# CEL Client

Accessed via `client.CEL()` on the [Hatchet client](../client).

## CELClient

CELClient provides methods for evaluating CEL expressions

### Functions

#### `Debug`

Debug evaluates a CEL expression with the provided input, filter payload, and optional metadata. Useful for testing and validating CEL expressions and debugging issues in production.

```go
func (c *CELClient) Debug(ctx context.Context, expression string, input map[string]any, additionalMetadata, filterPayload *map[string]any) (*rest.V1CELDebugResponse, error)
```

Parameters:

Name, Type

`ctx`, `context.Context`
`expression`, `string`
`input`, `map[string]any`
`additionalMetadata`, `*map[string]any`
`filterPayload`, `*map[string]any`

Returns:

Type

`*rest.V1CELDebugResponse`
`error`