> ## 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 the amount in the account currency exactly as shown in Ads Manager (e.g. 10 for \$10, 15000 for COP 15,000); the backend applies Meta's currency offset, never multiply yourself. `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 Meta minor units — divide by that row's `currency_offset` (100 for most currencies, 1 for CLP, COP, CRC, HUF, ISK, IDR, JPY, KRW, PYG, TWD, VND) 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 in the account currency exactly as shown in Ads Manager (e.g. 10 for \$10, 15000 for COP 15,000); the backend applies Meta's currency offset, never multiply yourself. 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 Meta minor units — divide by that row's `currency_offset` (100 for most currencies, 1 for CLP, COP, CRC, HUF, ISK, IDR, JPY, KRW, PYG, TWD, VND) 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.


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