# NousResearch/hermes-agent · Normalize httpx.URL base_url in Anthropic adapter

## Open now

- Nothing open on GitHub.

A cluster of fixes addressing how the Anthropic adapter handles base_url values that may be httpx.URL objects rather than plain strings, including normalization, stripping, and fallback behavior for third-party endpoints.

## TL;DR

- 4 member(s): 0 open issue(s), 1 closed issue(s), 0 open PR(s), 1 merged PR(s), 2 PR(s) closed without merging.
- A fix was merged to main in PR #6289. Verify it addresses your case.
- **Recommended:** read PR #6289 (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-6289`. 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evidence (`STRUCTURAL_SPANNING`): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.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 `0.50`: 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

- #4944: fix fallback activation when provider client base_url is an httpx.URL

## Prior & competing PRs

- **#6289: fix: normalize httpx.URL base_url + strip thinking signatures for third-party endpoints**. merged to main · fix tier `verified`
  - maintainer direction: category `merged`
  - files: `agent/anthropic_adapter.py`, `run_agent.py`
- **#4945: fix: normalize fallback anthropic base URLs**. closed without merge
  - maintainer direction: category `merged_via`; implication `superseded`; refs `#6289`
- **#4968: fix: normalize base_url to str before rstrip in anthropic adapter**. closed without merge
  - maintainer direction: category `superseded_by_pr`; implication `superseded`; refs `#6289`

## Fix status

- Merged to main in PR #6289 (cited above). No release data is tracked. Verify downstream.
- Fix last verified (merged) `2026-04-08`. This confirmation is old and may be out of date (a revert/reopen would not have invalidated it here); re-verify.
- Subsystem: `agent`