feat!: Full code can now be generated by an external model and shared with the AI tool (Claude Code / Codex etc)!

model definitions now support a new `allow_code_generation` flag, only to be used with higher reasoning models such as GPT-5-Pro and-Gemini 2.5-Pro

 When `true`, the `chat` tool can now request the external model to generate a full implementation / update / instructions etc and then share the implementation with the calling agent.

 This effectively allows us to utilize more powerful models such as GPT-5-Pro to generate code for us or entire implementations (which are either API-only or part of the $200 Pro plan from within the ChatGPT app)

tools/listmodels.py

@@ -140,6 +140,8 @@ class ListModelsTool(BaseTool):
             except AttributeError:
                 description = "No description available"
             lines = [header, f"  - {context_str}", f"  - {description}"]
+            if capabilities.allow_code_generation:
+                lines.append("  - Supports structured code generation")
             return lines
 
         # Check each native provider type
@@ -187,6 +189,8 @@ class ListModelsTool(BaseTool):
 
                         output_lines.append(f"- `{model_name}` - {context_str}")
                         output_lines.append(f"  - {description}")
+                        if capabilities.allow_code_generation:
+                            output_lines.append("  - Supports structured code generation")
 
                         for alias in capabilities.aliases or []:
                             if alias != model_name: