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fix: reject a fallback model on a different tool-schema route

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This commit is contained in:
Alex Schapiro 2026-08-10 15:41:23 +00:00
parent 2c5d4a166b
commit 9ddb2b0bb6
1 changed files with 10 additions and 0 deletions
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10
strix/core/runner.py
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@ -176,6 +176,16 @@ async def run_strix_scan(
coordinator = AgentCoordinator() coordinator = AgentCoordinator()
coordinator.set_snapshot_path(agents_path) coordinator.set_snapshot_path(agents_path)
fallback_model = settings.llm.fallback_model fallback_model = settings.llm.fallback_model
if fallback_model and (
uses_chat_completions_tool_schema(fallback_model, settings) != chat_completions_tools
):
# Agents build their tool set once, for the primary model's schema. A
# fallback on the other SDK route would reject every replayed turn, so
# it can never recover a denied agent — fail fast instead.
raise RuntimeError(
f"STRIX_LLM_FALLBACK '{fallback_model}' uses a different tool schema than "
f"'{resolved_model}'. Pick a fallback from the same provider family."
)
coordinator.configure_denial_fallback( coordinator.configure_denial_fallback(
fallback_model, fallback_model,
settings.llm.denied_retries, settings.llm.denied_retries,