> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://docs.nvidia.com/nemo/gym/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://docs.nvidia.com/nemo/gym/_mcp/server.

# nemo_gym.harness_capabilities.contracts

Native evidence paths and their authoritative Gym models.

Validate retained JSON strictly before applying the stronger TE semantics. Missing
collections are handled by the capability checks and explicit applicability.

## Module Contents

### Functions

| Name                                                                    | Description                                                          |
| ----------------------------------------------------------------------- | -------------------------------------------------------------------- |
| [`model_errors`](#nemo_gym-harness_capabilities-contracts-model_errors) | Yield JSON pointers and error codes without copying source payloads. |

### Data

[`PATH_MODELS`](#nemo_gym-harness_capabilities-contracts-PATH_MODELS)

[`SCHEMA_VERSION`](#nemo_gym-harness_capabilities-contracts-SCHEMA_VERSION)

[`TOKEN_FIELDS`](#nemo_gym-harness_capabilities-contracts-TOKEN_FIELDS)

### API

```python
nemo_gym.harness_capabilities.contracts.model_errors(
    record: dict
) -> collections.abc.Iterator[tuple[str, str]]
```

Yield JSON pointers and error codes without copying source payloads.

```python
nemo_gym.harness_capabilities.contracts.PATH_MODELS = {'ng_model_call_capture.calls': TypeAdapter(list[ModelCallRecord]), 'ng_trajecto...
```

```python
nemo_gym.harness_capabilities.contracts.SCHEMA_VERSION = 'gym-p0-evidence/v2'
```

```python
nemo_gym.harness_capabilities.contracts.TOKEN_FIELDS = ('tokens_in', 'tokens_out', 'tokens_reasoning', 'tokens_total', 'cached_tokens')
```