> ## Documentation Index
> Fetch the complete documentation index at: https://docs.markifact.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Update Campaign Bidding Strategy

> Updates the bidding strategy of a Meta Ads campaign

Updates the bidding strategy of a Meta Ads campaign. For COST\_CAP and LOWEST\_COST\_WITH\_BID\_CAP, `adset_bid_amount` is provided as an actual dollar value, NOT in cents (e.g. pass 10 for $10). Do not multiply by 100. `adset_roas_floor` (for LOWEST_COST_WITH_MIN_ROAS) is a plain decimal multiplier (e.g. 1.23 = 123% ROAS), not a currency value. IMPORTANT: `bid_amount` returned by meta_ads_get_adset_settings is raw from Meta in minor units (cents for USD, e.g. 1000 = $10) — divide by 100 before passing here.

|                       |                                             |
| --------------------- | ------------------------------------------- |
| **App**               | Meta Ads                                    |
| **Operation ID**      | `meta_ads_update_campaign_bidding_strategy` |
| **Type**              | Action                                      |
| **Connection**        | `meta_ads` (required)                       |
| **Credits per run**   | 1                                           |
| **Agent / MCP tool**  | Yes                                         |
| **Requires approval** | Yes (write operation)                       |

## Inputs

| Field              | Type                       | Required | Default | Description                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |
| ------------------ | -------------------------- | -------- | ------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| `account`          | DynamicAccount             | Yes      | -       | Select Meta Ads account to update campaigns in, ask the user for it if not provided                                                                                                                                                                                                                                                                                                                                                                                                                         |
| `campaign_id`      | string or SelectItem       | Yes      | -       | Select the campaign to update, ask the user for it if not provided                                                                                                                                                                                                                                                                                                                                                                                                                                          |
| `bid_strategy`     | string or SelectableOption | Yes      | -       | Select the campaign bidding strategy. Available options: 'LOWEST\_COST\_WITHOUT\_CAP' (Highest volume), 'COST\_CAP' (Cost per result goal), 'LOWEST\_COST\_WITH\_MIN\_ROAS' (ROAS goal), 'LOWEST\_COST\_WITH\_BID\_CAP' (Bid cap)                                                                                                                                                                                                                                                                           |
| `adset_bid_amount` | number                     | No       | -       | Ad set bid amount as an actual dollar value in the account currency, NOT in cents (e.g. pass 10 for $10). Do not multiply by 100. Required for COST_CAP and LOWEST_COST_WITH_BID_CAP. The same amount will be applied to all ad sets in the selected campaign before the campaign bidding strategy is updated. IMPORTANT: `bid_amount` returned by meta_ads_get_adset_settings is raw from Meta in the account's minor currency units (cents for USD, e.g. 1000 = $10) — divide by 100 before passing here. |
| `adset_roas_floor` | number                     | No       | -       | Minimum ROAS as a decimal multiplier (e.g. 1.23 for 123%). Required for LOWEST\_COST\_WITH\_MIN\_ROAS. The same value will be applied to all ad sets in the selected campaign.                                                                                                                                                                                                                                                                                                                              |

### SelectItem

| Field   | Type   | Required | Default | Description                                                                                          |
| ------- | ------ | -------- | ------- | ---------------------------------------------------------------------------------------------------- |
| `value` | string | Yes      | -       | The value of the selectable item.                                                                    |
| `label` | string | Yes      | -       | The label of the selectable item, used for display purposes. If not provided, defaults to the value. |

### SelectableOption

| Field   | Type   | Required | Default | Description |
| ------- | ------ | -------- | ------- | ----------- |
| `value` | string | Yes      | -       |             |
| `label` | string | Yes      | -       |             |

## Output

**Type**: `str`

Returns success message confirming campaign bidding strategy update.