> For the complete documentation index, see [llms.txt](https://docs.mozilla.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.mozilla.ai/any-guardrail/api-reference/index/content-safety/poly-guard.md).

# PolyGuard

Multilingual safety-moderation judge reporting request harm, response harm, and refusal across 17 languages.

Generative classifier (fine-tuned Ministral / Qwen decoder LLMs) that, given a human request and an optional assistant response, reports three boolean signals — whether the request is harmful, whether the response is a refusal, and whether the response is harmful — plus the MLCommons hazard categories (`S1` ... `S14`) violated. Trained for moderation across 17 languages.

Verdict mapping onto `GuardrailOutput`:

* `valid` is `False` when the request or the response is judged harmful.
* `categories` carries the three boolean signals (`harmful_request`, `harmful_response`, `response_refusal`) plus one `CategoryResult` per violated hazard code (`name` = `Sx`, `description` = the taxonomy label, `triggered=True`), deduplicated in order of appearance.
* `explanation` is the raw generation.
* `usage` carries the prompt / completion token counts. No canonical `score` or `spans` are produced.
* Fails closed (`valid=False` with `extra={"parse_failure": True}`) when neither harmfulness field parses.

Expected inputs: a single `input_text` string (the human request) plus an optional `output_text` string (the assistant response). The prompt template always carries both slots, so `output_text` defaults to an empty response when omitted; supply it to have the response judged for harm and refusal. Single strings only — passing a list raises `TypeError`.

For more information, see the model cards:

* [ToxicityPrompts/PolyGuard-Ministral](https://huggingface.co/ToxicityPrompts/PolyGuard-Ministral) (default).
* [ToxicityPrompts/PolyGuard-Qwen](https://huggingface.co/ToxicityPrompts/PolyGuard-Qwen).
* [ToxicityPrompts/PolyGuard-Qwen-Smol](https://huggingface.co/ToxicityPrompts/PolyGuard-Qwen-Smol).

## Supported Models

* `ToxicityPrompts/PolyGuard-Ministral`
* `ToxicityPrompts/PolyGuard-Qwen`
* `ToxicityPrompts/PolyGuard-Qwen-Smol`

## Constructor

| Parameter        | Type                                                 | Required | Default | Description                                                                                                                                                                                                                                                      |
| ---------------- | ---------------------------------------------------- | -------- | ------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| `model_id`       | \`str                                                | None\`   | No      | `None`                                                                                                                                                                                                                                                           |
| `provider`       | `Optional[Provider[dict[str, Any], dict[str, Any]]]` | No       | `None`  | Optional pre-configured provider. When `None`, a `HuggingFaceProvider` is built targeting a causal LM (`AutoModelForCausalLM` + `AutoTokenizer`). A supplied `HuggingFaceProvider` is corrected to those classes at load time; any other provider is used as-is. |
| `prompt`         | \`PromptTemplate                                     | None\`   | No      | `None`                                                                                                                                                                                                                                                           |
| `prompt_version` | \`str                                                | None\`   | No      | `None`                                                                                                                                                                                                                                                           |

Initialize the PolyGuard guardrail.

## validate

Classify `input_text` and, optionally, an assistant `output_text`.

**Parameters**

| Parameter     | Type  | Required | Default | Description                                        |
| ------------- | ----- | -------- | ------- | -------------------------------------------------- |
| `input_text`  | `str` | Yes      | —       | The human request to moderate. Single string only. |
| `output_text` | \`str | None\`   | No      | `None`                                             |

**Returns:** `GuardrailOutput`

## Benchmarks

### Content Safety

| Dataset (rev)                    | Metric | Threshold    | Value    | Harness                 | Source                           | Contam. |
| -------------------------------- | ------ | ------------ | -------- | ----------------------- | -------------------------------- | ------- |
| openai\_moderation (unspecified) | f1     | native-valid | 0.817276 | guardrail-bench+ag0.7.4 | measured:guardrail-bench+ag0.7.4 |         |
| xstest (unspecified)             | fpr    | native-valid | 0.016    | guardrail-bench+ag0.7.4 | measured:guardrail-bench+ag0.7.4 |         |
| wildguardmix (unspecified)       | f1     | native-valid | 0.965753 | guardrail-bench+ag0.7.4 | measured:guardrail-bench+ag0.7.4 |         |
| aegis (unspecified)              | f1     | native-valid | 0.855305 | guardrail-bench+ag0.7.4 | measured:guardrail-bench+ag0.7.4 |         |
| jbb (unspecified)                | f1     | native-valid | 0.760456 | guardrail-bench+ag0.7.4 | measured:guardrail-bench+ag0.7.4 |         |
| orbench (unspecified)            | fpr    | native-valid | 0.733333 | guardrail-bench+ag0.7.4 | measured:guardrail-bench+ag0.7.4 |         |

## License

* **Vendor:** ToxicityPrompts
* **Default license:** `mrl` (of the default model/service)

| Model variant                         | License      |
| ------------------------------------- | ------------ |
| `ToxicityPrompts/PolyGuard-Ministral` | `mrl`        |
| `ToxicityPrompts/PolyGuard-Qwen`      | `apache-2.0` |
| `ToxicityPrompts/PolyGuard-Qwen-Smol` | `apache-2.0` |


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