feat: add complete OpenCode Go support

src/tau_ai/anthropic.py

@@ -47,6 +47,7 @@
 from tau_ai.events import AssistantMessageEvent
 from tau_ai.http import create_async_client
 from tau_ai.http_errors import provider_http_error_message
+from tau_ai.openai_compatible import _apply_session_affinity_headers
 from tau_ai.provider import CancellationToken
 from tau_ai.retry import (
     RETRYABLE_TRANSPORT_ERRORS,
@@ -105,9 +106,13 @@ def stream_response(
         session_id: str | None = None,
     ) -> AsyncIterator[AssistantMessageEvent]:
         """Stream one response as Pi-compatible assistant message events."""
-        del session_id
         raw = self._stream_provider_events(
-            model=model, system=system, messages=messages, tools=tools, signal=signal
+            model=model,
+            system=system,
+            messages=messages,
+            tools=tools,
+            signal=signal,
+            session_id=session_id,
         )
         return canonicalize_provider_stream(
             raw, api="anthropic-messages", provider="anthropic", model=model
@@ -121,6 +126,7 @@ def _stream_provider_events(
         messages: list[AgentMessage],
         tools: list[AgentTool],
         signal: CancellationToken | None = None,
+        session_id: str | None = None,
     ) -> AsyncIterator[ProviderEvent]:
         """Stream one Anthropic response as provider-neutral events."""
 
@@ -167,6 +173,7 @@ async def iterator() -> AsyncIterator[ProviderEvent]:
                 headers.setdefault("Authorization", f"Bearer {api_key}")
             else:
                 headers["x-api-key"] = api_key
+            _apply_session_affinity_headers(headers, session_id, self._session_affinity_format())
             url = f"{base_url.rstrip('/')}/messages"
 
             attempt = 0
@@ -384,6 +391,13 @@ def _should_retry(self, attempt: int, *, status_code: int | None = None) -> bool
             return False
         return status_code is None or status_code in {408, 409, 425, 429} or status_code >= 500
 
+    def _session_affinity_format(self) -> str | None:
+        compat = self._config.compat or {}
+        if compat.get("sendSessionAffinityHeaders") is not True:
+            return None
+        value = compat.get("sessionAffinityFormat")
+        return value if isinstance(value, str) and value else None
+
 
 _TRANSIENT_ANTHROPIC_STREAM_ERROR_TYPES = frozenset(
     {

src/tau_ai/env.py

@@ -73,6 +73,7 @@ class AnthropicConfig:
     bearer_auth: bool = False
     base_url: str = DEFAULT_ANTHROPIC_BASE_URL
     headers: Mapping[str, str] | None = None
+    compat: Mapping[str, JSONValue] = field(default_factory=dict)
     timeout_seconds: float = DEFAULT_OPENAI_COMPATIBLE_TIMEOUT_SECONDS
     max_retries: int = DEFAULT_OPENAI_COMPATIBLE_MAX_RETRIES
     max_retry_delay_seconds: float = DEFAULT_OPENAI_COMPATIBLE_MAX_RETRY_DELAY_SECONDS

src/tau_ai/openai_compatible.py

@@ -433,6 +433,9 @@ def _apply_session_affinity_headers(
     if affinity_format == "openrouter":
         headers["x-session-id"] = session_id
         return
+    if affinity_format == "opencode":
+        headers["x-opencode-session"] = session_id
+        return
     if affinity_format == "openai":
         headers["session_id"] = session_id
 

src/tau_coding/catalog_loader.py

@@ -100,6 +100,7 @@ class _CatalogProvider(BaseModel):
     default_model: _NonEmptyString
     docs_url: _NonEmptyString
     api: ProviderApi | None = None
+    anthropic_auth: _NonEmptyString | None = None
     context_windows: dict[_NonEmptyString, _PositiveInt] | None = None
     headers: dict[_NonEmptyString, _NonEmptyString] = {}
     compat: dict[_NonEmptyString, Any] = {}
@@ -470,6 +471,7 @@ def _entry_from_provider(provider: _CatalogProvider, *, source: str) -> Provider
         default_model=provider.default_model,
         docs_url=provider.docs_url,
         api=provider.api,
+        anthropic_auth=provider.anthropic_auth,
         context_windows=context_windows or None,
         headers=dict(provider.headers),
         compat=_json_object(provider.compat, f"{prefix}.compat"),

src/tau_coding/data/catalog.toml

@@ -6590,68 +6590,129 @@ kind = "openai-compatible"
 base_url = "https://opencode.ai/zen/go/v1"
 api_key_env = "OPENCODE_API_KEY"
 credential_name = "opencode-go"
-models = ["deepseek-v4-flash", "deepseek-v4-pro", "glm-5.1", "glm-5.2", "kimi-k2.6", "kimi-k2.7-code", "mimo-v2.5", "mimo-v2.5-pro", "minimax-m2.7", "minimax-m3", "qwen3.6-plus", "qwen3.7-max", "qwen3.7-plus"]
+models = ["deepseek-v4-flash", "deepseek-v4-flash-vision-exp", "deepseek-v4-pro", "deepseek-v4.1-flash", "glm-5.2", "glm-5.3", "glm-5.3-flash", "gpt-5.6-luna", "gpt-6-luna", "grok-4.6", "grok-4.7", "hy3", "hy4-preview", "kimi-k2.6", "kimi-k2.7-code", "kimi-k3", "longcat-2.0", "longcat-2.5-preview-free", "mimo-v2.5", "mimo-v2.5-pro", "mimo-v2.6-flash", "mimo-v2.6-pro", "minimax-m2.7", "minimax-m3", "muse-spark-1.2-contributor", "muse-spark-1.3-contributor", "qwen3.7-plus", "qwen3.8-flash", "qwen3.8-max", "space-bunny"]
 default_model = "kimi-k2.7-code"
 docs_url = "https://opencode.ai/docs/go"
 api = "openai-completions"
+anthropic_auth = "api-key"
+compat = { sendSessionAffinityHeaders = true, sessionAffinityFormat = "opencode" }
 thinking_levels = ["off", "minimal", "low", "medium", "high", "xhigh"]
 thinking_default = "medium"
 thinking_parameter = "reasoning_effort"
 
 [providers.context_windows]
 "deepseek-v4-flash" = 1000000
 "deepseek-v4-pro" = 1000000
-"glm-5.1" = 202752
 "glm-5.2" = 202752
 "kimi-k2.6" = 262144
 "kimi-k2.7-code" = 262144
 "mimo-v2.5" = 262144
 "mimo-v2.5-pro" = 262144
 "minimax-m2.7" = 204800
 "minimax-m3" = 204800
-"qwen3.6-plus" = 1000000
-"qwen3.7-max" = 1000000
 "qwen3.7-plus" = 1000000
 
 [providers.model_metadata."deepseek-v4-flash"]
 input = ["text"]
 
+[providers.model_metadata."deepseek-v4-flash-vision-exp"]
+input = ["text", "image"]
+
 [providers.model_metadata."deepseek-v4-pro"]
 input = ["text"]
 
-[providers.model_metadata."glm-5.1"]
+[providers.model_metadata."deepseek-v4.1-flash"]
 input = ["text"]
 
 [providers.model_metadata."glm-5.2"]
 input = ["text"]
 
+[providers.model_metadata."glm-5.3"]
+input = ["text"]
+
+[providers.model_metadata."glm-5.3-flash"]
+input = ["text"]
+
+[providers.model_metadata."gpt-5.6-luna"]
+api = "openai-responses"
+input = ["text", "image"]
+
+[providers.model_metadata."gpt-6-luna"]
+api = "openai-responses"
+input = ["text", "image"]
+
+[providers.model_metadata."grok-4.6"]
+api = "openai-responses"
+input = ["text", "image"]
+
+[providers.model_metadata."grok-4.7"]
+api = "openai-responses"
+input = ["text", "image"]
+
+[providers.model_metadata."hy3"]
+input = ["text"]
+
+[providers.model_metadata."hy4-preview"]
+input = ["text"]
+
 [providers.model_metadata."kimi-k2.6"]
 input = ["text", "image"]
 
 [providers.model_metadata."kimi-k2.7-code"]
 input = ["text", "image"]
 
+[providers.model_metadata."kimi-k3"]
+input = ["text", "image"]
+
+[providers.model_metadata."longcat-2.0"]
+input = ["text"]
+
+[providers.model_metadata."longcat-2.5-preview-free"]
+input = ["text"]
+
 [providers.model_metadata."mimo-v2.5"]
 input = ["text", "image"]
 
 [providers.model_metadata."mimo-v2.5-pro"]
 input = ["text"]
 
+[providers.model_metadata."mimo-v2.6-flash"]
+input = ["text", "image"]
+
+[providers.model_metadata."mimo-v2.6-pro"]
+input = ["text"]
+
 [providers.model_metadata."minimax-m2.7"]
+api = "anthropic-messages"
 input = ["text"]
 
 [providers.model_metadata."minimax-m3"]
+api = "anthropic-messages"
 input = ["text", "image"]
 
-[providers.model_metadata."qwen3.6-plus"]
-input = ["text", "image"]
+[providers.model_metadata."muse-spark-1.2-contributor"]
+api = "openai-responses"
+input = ["text"]
 
-[providers.model_metadata."qwen3.7-max"]
+[providers.model_metadata."muse-spark-1.3-contributor"]
+api = "openai-responses"
 input = ["text"]
 
 [providers.model_metadata."qwen3.7-plus"]
+api = "anthropic-messages"
+input = ["text", "image"]
+
+[providers.model_metadata."qwen3.8-flash"]
+api = "anthropic-messages"
+input = ["text", "image"]
+
+[providers.model_metadata."qwen3.8-max"]
+api = "anthropic-messages"
 input = ["text", "image"]
 
+[providers.model_metadata."space-bunny"]
+input = ["text"]
+
 [[providers]]
 name = "opencode"
 display_name = "OpenCode Zen"