The new resolve_xai_http_credentials() resolver was using os.getenv()
for the XAI_API_KEY/XAI_BASE_URL fallback path, which dropped the
~/.hermes/.env contract guarded by PR #17140 / #17163. Users with
XAI_API_KEY in dotenv only would see "No xAI credentials found" even
though the key was configured.
Separately, _transcribe_xai started consulting creds["base_url"] (which
always returns at least the default https://api.x.ai/v1) ahead of the
public XAI_STT_BASE_URL env override, so the per-tool override stopped
working.
- tools/xai_http.py: add module-level get_env_value() wrapper that
reads ~/.hermes/.env first (via hermes_cli.config.get_env_value),
then os.environ. Resolver uses it for the API-key/base-url fallback.
- tools/transcription_tools.py: restore precedence so XAI_STT_BASE_URL
wins over creds["base_url"].
- tests/tools/test_transcription_dotenv_fallback.py +
tests/tools/test_tts_dotenv_fallback.py: repoint the per-call-site
patches at the new resolution point (tools.xai_http.get_env_value).
The end-to-end regression-guard test (which patches load_env) is
unchanged and still passes.
Wrap the new top-level `from hermes_cli.config import get_env_value`
in try/except ImportError and fall back to a thin os.getenv shim, so
importing tools.tts_tool keeps working in environments where
hermes_cli.config is unavailable. This matches the existing tolerance
in `_load_tts_config()` (tools/tts_tool.py) and the same
import-fallback pattern in tools/tool_backend_helpers.py::fal_key_is_configured.
Also update the TestDotenvFallbackPerProvider docstring to accurately
describe the mocking strategy: per-provider tests patch
`tools.tts_tool.get_env_value` directly, while the regression-guard
tests cover the lower-level `hermes_cli.config.load_env` integration.
Addresses Copilot review on #17163.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
TTS provider tools (elevenlabs, xai, minimax, mistral, gemini) called
os.getenv("X_API_KEY") directly, which bypassed Hermes's dotenv bridge in
hermes_cli.config. Users who keep their TTS keys only in ~/.hermes/.env saw
"X_API_KEY not set" errors even though the rest of the stack
(agent/credential_pool, hermes_cli/auth) already resolves keys through
get_env_value() — same class of bug as #15914 fixed for those modules.
Switch every TTS env-var lookup (API keys, base URLs, and
check_tts_requirements gates) to get_env_value, which checks os.environ
first and then ~/.hermes/.env. Behaviour for users with keys exported in
the shell is unchanged; users with dotenv-only keys now succeed. The two
diagnostics prints in __main__ are migrated for consistency.
Regression test (tests/tools/test_tts_dotenv_fallback.py):
- per-provider: each backend reads the dotenv key when only
~/.hermes/.env carries it (5 providers).
- end-to-end: with hermes_cli.config.load_env returning the key and
os.environ empty, _generate_minimax_tts and check_tts_requirements
both succeed; reverting tools/tts_tool.py back to os.getenv makes all
7 tests fail with "MINIMAX_API_KEY not set" / similar.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
