fix:Update GenericTTS documentation and implementation to specify HTTP(S) support. Adjusted parameter requirements and added validation for URL format. Updated tests to reflect changes in vendor classification and serialization.

Author: seymourtang

docs/concepts/vendors.md

@@ -66,7 +66,7 @@ Used with `agent.with_tts()`. Each TTS vendor produces audio at a specific sampl
 | `FishAudioTTS` | Fish Audio | `key`, `reference_id`, `backend` | — |
 | `MurfTTS` | Murf | `key`, `voice_id`, `model` | — |
 | `MiniMaxTTS` | MiniMax | `model` for supported Agora-managed global models; `key`, `group_id`, `model`, `voice_id`, `url` for BYOK | — |
-| `GenericTTS` | Generic OpenAI-compatible TTS | `url`, `headers`, `model`, `voice` | Configurable |
+| `GenericTTS` | Generic OpenAI-compatible TTS over HTTP(S) | `url` | Configurable |
 | `DeepgramTTS` | Deepgram | `api_key`, `model` | Configurable |
 | `SarvamTTS` | Sarvam | `api_key` | — |
 | `XaiTTS` | xAI | `api_key`, `language` | Configurable |
@@ -84,7 +84,7 @@ Used with `agent.with_tts()` when routing to `Area.CN`. Use `MiniMaxCNTTS` and `
 | `CosyVoiceTTS` | CosyVoice | `api_key`, `model`, `voice` | — |
 | `BytedanceDuplexTTS` | ByteDance Duplex | `app_id`, `token`, `resource_id`, `speaker` | — |
 | `StepFunTTS` | StepFun | `api_key`, `model`, `voice_id` | — |
-| `GenericTTS` | Generic OpenAI-compatible TTS | `url`, `headers`, `model`, `voice` | Configurable |
+| `GenericTTS` | Generic OpenAI-compatible TTS over HTTP(S) | `url` | Configurable |
 
 <!-- snippet: executable -->
 ```python

docs/reference/vendors.md

@@ -387,12 +387,14 @@ The SDK also includes named helpers for the remaining Agora-supported LLM provid
 
 ### `GenericTTS`
 
+`GenericTTS` currently supports HTTP and HTTPS endpoints. WebSocket endpoints are rejected until a WebSocket-backed generic TTS implementation is available. AgentKit serializes the current HTTP implementation with the internal vendor value `generic_http`.
+
 | Parameter | Type | Required | Default | Description |
 |---|---|---|---|---|
-| `url` | `str` | Yes | — | Callback address of the generic TTS service |
-| `headers` | `Dict[str, str]` | Yes | — | Custom headers to include in requests to the generic TTS service |
-| `model` | `str` | Yes | — | TTS model name |
-| `voice` | `str` | Yes | — | Voice name |
+| `url` | `str` | Yes | — | HTTP(S) endpoint of the generic TTS service |
+| `headers` | `Dict[str, str]` | No | `None` | Custom headers to include in requests to the generic TTS service |
+| `model` | `str` | No | `None` | TTS model name |
+| `voice` | `str` | No | `None` | Voice name |
 | `api_key` | `str` | No | `None` | API key for the generic TTS service |
 | `speed` | `float` | No | `None` | Speech rate |
 | `sample_rate` | `int` | No | `None` | Output audio sample rate in Hz |

src/agora_agent/agentkit/vendors/tts.py

@@ -1,6 +1,7 @@
 from typing import Any, Dict, List, Optional
+from urllib.parse import urlsplit
 
-from pydantic import ConfigDict, Field, model_validator
+from pydantic import ConfigDict, Field, field_validator, model_validator
 
 from .base import BaseTTS, CartesiaSampleRate, ElevenLabsSampleRate, GoogleTTSSampleRate, MicrosoftSampleRate
 from ..presets import MiniMaxPresetModels, OpenAITtsPresetModels
@@ -63,9 +64,9 @@ class MicrosoftTTS(BaseTTS):
     def to_config(self) -> Dict[str, Any]:
         params: Dict[str, Any] = dict(self.additional_params or {})
         params.update({
-            "key": self.key,
-            "region": self.region,
-            "voice_name": self.voice_name,
+                "key": self.key,
+                "region": self.region,
+                "voice_name": self.voice_name,
         })
 
         if self.sample_rate is not None:
@@ -241,8 +242,8 @@ class DeepgramTTS(BaseTTS):
     def to_config(self) -> Dict[str, Any]:
         params: Dict[str, Any] = dict(self.additional_params or {})
         params.update({
-            "api_key": self.api_key,
-            "model": self.model,
+                "api_key": self.api_key,
+                "model": self.model,
         })
 
         if self.base_url is not None:
@@ -516,10 +517,10 @@ def to_config(self) -> Dict[str, Any]:
 class GenericTTS(BaseTTS):
     model_config = ConfigDict(extra="forbid")
 
-    url: str = Field(..., description="Callback address of the generic TTS service")
-    headers: Dict[str, str] = Field(..., description="Custom headers to include in requests to the generic TTS service")
-    model: str = Field(..., description="TTS model name")
-    voice: str = Field(..., description="Voice name")
+    url: str = Field(..., description="HTTP(S) endpoint of the generic TTS service")
+    headers: Optional[Dict[str, str]] = Field(default=None, description="Custom request headers")
+    model: Optional[str] = Field(default=None, description="TTS model name")
+    voice: Optional[str] = Field(default=None, description="Voice name")
     api_key: Optional[str] = Field(default=None, description="API key for the generic TTS service")
     speed: Optional[float] = Field(default=None, description="Speech rate")
     sample_rate: Optional[int] = Field(default=None, description="Output audio sample rate in Hz")
@@ -528,12 +529,22 @@ class GenericTTS(BaseTTS):
     additional_params: Optional[Dict[str, Any]] = Field(default=None, description="Additional generic TTS params")
     skip_patterns: Optional[List[int]] = Field(default=None)
 
+    @field_validator("url")
+    @classmethod
+    def validate_url(cls, value: str) -> str:
+        parsed = urlsplit(value)
+        if parsed.scheme.lower() not in {"http", "https"} or not parsed.netloc:
+            raise ValueError("GenericTTS url must be a valid HTTP(S) endpoint")
+        return value
+
     def to_config(self) -> Dict[str, Any]:
         params: Dict[str, Any] = dict(self.additional_params or {})
         if self.api_key is not None:
             params["api_key"] = self.api_key
-        params["model"] = self.model
-        params["voice"] = self.voice
+        if self.model is not None:
+            params["model"] = self.model
+        if self.voice is not None:
+            params["voice"] = self.voice
         if self.speed is not None:
             params["speed"] = self.speed
         if self.sample_rate is not None:
@@ -544,11 +555,12 @@ def to_config(self) -> Dict[str, Any]:
             params["instruction"] = self.instruction
 
         result: Dict[str, Any] = {
-            "vendor": "generic",
+            "vendor": "generic_http",
             "url": self.url,
-            "headers": self.headers,
             "params": params,
         }
+        if self.headers is not None:
+            result["headers"] = self.headers
         if self.skip_patterns is not None:
             result["skip_patterns"] = self.skip_patterns
         return result

tests/custom/test_agentkit_vendors.py

@@ -42,7 +42,6 @@ def test_xai_grok_emits_params_even_when_empty():
     assert XaiGrok(api_key="xai-key").to_config()["params"] == {}
 
 
-
 def test_mllm_rejects_fields_not_in_core_contract():
     with pytest.raises(ValidationError):
         OpenAIRealtime(api_key="openai-key", predefined_tools=["_publish_message"])
@@ -224,7 +223,7 @@ def test_generic_tts_serializes() -> None:
     ).to_config()
 
     assert config == {
-        "vendor": "generic",
+        "vendor": "generic_http",
         "url": "https://tts.example.com/v1/audio",
         "headers": {"Authorization": "Bearer token"},
         "params": {
@@ -239,6 +238,28 @@ def test_generic_tts_serializes() -> None:
     }
 
 
+def test_generic_tts_only_requires_url() -> None:
+    assert GenericTTS(url="https://tts.example.com/v1/audio").to_config() == {
+        "vendor": "generic_http",
+        "url": "https://tts.example.com/v1/audio",
+        "params": {},
+    }
+
+
+@pytest.mark.parametrize(
+    "url",
+    [
+        "ws://tts.example.com/v1/audio",
+        "wss://tts.example.com/v1/audio",
+        "not-a-url",
+        "https:///missing-host",
+    ],
+)
+def test_generic_tts_rejects_non_http_urls(url: str) -> None:
+    with pytest.raises(ValidationError, match="valid HTTP"):
+        GenericTTS(url=url)
+
+
 def test_xai_tts_serializes() -> None:
     config = XaiTTS(
         api_key="xai-tts-key",

tests/custom/test_regional_vendors.py

@@ -168,8 +168,8 @@ def test_generic_tts_is_classified_as_shared_vendor() -> None:
 
     assert cn_agent.__class__.__name__ == "CNAgent"
     assert global_agent.__class__.__name__ == "GlobalAgent"
-    assert cn_agent.tts is not None and cn_agent.tts["vendor"] == "generic"
-    assert global_agent.tts is not None and global_agent.tts["vendor"] == "generic"
+    assert cn_agent.tts is not None and cn_agent.tts["vendor"] == "generic_http"
+    assert global_agent.tts is not None and global_agent.tts["vendor"] == "generic_http"
 
 
 def test_xai_asr_and_tts_are_classified_as_global_vendors() -> None: