
  - maintainer direction: category `merged`; implication `superseded`
  - files: `agent/agent_runtime_helpers.py`, `agent/context_compressor.py`, `agent/conversation_loop.py`, `agent/message_sanitization.py`, `agent/tool_dispatch_helpers.py`, `agent/tool_executor.py`, `tests/agent/test_tool_dispatch_helpers.py`, `tests/run_agent/test_message_sequence_repair.py`
- **#63005: fix(agent): normalize composite tool_call ids to prevent silent tool result drops**. closed without merge
  - maintainer direction: category `uncategorized`; implication `needs_llm`; refs `a2a43f7e82`, `#63000`, `#93401`, `#93329`, `#93401`
- **#93335: fix(agent): preserve parallel tool results across ID variants**. closed without merge
  - maintainer direction: category `merged_via`; implication `superseded`; refs `a2a43f7e82`, `#93401`, `#93329`, `#79278`, `#91768`, `#63000`, `#93329`

## Fix status

- Merged to main in PR #93329 (cited above). No release data is tracked. Verify downstream.
- Fix last verified (merged) `2026-08-24`.
- Subsystem: `agent`