Fireworks user agent (#80422)

plugins/model-providers/fireworks/__init__.py

@@ -9,6 +9,7 @@ Model IDs here track the canonical Fireworks catalog (fw-ai/fireconnect
 ``setup-cli``).
 """
 
+from hermes_cli import __version__ as _HERMES_VERSION
 from providers import register_provider
 from providers.base import ProviderProfile
 
@@ -22,6 +23,9 @@ fireworks = ProviderProfile(
     env_vars=("FIREWORKS_API_KEY",),
     base_url="https://api.fireworks.ai/inference/v1",
     auth_type="api_key",
+    # Identifies the client, replacing the OpenAI SDK's own User-Agent. This is
+    # not partner attribution — HTTP-Referer/X-Title stay off (#61182).
+    default_headers={"User-Agent": f"HermesAgent/{_HERMES_VERSION}"},
     # Auxiliary model for cheap tasks (compaction, title generation, vision).
     # A standard pay-as-you-go catalog ``/models/`` ID.
     default_aux_model="accounts/fireworks/models/glm-5p2",

tests/hermes_cli/test_fireworks_provider.py

@@ -164,6 +164,14 @@ class TestFireworksAuxiliary:
         assert "X-Title" not in headers
         assert kwargs["base_url"] == "https://api.fireworks.ai/inference/v1"
 
+    def test_client_sends_hermes_user_agent(self, monkeypatch):
+        """The profile's User-Agent survives the generic default_headers
+        fallback and reaches OpenAI client construction."""
+        monkeypatch.setenv("FIREWORKS_API_KEY", "fw_test_key")
+        _client, _model, kwargs = self._resolve("fireworks")
+        headers = kwargs.get("default_headers", {})
+        assert headers["User-Agent"].startswith("HermesAgent/")
+
 
 class TestFireworksModelMetadata:
     def test_url_infers_fireworks(self):

tests/plugins/model_providers/test_fireworks_profile.py

@@ -44,6 +44,10 @@ class TestFireworksHeaders:
         assert "HTTP-Referer" not in fireworks_profile.default_headers
         assert "X-Title" not in fireworks_profile.default_headers
 
+    def test_user_agent_identifies_hermes(self, fireworks_profile):
+        # Prefix, not the full string — the version moves every release.
+        assert fireworks_profile.default_headers["User-Agent"].startswith("HermesAgent/")
+
 
 class TestFireworksAliases:
     @pytest.mark.parametrize("alias", ["fireworks-ai", "fw"])