fix: validate configuration whitespace

ARCHITECTURE.md

@@ -42,8 +42,16 @@ Configuration follows one precedence rule:
 
 `api_key` resolves from `COMETAPI_KEY` and has no default. `base_url` resolves
 from `COMETAPI_BASE_URL` and defaults to
-`https://api.cometapi.com/v1`. Complete credentials must never appear in
-CometAPI-generated exceptions or logs.
+`https://api.cometapi.com/v1`. Direct and environment string values are
+trimmed. An explicitly blank value is rejected without fallback; a blank
+environment key is missing, while a blank environment base URL selects the
+default. Callable keys and `httpx.URL` objects pass through unchanged. Complete
+credentials must never appear in CometAPI-generated exceptions or logs.
+
+The inherited OpenAI `copy` and `with_options` helpers are outside the 0.1
+support contract. They must remain fail-closed for provider routing, workload
+identity, private credential controls, and injected keyword mappings rather
+than weakening the explicit CometAPI constructor boundary.
 
 ## Supported resource boundary
 

CHANGELOG.md

@@ -8,6 +8,9 @@ automation.
 
 ### Fixed
 
+- Reject explicitly blank API keys and base URLs without fallback, treat blank
+  environment keys as missing, and use the default CometAPI URL for a blank
+  `COMETAPI_BASE_URL`.
 - Add a fail-closed immutable-release recovery path with an environment-secret
   preflight before any live request.
 - Execute PyPI Trusted Publishing directly in the single top-level
@@ -17,6 +20,13 @@ automation.
   release chain after a successful selector, while continuing to reject
   cancellation, reruns, and every non-successful direct dependency.
 
+### Changed
+
+- Trim leading and trailing whitespace from direct and environment string API
+  keys and base URLs. Applications that intentionally supplied surrounding
+  whitespace must pass the intended credential or URL without that padding;
+  callable keys and `httpx.URL` objects are unchanged.
+
 ### Documentation
 
 - Record completed stable publication, provenance, digest, and clean-install

COMPATIBILITY.md

@@ -62,9 +62,11 @@ remains upstream-supported.
 
 | Behavior | Contract |
 | --- | --- |
-| API key | Explicit `api_key`, then `COMETAPI_KEY`; required |
-| Base URL | Explicit `base_url`, then `COMETAPI_BASE_URL`, then `https://api.cometapi.com/v1` |
+| API key | Trim explicit/environment strings; explicit blank is invalid, blank `COMETAPI_KEY` is missing; required |
+| Base URL | Trim explicit/environment strings; explicit blank is invalid, blank `COMETAPI_BASE_URL` uses `https://api.cometapi.com/v1` |
+| Callable key and `httpx.URL` | Preserve official deferred-key and URL-object behavior unchanged |
 | OpenAI options | Documented constructor options forwarded unchanged |
+| Inherited copy helpers | Unsupported and fail-closed for provider, workload-identity, and private-option injection |
 | Complete-key disclosure | Forbidden in CometAPI-generated errors and logs |
 
 Applications can configure `openai.OpenAI` or `openai.AsyncOpenAI` directly

README.md

@@ -61,6 +61,12 @@ variable, then the default:
 | `api_key` | `COMETAPI_KEY` | Required |
 | `base_url` | `COMETAPI_BASE_URL` | `https://api.cometapi.com/v1` |
 
+Leading and trailing whitespace is removed from string API keys and base URLs.
+An explicitly blank string is invalid and never falls back to the environment
+or default. A blank `COMETAPI_KEY` is treated as missing, while a blank
+`COMETAPI_BASE_URL` uses the default CometAPI URL. Callable API keys and
+`httpx.URL` values retain their official OpenAI behavior.
+
 ## Usage
 
 ### Chat Completions
@@ -138,7 +144,9 @@ The constructor exposes a named, typed option set: `api_key`, `admin_api_key`,
 that documented custom HTTP client path. OpenAI provider routing and workload
 identity are deliberately excluded because they replace CometAPI routing or
 authentication; private underscore-prefixed OpenAI controls and arbitrary
-keywords are rejected.
+keywords are rejected. Inherited `copy` and `with_options` helpers are not part
+of the supported 0.1 surface and cannot be used to introduce those excluded
+routing or authentication options.
 
 ## Direct OpenAI interoperability
 

ROADMAP.md

@@ -33,6 +33,19 @@ claims remain limited to the evidence defined in this roadmap and
 | `0.3.0` CometAPI resources | Planned | First schema-backed typed CometAPI-specific resource. |
 | Media and task APIs | Planned | Coherent task lifecycle precedes individual media helpers. |
 
+## `0.1.x` maintenance
+
+Stable maintenance preserves the 0.1 public operation and constructor surface.
+String API keys and base URLs are trimmed at their direct or environment
+boundary. Explicit blank values fail without fallback; a blank environment key
+is missing, while a blank environment base URL selects the default CometAPI
+URL. Callable keys and `httpx.URL` values keep their official OpenAI semantics.
+Inherited `copy` and `with_options` helpers remain unsupported and fail-closed
+for provider routing, workload identity, and private-option injection.
+
+No maintenance release activates 0.2 provider adapters or adds a new resource,
+CLI, translation, or Go surface without a separate maintainer request.
+
 ## Repository foundation
 
 Deliverables:

scripts/check_workflows.py

@@ -21,7 +21,7 @@
 RELEASE_PLEASE_LOCK_JSONPATH = "$.package[?(@.name.value == 'cometapi')].version"
 RELEASE_PLEASE_ACTION_SHA = "5c625bfb5d1ff62eadeeb3772007f7f66fdcf071"
 RELEASE_PLEASE_BRIDGE_VERSION = "0.1.0-alpha.1"
-RELEASE_PLEASE_STABLE_VERSION = "0.1.0"
+RELEASE_PLEASE_STABLE_VERSION_PATTERN = re.compile(r"0\.1\.(?:0|[1-9][0-9]*)")
 RELEASE_PLEASE_VERIFY_COMMAND = """\
 test -n "$EXPECTED_TAG"
 test -n "$EXPECTED_SHA"
@@ -953,7 +953,7 @@ def check_release_recovery_workflow(text: str) -> None:
 
 
 def check_release_please_config(text: str, manifest_text: str) -> None:
-    """Require either the reviewed bridge or its exact stable cleanup state."""
+    """Require either the reviewed bridge or a stable 0.1.x cleanup state."""
     try:
         value = cast(object, json.loads(text))
     except json.JSONDecodeError as error:
@@ -966,8 +966,14 @@ def check_release_please_config(text: str, manifest_text: str) -> None:
     manifest = _mapping(manifest_value, "Release Please manifest")
     _require_exact_keys(manifest, {"."}, "Release Please manifest")
     version = manifest["."]
-    if version not in {RELEASE_PLEASE_BRIDGE_VERSION, RELEASE_PLEASE_STABLE_VERSION}:
-        raise CheckError("Release Please manifest must be the reviewed bridge or stable version")
+    stable_version = (
+        isinstance(version, str)
+        and RELEASE_PLEASE_STABLE_VERSION_PATTERN.fullmatch(version) is not None
+    )
+    if version != RELEASE_PLEASE_BRIDGE_VERSION and not stable_version:
+        raise CheckError(
+            "Release Please manifest must be the reviewed bridge or a stable 0.1.x version"
+        )
 
     common_keys = {
         "$schema",
@@ -996,7 +1002,7 @@ def check_release_please_config(text: str, manifest_text: str) -> None:
             )
     else:
         _require_exact_keys(config, common_keys, "Release Please stable config")
-        if version != RELEASE_PLEASE_STABLE_VERSION:
+        if not stable_version:
             raise CheckError("Release Please may remove the one-time bridge only after stable")
     if config["release-type"] != "python":
         raise CheckError("Release Please must retain its Python release type")

src/cometapi/_config.py

@@ -12,19 +12,43 @@
 _T = TypeVar("_T")
 
 
+def _strip_configuration_whitespace(value: str) -> str:
+    start = 0
+    end = len(value)
+    while start < end and (value[start].isspace() or value[start] == "\ufeff"):
+        start += 1
+    while end > start and (value[end - 1].isspace() or value[end - 1] == "\ufeff"):
+        end -= 1
+    return value[start:end]
+
+
 def resolve_api_key(api_key: _T | None) -> _T | str:
     """Resolve an explicit API key before consulting ``COMETAPI_KEY``."""
+    if api_key is not None and not isinstance(api_key, str):
+        return api_key
+
     resolved = api_key if api_key is not None else os.environ.get("COMETAPI_KEY")
-    if resolved is None or (isinstance(resolved, str) and not resolved):
+    normalized = _strip_configuration_whitespace(resolved) if resolved is not None else ""
+    if not normalized:
         raise OpenAIError(
             "The CometAPI API key must be provided with the api_key client option "
             "or the COMETAPI_KEY environment variable."
         )
-    return resolved
+    return normalized
 
 
 def resolve_base_url(base_url: _T | None) -> _T | str:
     """Resolve an explicit base URL before environment and default values."""
     if base_url is not None:
+        if isinstance(base_url, str):
+            normalized = _strip_configuration_whitespace(base_url)
+            if not normalized:
+                raise OpenAIError("The CometAPI base_url client option must not be empty.")
+            return normalized
         return base_url
-    return os.environ.get("COMETAPI_BASE_URL") or DEFAULT_BASE_URL
+
+    environment_url = os.environ.get("COMETAPI_BASE_URL")
+    normalized = (
+        _strip_configuration_whitespace(environment_url) if environment_url is not None else ""
+    )
+    return normalized or DEFAULT_BASE_URL