Incomplete: feat: add GLM/alternative API support via environment variables

[schniggie]

feat: add GLM/alternative API support via environment variables

Seems you need to adjust more code, with all the ANTHROPIC_ env vars set, set coder still uses the model: claude-opus-4-5-20251101. Here my .env:

NTHROPIC_BASE_URL=https://api.synthetic.new/anthropic  # What server to talk to instead of the default
ANTHROPIC_AUTH_TOKEN=syn_xyz # Auth key

# Model configuration
ANTHROPIC_DEFAULT_OPUS_MODEL=hf:MiniMaxAI/MiniMax-M2.1  # The model to use for opus plan mode
ANTHROPIC_DEFAULT_SONNET_MODEL=hf:MiniMaxAI/MiniMax-M2.1  # The model to use for most tasks
ANTHROPIC_DEFAULT_HAIKU_MODEL=hf:MiniMaxAI/MiniMax-M2.1  # Primarily used for summarization

And in the chat interface, I see the error: API Error: 400 {"error":"Your model name should start with an hf: prefix; for example: \"hf:claude-opus-4-5-20251101\""}

Great project, really like the nice retro ui interface :)

[simfor99]

Bug Fix: Hardcoded model in chat session services

The issue is that the model is hardcoded in three files, ignoring the ANTHROPIC_DEFAULT_OPUS_MODEL environment variable:

Affected files:

1. server/services/expand_chat_session.py:174
2. server/services/spec_chat_session.py:175
3. server/services/assistant_chat_session.py:261

All three have:

model="claude-opus-4-5-20251101",  # Hardcoded!

Fix:

In each file, add these lines before the ClaudeSDKClient instantiation:

# Determine model from environment or use default
# This allows using alternative APIs (e.g., GLM via z.ai) that may not support Claude model names
model = os.getenv("ANTHROPIC_DEFAULT_OPUS_MODEL", "claude-opus-4-5-20251101")

And change:

model="claude-opus-4-5-20251101",

to:

model=model,

Full diff for expand_chat_session.py:

         # Build environment overrides for API configuration
         sdk_env = {var: os.getenv(var) for var in API_ENV_VARS if os.getenv(var)}
 
+        # Determine model from environment or use default
+        # This allows using alternative APIs (e.g., GLM via z.ai) that may not support Claude model names
+        model = os.getenv("ANTHROPIC_DEFAULT_OPUS_MODEL", "claude-opus-4-5-20251101")
+
         # Create Claude SDK client
         try:
             self.client = ClaudeSDKClient(
                 options=ClaudeAgentOptions(
-                    model="claude-opus-4-5-20251101",
+                    model=model,

Apply the same pattern to spec_chat_session.py and assistant_chat_session.py.

This ensures the env var overrides work correctly for alternative API providers.