HKUDS/nanobot · error · ImageGenerationError

OpenRouter image generation failed: {detail}

Error message

OpenRouter image generation failed: {detail}

What it means

Error "OpenRouter image generation failed: {detail}" thrown in HKUDS/nanobot.

Source

Thrown at nanobot/providers/image_generation.py:424

            image_config["image_size"] = image_size
        if image_config:
            body["image_config"] = image_config
        body.update(self.extra_body)

        headers = {
            "Authorization": f"Bearer {self.api_key}",
            "Content-Type": "application/json",
            **_OPENROUTER_ATTRIBUTION_HEADERS,
            **self.extra_headers,
        }
        url = f"{self.api_base}/chat/completions"
        response = await self._http_post(url, headers=headers, body=body)

        try:
            response.raise_for_status()
        except httpx.HTTPStatusError as exc:
            detail = response.text[:500]
            raise ImageGenerationError(f"OpenRouter image generation failed: {detail}") from exc

        data = _as_json_object(response.json()) or {}
        images: list[str] = []
        text_parts: list[str] = []
        for choice in _as_json_objects(data.get("choices")):
            message = _as_json_object(choice.get("message")) or {}
            message_content = message.get("content")
            if isinstance(message_content, str):
                text_parts.append(message_content)
            for image in _as_json_objects(message.get("images")):
                image_url = _as_json_object(image.get("image_url") or image.get("imageUrl"))
                url_value = image_url.get("url") if image_url is not None else None
                if isinstance(url_value, str) and url_value.startswith("data:image/"):
                    images.append(url_value)

        self._require_images(images, data)

        return GeneratedImageResponse(

View on GitHub (pinned to 42f37dc4c0)

When it happens

Trigger: Thrown at nanobot/providers/image_generation.py:424 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of HKUDS/nanobot@42f37dc4c0 (2026-08-26). Data as JSON: /api/errors/25de5959ac4240e6. Report an issue: GitHub.