feat(providers): add Atlas Cloud as an OpenAI-compatible provider

coworker/providers/registry.py

@@ -1589,6 +1589,25 @@ def verify_provider_key(
                     },
                     timeout=timeout,
                 )
+        elif name == "atlascloud":
+            # Atlas Cloud's /models is public (a bad key still answers 200) and its
+            # /chat/completions has no GET route (a valid key gets 404 there), so the
+            # generic probe would reject a good key with the "missing /v1" message.
+            # Send a non-persisted one-token completion instead, like Ark below.
+            default_base = next(
+                (f.default for f in d.fields if f.key == "base_url" and f.default), ""
+            )
+            base = (base_url or "").strip().rstrip("/") or default_base.rstrip("/")
+            resp = httpx.post(
+                base + "/chat/completions",
+                headers={"Authorization": f"Bearer {key}"},
+                json={
+                    "model": d.recommended_model,
+                    "messages": [{"role": "user", "content": "Reply with OK."}],
+                    "max_tokens": 1,
+                },
+                timeout=timeout,
+            )
         elif name in ("ark", "ark-agent-plan-cn"):
             default_base = next(
                 (f.default for f in d.fields if f.key == "base_url" and f.default), ""

tests/test_provider_verify.py

@@ -260,6 +260,25 @@ def test_verify_nvidia_self_hosted_rejected_key_is_invalid(monkeypatch):
     ) == {"ok": False, "error": "Invalid API key."}
 
 
+def test_verify_atlascloud_uses_one_token_completion_probe(monkeypatch):
+    """Atlas Cloud's /models is public and its /chat/completions has no GET route, so the
+    default probes would reject a good key (404 -> "missing /v1")."""
+    cap: dict = {}
+    _patch_post(monkeypatch, status=200, capture=cap)
+
+    assert verify_provider_key("atlascloud", api_key="ac-key") == {"ok": True}
+    assert cap["url"] == "https://api.atlascloud.ai/v1/chat/completions"
+    assert cap["headers"]["Authorization"] == "Bearer ac-key"
+    assert cap["json"]["model"] == "zai-org/glm-5.2"
+    assert cap["json"]["max_tokens"] == 1
+
+    _patch_post(monkeypatch, status=401)
+    assert verify_provider_key("atlascloud", api_key="bad") == {
+        "ok": False,
+        "error": "Invalid API key.",
+    }
+
+
 def test_verify_network_error_is_clean(monkeypatch):
     _patch_get(monkeypatch, raise_exc=ConnectionError("boom"))
     res = verify_provider_key("openai", api_key="sk-x")