exo-explore/exo · error · HTTPException

Failed to fetch model: {exc}

Error message

Failed to fetch model: {exc}

What it means

Error "Failed to fetch model: {exc}" thrown in exo-explore/exo.

Source

Thrown at src/exo/api/main.py:1826

                    tasks=[task.value for task in card.tasks],
                    is_custom=card.is_custom,
                    family=card.family,
                    quantization=card.quantization,
                    base_model=card.base_model,
                    capabilities=card.capabilities,
                    reasoning_dialect=card.reasoning_dialect,
                    context_length=card.context_length,
                )
                for card in cards
            ]
        )

    async def add_custom_model(self, payload: AddCustomModelParams) -> ModelListModel:
        """Fetch a model from HuggingFace and save as a custom model card, then sync across the cluster."""
        try:
            card = await ModelCard.fetch_from_hf(payload.model_id)
        except Exception as exc:
            raise HTTPException(
                status_code=400, detail=f"Failed to fetch model: {exc}"
            ) from exc

        await self.command_sender.send(
            ForwarderCommand(
                origin=self._system_id,
                command=AddCustomModelCard(model_card=card),
            )
        )

        # Immediately update the local cache so the subsequent GET /models
        # returns the new model without waiting for the event round-trip.
        model_cards.card_cache.cc[card.model_id] = card

        return ModelListModel(
            id=card.model_id,
            hugging_face_id=card.model_id,
            name=card.model_id.short(),

View on GitHub (pinned to 21a54c5ea0)

When it happens

Trigger: Thrown at src/exo/api/main.py:1826 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of exo-explore/exo@21a54c5ea0 (2026-08-26). Data as JSON: /api/errors/eee061e7d4ae46b4. Report an issue: GitHub.