## Compact an objective

`client.Objectives.Compact(ctx, objectiveID, body) (*ObjectiveCompactResponse, error)`

**post** `/v1/objectives/{objectiveId}/compact`

Triggers compaction on a running objective. Optionally override the variation's compaction config.

### Parameters

- `objectiveID string`

- `body ObjectiveCompactParams`

  - `CompactionConfig param.Field[AgentVariationSpecCompactionConfig]`

    CompactionConfig defines how context window compaction behaves for objectives using this variation.

### Returns

- `type ObjectiveCompactResponse struct{…}`

  Compact objective response

  - `ContextWindow ObjectiveContextWindowData`

    The new context window created by the compaction

    - `CompletionTokens int64`

      A calculated value for how many completion tokens (output tokens) have been used in this context window

    - `ObjectiveID string`

      The objective's ID that this window belongs to

    - `PreviousWindowContinueInstructions string`

      The instructions for this window to continue from a previous window's chat history.

    - `PromptTokens int64`

      A calculated value for how many prompt tokens (input tokens) have been used in this context window

    - `Sequence int64`

      sequence is a numeric representation of which context window this is. Sequences are useful to perform a max(sequence) on in order
      to calculate how many context windows an objective has.

### Example

```go
package main

import (
  "context"
  "fmt"

  "github.com/cadenya/cadenya-go"
  "github.com/cadenya/cadenya-go/option"
)

func main() {
  client := cadenya.NewClient(
    option.WithAPIKey("My API Key"),
  )
  response, err := client.Objectives.Compact(
    context.TODO(),
    "objectiveId",
    cadenya.ObjectiveCompactParams{

    },
  )
  if err != nil {
    panic(err.Error())
  }
  fmt.Printf("%+v\n", response.ContextWindow)
}
```

#### Response

```json
{
  "contextWindow": {
    "completionTokens": 0,
    "objectiveId": "objectiveId",
    "previousWindowContinueInstructions": "previousWindowContinueInstructions",
    "promptTokens": 0,
    "sequence": 0
  }
}
```