# NousResearch/hermes-agent · Copilot BYOK two-slash model ID truncation bug

## Open now

- Nothing open on GitHub.

A bug where Copilot custom/enterprise BYOK model IDs containing two slashes were being truncated before requests, causing HTTP 400 errors. Multiple fix attempts address passing these IDs through unchanged.

## TL;DR

- 3 member(s): 0 open issue(s), 1 closed issue(s), 0 open PR(s), 1 merged PR(s), 1 PR(s) closed without merging.
- A fix was merged to main in PR #111440. Verify it addresses your case.
- **Recommended:** read PR #111440 (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-111440`. 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evidence (`STRUCTURAL_SPANNING`): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.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.

## Closed / duplicate issues

- #110597: \[Bug\]: Copilot custom/enterprise (BYOK) model ids with two slashes are truncated before the request, causing HTTP 400 model_not_supported

## Prior & competing PRs

- **#111440: fix(copilot): two-slash enterprise BYOK model ids are no longer truncated before the request (#110597, salvage #110598)**. merged to main · fix tier `verified`
  - maintainer direction: category `merged`
  - files: `contributors/emails/[redacted:email]`, `hermes_cli/models.py`, `tests/hermes_cli/test_copilot_custom_model_ids.py`
- **#110598: fix(copilot): pass two-slash custom-model ids through unchanged**. closed without merge
  - maintainer direction: category `uncategorized`; implication `needs_llm`; refs `#111440`

## Fix status

- Merged to main in PR #111440 (cited above). No release data is tracked. Verify downstream.
- Fix last verified (merged) `2026-09-15`.