# Checkpoint

> **Class** in `langgraph.checkpoint`

📖 [View in docs](https://reference.langchain.com/python/langgraph.checkpoint/base/Checkpoint)

State snapshot at a given point in time.

## Signature

```python
Checkpoint()
```

## Extends

- `TypedDict`

## Constructors

```python
__init__(
    v: int,
    id: str,
    ts: str,
    channel_values: dict[str, Any],
    channel_versions: ChannelVersions,
    versions_seen: dict[str, ChannelVersions],
    updated_channels: list[str] | None,
)
```

| Name | Type |
|------|------|
| `v` | `int` |
| `id` | `str` |
| `ts` | `str` |
| `channel_values` | `dict[str, Any]` |
| `channel_versions` | `ChannelVersions` |
| `versions_seen` | `dict[str, ChannelVersions]` |
| `updated_channels` | `list[str] \| None` |


## Properties

- `v`
- `id`
- `ts`
- `channel_values`
- `channel_versions`
- `versions_seen`
- `updated_channels`

---

[View source on GitHub](https://github.com/langchain-ai/langgraph/blob/aa322c13cd5f16a3f6254a931a4104e412cd687c/libs/checkpoint/langgraph/checkpoint/base/__init__.py#L92)